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FOUNDRY

SAND

TESTING

EQUIPMENT

CATALOGUE NO. 750

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ITEM DESCRIPTION PAGE No

Ref. No

No 42-CE Calibration Equipment 42No 44-CHT Core Hardness Tester 46No 28-CPT Core Permeability Tube 28No 14-DB Digital Balance 15No 27-EPM Electric Permmeter 27No 48-FHY Foundry Hydrometer 47No 41-GD Gas Determinator 43No 31-GCSM Green Compression Strength Machine 30No 42-GHT(B) Green Hardness Tester, B Scale 44No 43-GHT(C) Green Hardness Tester, C Scale 45No 49-HSTM High Strength Testing Machine (HSTM) 39No 51-TNSA(H) - Tensile Core Strength Accessory for HSTM 40No 52-TRSA(H) - Transverse Core Strength Accessory for HSTM 40No 46-IPT Impact Penetration Tester 46No 25-LCO Laboratory Core Baking Oven 24No 52-CTPB Laboratory Core Test Piece Blower 25No 9-LM Laboratory Mill 10No 10-LSM Laboratory Sand Mixer 11No 15-LSR (N) Laboratory Sand Rammer, Type N (LSR) 16No 17-CMT - Compactability Accessory for LSR 18

No 22-CGA - CO2 Gassing Accessories for LSR 21No 16-DEI - Density Indicator for LSR 17No 18-FLI - Flowability Indicator for LSR 17No 15-RB - Ramming Block for LSR 16No 21-SST - Split Specimen Tube for LSR 20

No 19-TNRA - Tensile Ramming Accessory for LSR 19No 20-TRRA - Transverse Ramming Accessory for LSR 19No 5-MBCT Methylene Blue Clay Tester 5No 12-MBL Moistbalance 13No 11-MTL Moisture Teller 12No 29-MPA Mould Permeability Accessory 28No 45-MST Mould Strength Tester 47No 26-MCB Multigang Core Boxes (Tensile & Transverse) 23No 50-PBT Peel Back Tester 41No 26-SPM Permeability Meter 26No 4-RSW Rapid Sand Washer 4No 3-SD Sample Dividers 3No 7-SSST Sand Specific Surface Tester 7

No 30-SIT Shatter Index Tester 29No 23-STNA Shell Mould Tensile Accessory 22No 24-STRA Shell Mould Transverse Accessory 22No 7-BMM Sieve Shaker (Octagon 2000 Digital) 8No 3-SSS Silica Sand Sampler 3No 14-SWS Sliding-Weight Scales 15No 13-SMT Speedy Moisture Tester 14No 8-STS Standard Test Sieves 9No 6-UCTA Ultrasonic Clay Tester Accessory 6No 32-USSM (ho) Universal Sand Strength Machine (USSM Hand Operated) 31No 33-USSM (md) Univeral Sand Strength Machine (USSM Motor Driven) 32No 35-HDS - High Dry Strength Accessory for USSM 34No 34-SSA - Shear Strength Accessory for USSM 33

No 40-SPA - Splitting Strength Accessory for USSM 38No 36-TNCA - Tensile Core Strength Accessory for USSM 35No 37-TRCA - Transverse Core Strength Accessory for USSM 36

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Stringent control of the properties of moulding material is imperative for the consistent production ofhigh quality castings at the minimum cost, particularly when using automated moulding lines.

This catalogue describes and illustrates a comprehensive range of equipment which will meet therequirements of the modern foundry for testing and controlling moulding and coremaking materials.

Most of this equipment is manufactured under licence to the design of the H.W. Dietert Co., USA,who are one of the leading suppliers of sand testing equipment to foundries throughout the world.Several items have been developed by us in the UK.

Please note that all equipment included in this catalogue can be produced to prepare and test eitherAFS (imperial) or DIN (metric) specimens. The dimensions of the AFS and DIN specimens whichcan be prepared and the capacities of the testing equipment in the relevant imperial or metric unitsare given in the description of the relevant items. When enquiring about or ordering this equipment,please state whether AFS or DIN models are required.

A complete repair and overhaul service for most items of equipment is available at our works, and

an on-site calibration service can also be provided.

Our policy is one of continuous improvement and hence the illustrations in this catalogue may notinclude detailed modifications.

RIDSDALE & CO. LTD.,Newham Hall, Newby,Middlesbrough

ENGLAND, TS8 9EA

Telephone: +44 (0) 1642 300500Fax: +44 (0) 1642 315209Website: www.basrid.co.ukemail: [email protected]

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For taking representative samples of s ilica sand

This tool is used for obtaining samples of silica sand from lorries, stockpiles or storage bins. It is easilyinserted if the sand is not packed. It has a polished stainless steel stem, which is strong, light, resists wearand is easy to handle, and also a detachable operating handle.

To collect the sand sample, the sampler is inserted into the sand pile to the required depth. During insertionthe moveable collar prevents entry of sand into the collecting chamber; only when the sampler is withdrawndoes the collar move down to allow access of the sand to the chamber. When the sampler is completelywithdrawn from the sand pile it is turned upside down enabling the sand sample to run through the samplertube into the sand sample container.

SPECIFICATIONS: Net Weight: 3 kgDimensions: 80 x 80 x 1550 mm (2100 mm with extension)

Gross Weight: 14 kgGross Dimensions: 190 x 220 x 1590 mm

The sample dividers are obtainable in two sizes as specified below :-

SPECIFICATIONS: Slot Width: 6.35 mm () 12.7 mm ()Net Weight: 1.1 kg 3 kgDimensions: 200 x 180 x 130 mm 370 x 250 x 210 mmGross Weight: 2.5 kg 5 kg

Gross Dimensions: 320 x 220 x 200 mm 400 x 320 x 270 mm

SILICA SAND

SAMPLER

SAMPLE DIVIDERS

For uniform reduction of representative samples

Gross samples if not too large may be reduced to testsample size by one or more passes through a sampledivider which will divide a sample in half while maintaining

the particle size distribution of the original sample. Byrepeated passes the sample can be split into quarters,eighths, etc., until the size of the sample desired isobtained.

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For the determination of the clay content of a moulding sand

Comprises motor stirrer unit, two glass beakers, metal stand, syphon tube, cleaning brush andseparate control box with time switch and audible alarm.

The determination of the clay content of a moulding sand is made by agitating a sample of the sandin a weak tetrasodium pyrophosphate solution in a glass beaker, then syphoning off the clay-bearing solution using the special clip-on syphon tube. The process of re-diluting, agitating andsyphoning is repeated until the solution is clear. The sand grains collected in the beaker are thendried and weighed, and the clay grade is calculated from the loss in weight. The sand grains arenormally retained for grading by sieving.

The features of the Type N Rapid Sand Washer are that the motor stirrer unit is more robust than informer models, the agitator disc is replaceable, and the wash bottle assembly is replaced by a

special graduated heat resisting glass beaker which is mounted in a metal stand for stability duringthe agitation process. The incorporation of a separate control box provides an invaluable means oftiming and controlling the agitation and settling periods. (This controller can be purchased as aseparate item for use with former Rapid Sand Washer models or with other equipment).

SPECIFICATIONS:- Net Weight: 6.4 kgDimensions: 370 x 200 x 200 mm (Washer)

180 x 120 x 120 mm (Control Box)Gross Weight: 20 kgGross Dimensions: 520 x 400 x 370 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz

RAPID SAND

WASHER

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For the determination of live clay content in foundry sand systems

SPECIFICATIONS:- Net Weight: 15 kgDimensions: 360 x 330 x 1120 mmGross Weight: 20 kgGross Dimensions: 1050 x 520 x 370 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz

METHYLENE BLUE

CLAY TESTER

Comprises strong metal base with titration stand inwhich is mounted a reservoir with gravity-filledburette and overflow bottle, plus motor driven stirrer:also included are two 250 ml stainless steelbeakers, one 500 ml flask with 50 ml calibrateddelivery pipette, two bottles of methylene bluesolution, one bottle of tetrasodium pyrophosphate,box of circular filters, bottle of vaseline and glass rod

The determination of the live clay content in foundrysandsystems is made through a measurement of its baseexchange capacity by titration with methylene bluesolution.

If the sand is titrated following the minimum oagitation one can measure the dispersed clay,which is that portion of clay which is free to react. Ithe sand agglomerates are broken down (byultrasonic scrubbing or by boiling with sulphuricacid), one measures the total live clay in the sandsystem.

The Methylene Blue Clay Tester can thus be usedto determine dispersed or total live clay contents insands bonded with western and/or southernbentonites, or with refractory clay. It can also beused to check incomin cla /bentonite shi ments.

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For use with the methylene blue clay tester for the determinationof total live clay content in foundry sand systems

Comprises ultrasonic bath with cover, plus support O rings,supply of silicon carbide grit and wetting agent.

The function of the Ultrasonic Accessory is to break down the clay agglomerates so that all the liveclay is free to react in the methylene blue test. Hence the total live clay content of sands bonded

with western and/or southern bentonites, or with refractory clay is determined. Incomingclay/bentonite shipments can also be checked for total live clay content using the Methylene BlueClay Tester with Ultrasonic Accessory.

SPECIFICATIONS:- Net Weight: 2.5 kgDimensions: 200 x 190 x 200 mmGross Weight: 4.5 kgGross Dimensions: 250 x 260 x 380 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz

ULTRASONIC

CLAY TESTER

ACCESSORY

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For measuring the specific surface area of c lay-free sand

SPECIFICATIONS:-

Net Weight: 7kgDimensions: 230 x 290 x 800 mmGross Weight: 11 kgGross Dimensions: 430 x 390 x 1000 mm

SAND SPECIFIC

SURFACE TESTER

The Sand Secific Surface Tester operates on an airpermeability method and is used to determine the actualsurface area of sand samples in terms of squarecentimetres per gram of sand.

In the past, the evaluation of grain shape has been basedalmost entirely on microscopic observation. With theSand Specific Surface Tester, angularity and specificsurface area can now be expressed quantitatively andaccurately. This instrument makes it possible to eliminatethe total reliance on human judgement that is a majorfeature of microscopic methods.

The specific surface test enables the operator to estimateliquid binder requirements quickly for new, unknownsands.

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For the rapid screen analysis o f mould ing sands.

Bench Mounted Model

SPECIFICATIONS: Net Weight: 43 kgDimensions: 500 x 420 x 730 mm (including rods)Gross Weight: 65 kgGross Dimensions: 680 x 590 x 390 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz.

SIEVE SHAKER

OCTAGON 2000 DIGITAL. A highperformance electromagnetic shaker thatutilises a vibratory action which movesthe sample over the sieve in a uniqueway, whilst rapid vertical movementskeep the apertures from binding.Features include digital, vibration andamplitude control, continuous ointermittent vibration control, 0-99 minutetimer. No rotating parts to wear out.Unique quick release sieve clampingdevice holds up to eight full height o

eighteen half height sieves. Suitable fo200 mm or 8 inch diameter sieves.

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For the particle size analysis of moulding materials

In Table 1 below is the BS 410: 1986 series recommended in UK for the normal particle size analysisof foundry moulding materials: in Table 2 is the DIN 4188 series and in Table 3 the AFS recommendedseries. The BS and DIN series conform to international standard ISO R565 and comprise 200 mm diametersieves : the AFS series conforms to ASTM E11-95 and comprises 8 diameter sieves.

N.B. 200 mm diameter (metric) sieves wil l not nest with 8 diameter (imperial) sieves.

The standard sieve height is 50 mm for the metric sieves or 2 for the imperial sieves, but half height, 25 mmor 1, can be supplied if required.

In addition to the sieves specified below, intermediate micron (mesh) sizes are available if required.

Sieves to BS 410: 1986 (ISO R565) Sieves to DIN 4188 (ISO R565) AFS Sieves to ASTM E11-95Nominal Aperture

in MicronsNearest Mesh

NumberNominal Aperture


NumberNominal Aperture


Number1000710500355

2502121801501259063

16223044

607285

100120170240

14001000710500

355250180125906345

12162230

446085

120170240350

33501700850600

4253002121501067553

6122030

405070

100140200270

Table I Table 2 Table 3

SPECIFICATIONS (Set of 11 sieves plus lid, receiver and cleaning brush) :-FULL HEIGHT: HALF-HEIGHT:

Net Weight: 6 kg 4 kgDimensions: 220 x 220 x 635 mm 220 x 220 x 350 mmGross Weight: 9 kg 8 kg

Gross Dimensions: 480 x 440 x 360 mm 480 x 440 x 360 mm

STANDARD TEST SIEVES

These woven wire mesh sieves are designed to combineminimum weight with maximum rigidity, and aremanufactured with no joints in the circumference to ensurecomplete freedom from any corners where test material maylodge. 60 degrees angle bevel leads onto the mesh. Lid andreceiver are also available which nest smoothly with thesieves.

Sieves are usually supplied with brass frames and phosphorbronze mesh, but stainless steel frames and mesh are alsoavailable.

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For milling and mixing experimental batches of moulding and core sands.

460 mm diameter pan capacity 1-4 kg of sand. Fitted with tundish and sprinkler for uniform distribution ofwater additions.

This mill is similar in design to the roller type of sand mills used in foundry practice. The preparation ofexperimental sand mixtures under full-scale conditions in the foundry can become costly, and a small mill istherefore an essential piece of equipment for the sand testing laboratory.

A hp motor is directly coupled to the driving shaft which is suitably geared to rotate the rollers at a speed of30 rpm.

Push button Stop/Start switch with inching button gives easy control for adding materials and discharging themixture.

A cut out switch is fitted to prevent operation of the motor when the safety grill is raised.

SPECIFICATIONS: Net Weight: 172 kgDimensions: 850 x 550 x 500 mmGross Weight: 220 kgGross Dimensions: 1030 x 730 x 700 mm

Power Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz.

LABORATORY MILL

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Ideally sui ted for mixing oil, resin and silicate bonded sand mixtures.

Two specially shaped blades mounted on solid steel cone rotate at a speed of 35 rpm.

Time Switch, incorporated in the machine for starting and switching off the motor,can be set for periods up to 15 minutes.

Designed for making small scale mixtures from 1-2 kg in the laboratory. The blade assembly is

driven directly from the output shaft of a robust hp geared motor. Fixed breakers on the side ofthe pan churn up the mixture and give very efficient blending in a few minutes. Sand is readilydischarged by pulling out the door at the base of the pan. Another important feature is the easewith which the complete blade assembly can be removed to facilitate cleaning. A cut out switch isfitted to prevent operation of the motor when the safety grill is raised.

SPECIFICATIONS: Net Weight: 42 kgDimensions: 300 x 500 x 360 mmGross Weight: 75 kgGross Dimensions: 670 x 360 x 490 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz.

LABORATORY SAND

MIXER

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For the rapid and accurate determination of moisture in moulding sands.Equal in accuracy to the oven drying method

Complete with three 50 mm deep drying pans, pan cooling base and handling tongs.

Mechanical time switch 0-15 minutes. Temperature range approximately 90-170 C.

This is an instrument in which preheated air is passed through the material to be tested which iscontained in a tared sample pan with special woven wire base. The sample is weighed, and thendried for a specified time at a thermostatically controlled temperature. After the moisture has been

removed, the material is again weighed. The quick action of the Moisture Teller is due to the hot airbeing blown through a thin layer of the material. A feature of this machine is that a large sample (50grams) is used, thus increasing the accuracy of the method.

The Moisture Teller can also be used to determine moisture in materials other than moulding sands(eg iron ore, crushed sinter, coal, metal powder, salt, hay, yarn, soap powder, malt and dried orshredded foodstuffs). Pans deeper than the normal 50 mm depth can be provided to accommodatean equivalent weight of material if this is less dense than moulding sand.

SPECIFICATIONS:- Net Weight: 10 kgDimensions: 250 x 350 x 570 mmGross Weight: 30 kg

Gross Dimensions: 670 x 340 x 480 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz.

MOISTURE

TELLER

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Used in conjunction with the moisture teller for direct reading of moisture content.

Moistbalance fitted with direct reading dial graduated 0-20% moisture in 0.2% divisions using a 50 g

sample. This is a sturdily constructed precision balance using high grade materials such as agatebearings, steel knife edges and Alnico damping magnets.

SPECIFICATIONS: Net Weight: 4 kgDimensions: 360 x 140 x 300 mmGross Weight: 10 kgGross Dimensions: 530 x 540 x 340 mm

MOISTBALANCE

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A portable and self-contained uni t, easy to use anywhere in the foundry.

Two models of this tester are available, namely, Model Type C2, measuring 0 - 10% moisture in0.1% divisions and Model D2, measuring 0 - 20% moisture in 0.2% divisions.

The weighed sample of sand is shaken up with a measured quantity of Speedy absorbent material

(calcium carbide) in the sealed container. The principle being that acetylene gas is evolved inproportion to the amount of moisture in the sand. The gas pressure is registered on the gaugewhich is calibrated in percentage moisture.

Additional supplies of the absorbent material are held in stock in tins containing kg calciumcarbide.

Because absorbent material gives off an inflammable gas when in contact with water it isdesignated as hazardous by all transport organisations. Overseas consignments may thereforerequire separate transport arrangements from those used for other equipment.

SPECIFICATIONS: Speedy Moisture Teller(less Absorbent Material)

Net Weight: 5 kgDimensions: 355 x 340 x 120 mmGross Weight: 7 kgGross Dimensions: 510 x 380 x 210 mm

The standard Speedy calibration relates to free water in ordinary sand, ie, building sand. For othermaterials adjustments may be necessary to obtain equivalent results to oven tests or othercomparative tests, ie, on foundry sand.

SPEEDY MOISTURE

TESTER

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For easing weighing of sand samples used for preparing test specimens.

SPECIFICATIONS:Net Weight: 4kg

Sliding riders eliminate the use of weights and Dimensions: 460 x 200 x 250 mmfacilitate quick weighing. Gross Weight: 20 kg

Gross Dimensions:670 x 340 x 480 mmCombined funnel and scoop avoid physical loss

when transferring sand to specimen tubes

SLIDING WEIGHT

SCALES

These scales have been speciallydesigned for use in the sand testinglaboratory.

Small weights are not required forweighing samples up to 210 grams.

This range is quite adequate for alltest specimens which usually weighfrom 140-180 grams.

The total capacity of 2 kilograms isachieved, if required, using additionalweights and, with a sensitivity of 0.2grams, this is sufficient for mostresearch and control tests.

DIGITAL BALANCEFor easy weighing of sand samples used fopreparing test specimens.

Supplied with a specially designed combinedfunnel and scoop to avoid physical loss osample when transferring to specimen tubes.

This is a flat platform digital balance with a

capacity of 1200 g, readability 0.1 g, linearity0.1 from 0-600 g, 0.2 from 601-1200 g.

Has several weighing as well as partscounting modes and also a tare facility.

Supplied complete with mains adaptor.

SPECIFICATIONS:Net Weight: 1.8 kgDimensions: 135 x 235 x 70 mmGross Weight: 3.5 kg

Gross Dimensions: 260 x 300 x 140 mm

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For preparing test specimens in the laboratory

SPECIFICATIONS:-Net Weight: 27 kgDimensions: 600 x 220 x 270 mmGross Weight: 42 kgGross Dimensions: 800 x 360 x 370 mm

LABORATORY SAND

RAMMER (Type N)

The Type N Sand Rammer is an improved version othe original model, incorporating a second cam next tothe crosshead which facilitates easy location of thespecimen tube under the ram head. The new model isalso substantially stronger in construction and easier touse and maintain.

This Sand Rammer, like the original version, is thusused to ram cylindrical specimens either to AFS (2diameter x 2 height) or DIN (50 mm diameter x 50 mmheight) specifications for use on the Permeability

Meter/Electric Permmeter to determine permeability, theShatter Index Tester to determine toughness orplasticity or the Green Compression Strength Machine,Universal Sand Strength Machine or High Strength

Testing Machine to determine compressive strength.

By using suitable accessories with the Sand Rammer, itcan also be used to determine density, flowability orcompactability or to produce specimens for testingshear strength, tensile strength, transverse strength orsplitting strength on the Universal Sand StrengthMachine or High Strength Testing Machine.

RAMMING BLOCK

To eliminate variation in ramming density oftest specimens

Uniform ramming of sand specimens is essentialwhen comparing results between differentlaboratories. By using the Ramming Block it isno longer necessary to mount the Sand Rammeon a separate bench or solid support. Uniformityin ramming is assured irrespective of the type obench used.

SPECIFICATIONS:Nett Weight: 51 kgDimensions: 345 x 255 x 105 mmGross Weight: 60 kgGross Dimensions: 440 x 340 x 340 mm

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Suitable for controlling the flowability of moulding sands

DENSITY INDICATOR

FLOWABILITY INDICATOR

Flowability is the property which enables a sand to flowreadily into a mould and fill up the interstices when subjectedto ramming. It is influenced by moisture, permeability, grainshape, fineness and clay content. The indicator is a speciallyconstructed dial gauge calibrated to read in percentageflowability, and may be readily attached to the Sand Rammer.The stem rests on top of the plunger shaft and the movementbetween the fourth and fifth drop of the weight is registered

as flowability. The further the plunger descends, indicatingincomplete flow the lower the percentage flowability. Whenthe Sand Rammer is used for ramming test specimens, theindicator is rotated out of position. The flowability indicatorcan be supplied to fit either an imperial (AFS) rammer or ametric (DIN) rammer.

SPECIFICATIONS:Net Weight: 0.3 kgDimensions: 60 x 50 x 120 mmGross Weight: 0.55 kgGross Dimensions: 170 x 130 x 120 mm

For determining the density of arammed moulding or core sand or the

correct weight of sand to form a 2diameter AFS (imperial) or 50 mmdiameter DIN (metric ) specimen

Density indicators can be supplied to fiteither AFS (Imperial) or DIN (Metric)rammers.

This accessory is readily attached to theSand Rammer. The position of the pointeris controlled by the length of rammed sandspecimen. Two of the graduations on thescale indicate the density of sand in lb/ft

3

for AFS (imperial) and kg/m3 for DIN(metric) equipment. The third shows theweight of sand required to form a 2 x 2dia. (AFS) specimen after ramming 165grams of sand or 50 mm x 50 mm dia.(DIN) specimen after ramming 157 gramsof sand.


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For measuring the degree of temper of a sand and for providing a means of assessing the

waterrequirement irrespective of grain size or shape

Compactability Scale Accessorymounted onSand Rammer.

Filler Accessory for the consistentfilling of the specimen tube.

Comprises scale (for mounting on the Sand Rammer), plus tube filler necessary complete with sieveand strike off blade.

This accessory is mounted on the standard Sand Rammer and measures the percentage decreasein height of a riddled mass of sand 4 high (AFS) or 120 mm high (DIN) under the influence of thecompacting force. It is easy to install and does not interfere with the use of the Density Indicator.

SPECIFICATIONS:- Net Weight: 5 kgDimensions: 170 x 170 x 380 mm

Gross Weight: 6 kgGross Dimensions: 180 x 260 x 400 mm

COMPACTABILITY

TESTER

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For preparing either AFS (1 x 1 central section) or

DIN (22.4 mm x 22.4 mm central section) tensile test specimens.

For ramming AFS (1 x 1 x 8 ) or DIN (22.4 mm x 22.4 mm x 172.5 mm)transverse test specimens

TENSILE RAMMING

ACCESSORY

The accessory consists of a split metal corebox, base and ramming head for attaching toSand Rammer. Produces a convenientspecimen for testing high strength sandmixtures.

The assembled core box is placed under theSand Rammer and the handled cranked threetimes as for ramming the compression testspecimens.

SPECIMENS:Net Weight: 1.3 kgDimensions: 120 x 100 x 90 mmGross Weight: 1.7 kgGross Dimensions: 90 x 140 x 140 mm

TRANSVERSE RAMMING ACCESSORY

Comprises steel-faced aluminium ram headwith clip for securing to Sand Rammer;hopper; split mould, to allow easy removalof core; base plate; spring steel cut-off knifeto size specimens accurately; and foudrying plates.

A practical and accurate method of preparingtransverse specimens when attached to theSand Rammer.


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For ramming AFS (2 diameter) or DIN (50 mm diameter) dry sand and core sand specimens

Complete with pedestal cup and four metal drying plates.

The tube is placed on a drying plate and is split to free the rammed specimen.

This tube furnishes a convenient method of preparing core specimens which, because of their verylow green strength, cannot be stripped from the ordinary specimen tube. The split feature enablesthe operator to withdraw the mould from the test specimen, thus preventing distortion by handling.

SPECIFICATIONS:- Net Weight: 1.4 kgDimensions: 90 x 70 x 110 mmGross Weight: 1.7 kgGross Dimensions: 190 x 140 x 140 mm

SPLIT SPECIMEN

TUBE

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For gassing test specimens of sand mixtures bonded with sodium silicate based binders

CO2 GASSING

ACCESSORIES

The specimen is rammed in the AFS or DINSplit Specimen Tube (2 diameter x 2 heightfor AFS, 50 mm diameter x 50 mm height forDIN) and transferred to the perforated basecup for gassing.SPECIFICATIONS:

Net Weight: 0.5 kgDimensions: 100 x 70 x 30 mmGross Weight: 1.0 kgGross Dimensions: 130 x 130 x 60 mm.

The specimen is rammed in the AFS oDIN Transverse Ramming Accessory (1x 1 x 8 for AFS, 22.4 x 22.4 x 172.5 mmfor DIN) and the core box containing therammed sand is transferred to theperforated base for gassing.SPECIFICATIONS:Net Weight: 0.7 kgDimensions: 235 x 65 x 30 mm

Gross Weight: 1.3 kgGross Dimensions: 335 x 135 x 70 mm

The specimen is rammed in the AFS or DIN

Tensile Ramming Accessory and the corebox containing the rammed sand istransferred to the perforated base fogassing.SPECIFICATIONS:Net Weight: 0.5 kgDimensions: 125 x 100 x 50 mmGross Weight: 1.0 kgGross Dimensions: 170 x 130 x 120 mm

Gassing Accessory for

Compression Test Specimen

Gassing Accessory for Tensile

Test Specimen

Gassing Accessory for

Transverse Test Specimen

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For making tensile specimens of shell mould ing materials.

The accessory consists of a three gang splitmould, base plate, combined dump box andstrike-off blade and special inserts for thetensile grip jaws on the Universal Sand StrengthMachine.

The dump box is used to measure the quantityof pre-coated sand and to strickle the top of themould.


For making transverse specimens of shell moulding materials

SHELL MOULD

TENSILE

ACCESSORY

SHELL MOULDTRANSVERSE ACCESSORY

This accessory includes a two gang core boxfor the preparation of transverse testspecimens and a combined dump box andstrike-off blade.

SPECIFICATIONS:-Net Weight: 2.5 kgDimensions: 285 x 85 x 15 mmGross Weight: 2.9 kgGross Dimensions: 330 x 140 x 70 mm

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For preparation of test specimens of chemically bonded sand

For Transverse Specimens

The multigang core boxes are made from wood rather than metal to prevent any chill effects duringcuring.

MULTIGANG TENSILE &

TRANSVERSE CORE BOXES

The core box is constructed of twelvepolished hardwood transverse core boxesclamped in ladder style in a wooden frame.Each core box is shaped in such a way toenable easy removal of core specimens.

The unit comes complete with a strickleblade.

SPECIFICATIONS:Net Weight: 6.0 kgDimensions: 590 x 300 x 90 mmGross Weight: 8.0 kgDimensions: 620 x 310 x 340 mm

The multigang transverse core box can besupplied to produce either AFS (imperial) 1x 1 x 8 or DIN (metric) 22.4 x 22.4 x 172.5mm specimens

For Tensile Specimens

The core box is constructed of four threecavity tensile core boxes clamped side byside in a wooden frame. Each polishedhardwood core box is split for easy removalof specimens. The unit comes complete withstrickle blade.


The multigang tensile core box can besupplied to produce specimens with eitheAFS (imperial) 1 cross section or DIN(metric) 22.4 mm cross-section test widths.

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For baking or curing oil sand and resin bonded core sand specimensor drying clay bonded specimens

SPECIFICATIONS:Net Weight: 47 kgDimensions: (Internal): 400 x 392 x 420 mm

(External): 570 x 765 x 620 mmGross Weight: 112 kgGross Dimensions: 960 x 720 x 720 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz.

LABORATORY CORE

BAKING OVEN

The temperature range of 30-300C is precisely controlled by a solid state controller withthermocouple sensor. A fail safe thermostat is also incorporated.

The inclusion of large area heating elements, mineral wool insulation and a forcedconvection fan ensures optimum thermal efficiency with rapid heat up.

The flow of air through the oven may be controlled by adjustable vents in the back.

The case is fabricated in mild steel, with stainless steel interior. There are two sets of shelsupports with two bright nickel wire plated shelves capable of accommodating twenty-foucompression or tensile specimens.

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For producing blown test specimens from shell sand mixtures

The laboratory core test piece blower can be used to produce specimens from hot or cold curingmixes. A series of dies/patters with insulated handles can be supplied for producing both tensileand transverse specimens to shell and core dimensions.

The instrument incorporates a highly rated (IP 65) digital temperature controller, which givesexcellent protection from dust, water and impact as well as accurate control of the cure temperature.

The unit is available with several die plates and magazine sizes, and can produce either AFS(imperial) or DIN (metric) specimens.

SPECIFICATIONS:Net Weight: 39 kg

Dimensions: 720 x 350 x 240 mmGross Weight: 60 kgGross Dimensions: 860 x 460 x 360 mm

LABORATORY CORE TEST

PIECE BLOWER

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For determining the green and dry permeability of moulding sands and core sands

O ring sealing mechanism and standard orifice.

Clear flexible tubes facilitate routine cleaning and maintenance.

The Permeability Meter can be used for determining the permeability of AFS (imperial) or DIN(metric) test specimens in accordance with British and AFS standard specifications. The body ofthe permeability meter is a strong aluminium casting consisting of a water tank and base. Inside thewater tank floats a balanced air bell which is calibrated to deliver two litres of air at a constantpressure of 10 cm water. An expanding O ring is used to form an airtight seal between the centrepost and the specimen tube.

Each meter is supplied with two standard orifices for rapid determination of permeability.

SPECIFICATIONS:- Net Weight: 13 kg

Dimensions: 200 x 200 x 680 mmGross Weight: 25 kgGross Dimensions: 280 x 310 x 780 mm

PERMEABILITY

METER

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This unit is portable and enables quick permeability testing

The Electric Permmeter employs the orifice method and the pressure drop is indicated on a verysensitive gauge graduated directly in Permeability Units.

In sand control laboratories where time is an important factor, quicker testing with the ElectricPermmeter makes it possible to carry out more routine tests per day and to speed decisions so thatimmediate action can be taken in correcting any drift in permeability which may otherwise result inloss in production.

As this instrument is readily portable it can also be taken into the foundry to carry out permeabilitytests on actual production moulds in conjunction with the mould permeability accessory.

The actual test is extremely simple. An expanding O ring is used to form an airtight seal betweenthe centre post and the specimen tube. The required air pressure (10 cm of water) is supplied by ahigh speed fan with rheostat-controlled universal motor. Two standard jets are provided to permitchecking of the Electric Permmeter.

SPECIFICATIONS:- Net Weight: 13 kgDimensions: 245 x 380 x 300 mmGross Weight: 25 kgGross Dimensions: 350 x 490 x 360 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60 Hz

ELECTRIC

PERMMETER

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Used to measure the permeability of the actual mould surface in permeability uni ts

SPECIFICATIONS: Net Weight: 0.9 kgDimensions: 60 x 70 mm (Tube 13 mm dia. X 1000 mm)Gross Weight: 1.2 kgGross Dimensions: 190 x 140 x 140 mm

Supplied complete with inflation bulb.

MOULD PERMEABILITY

ACCESSORY

CORE PERMEABILITY TUBEFor determining the permeability of dry sand,baked or cured core sand specimens after theyhave been stripped from the specimen tube

This specially shaped tube is fitted with an internalrubber sleeve which is inflated to seal the curvedsurfaces of the specimen.

Under test, air can only pass through the specimen

between the flat faces. This tube can be used witheither the Permeability Meter or Electric Permmeter.


This accessory is essentially a rubber-faced contacthead connected with pvc tubing to an adaptor thatfits any permeability meter centre post. Formaximum convenience it should be used with theElectric Permmeter which is readily portable.

The contact head is held against the mould surfaceand the permeability is read on the permeabilitymeter. Mould permeability correlates with casting

quality, whereas laboratory permeability is a gaugefor sand comparison and for determining anychange in the venting power of the sand itself.

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Approved Ridsdale design for determining the mouldabil ity of green sands

This method of ejecting the test Anvil mounted on solid steel supportSpecimen ensures reproducible integral with base prevents impactresults. vibration.

SPECIFICATIONS: Net Weight: 54 kgDimensions: 420 x 430 x 2400 mmGross Weight: 104 kg

Shatter Index less Support TubeGross Weight: 84 kg (net 44 kg)Gross Dimensions: 590 x 580 x 680 mm

Support Tube: Gross Weight: 20 kg (Net 10 kg)

Gross Dimensions: 2260 x 100 x 100 mm.

SHATTER INDEX TESTER

Complete with sieve assembly comprising sieve with 13.2 mm aperture toBS 410:86, special receiving pan and lid.

The Shatter Index Test is a simple control test which has beenstandardised in the United Kingdom by the J oint Committee on Sand

Testing (J CST). The Ridsdale tester conforms to the specification of thisCommittee.

A standard AFS or DIN green sand test specimen is ejected from aspecimen tube and falls 6 ft. (1.83 m) on to a steel anvil mounted in thecentre of the 13.2 mm mesh British Standard Test Sieve. Shatter Index isdefined as the percentage of the total weight of the fractured sandspecimen which remains on the test sieve. This value, when correlated

with the compression strength test gives a good indication of themouldability of a sand, ie, the kind of lift which can be obtained when asand mould is removed from a pattern.

In accordance with theJ CST specification thespecimen falls exactlysix feet (1.83 metres).

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BCIRA type with special direct reading balance

Fitted with readily interchangeable spring balance.Alternative capacities :-

AFS (imperial) DIN (metric)0 4.5 psi 0 33.0 kN/m2

0 - 12.5 psi 0 90.0 kN/m2

0 31.0 psi 0 220.0 kN/m2

This is an alternative tester for determining green compression strength. When fitted with the lowcapacity balance it is specially suited for testing unbaked oil-sand core mixtures and uncured resin-bonded sands of very low green strength. The test specimen is rammed in the Split Specimen Tubeand stripped directly on to a special carrying plate.

SPECIFICATIONS:Net Weight: 19 kgDimensions: 270 x 270 x 600 mmGross Weight: 38 kgGross Dimensions: 700 x 370 x 440 mm

GREEN COMPRESSION

STRENGTH MACHINE

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For determining the green and dry bond strengths of moulding and core sands

Supplied with a pair of swivel heads for compression testing.

This highly accurate machine consists of three major parts; frame, pendulum weight, and pusherarm. The pendulum weight swings on ball bearings which are mounted on a steel shaft. Variousaccessories may be easily attached to perform different tests such as COMPRESSION, SHEAR,

TENSILE, TRANSVERSE and SPLITTING strength.

When testing green-sands the test heads are placed in the lower holes of the pusher arm andweight. For dry sands they are inserted in the upper holes where the breaking force is increased bya factor of five. (The breaking force can be increased by a further factor of three by using the HighDry Strength Accessory). A magnetic rider on the scale records the position at which the specimencollapses, and the strength of the sand is read direct from the scale. The Universal Sand StrengthMachine is a deadweight testing machine which will stay in calibration indefinitely.

SPECIFICATIONS:- Net Weight: 77 kgDimensions: 520 x 290 x 520 mmGross Weight: 116 kgGross Dimensions: 640 x 620 x 450 mm

UNIVERSAL SAND

STRENGTH MACHINE

(Hand Operated)

Capacity:

Green Compression Strength(lower position)

AFS (imperial): 18.7 psi:

DIN (metric): 130 kN/m2

Dry Compression Strength(upper position)

AFS (imperial): 93.5 psi:

DIN (metric): 650 kN/m2

Dry Compression Strength(with High Dry Strength Accessory)

AFS (imperial): 280 psi:DIN (metric): 1950 kN/m

2

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For determining the green and dry bond strengths of moulding and core sands

Supplied with a pair of swivel heads for compression testing.

This highly accurate machine consists of three major parts; frame, pendulum weight, and pusherarm. The pendulum weight swings on ball bearings which are mounted on a steel shaft. Variousaccessories may be easily attached to perform different tests such as COMPRESSION, SHEAR,

TENSILE, and TRANSVERSE strength.

When testing green-sands the test heads are placed in the lower holes of the pusher arm andweight. For dry sands they are inserted in the upper holes where the breaking force is increased bya factor of five. (The breaking force can be increased by a further factor of three by using the High

Dry Strength Accessory). A magnetic rider on the scale records the position at which the specimencollapses, and the strength of the sand is read direct from the scale. The Universal Sand StrengthMachine is a deadweight testing machine which will stay in calibration indefinitely.

SPECIFICATIONS:- Net Weight: 84 kgDimensions: 600 x 370 x 535 mmGross Weight: 115 kg (Net 73 kg) (Frame Only)Gross Dimensions: 640 x 620 x 450 mmGross Weight: 20 kg (Net 11 kg) (Motor Only)Gross Dimensions: 550 x 350 x 310 mmPower Supply: 110/115V or 220/240V, 1 phase, 50 and/or 60Hz

UNIVERSAL SAND

STRENGTH MACHINE

(Motor Driven)

Capacity:Green Compression Strength(lower position)

AFS (imperial): 18.7 psi:DIN (metric): 130 kN/m

2

Dry Compression Strength(upper position)

AFS (imperial): 93.5 psi:DIN (metric): 650 kN/m2

Dry Compression Strength(with High Dry Strength Accessory)

AFS (imperial): 280 psi:DIN (metric): 1950 kN/m

2

With the motor driven model the testspecimen is loaded uniformlyeliminating the chance of personalerror. When the specimen collapses, a

switch reverses the motor drive whichreturns the pusher arm to the zeroposition where it is stopped ready forthe next test.

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For green and dry shear strength tests on moulding and core sands

Comprises shear specimen holder and head

For green shear, test heads are placed in lower position on the pusher arm and weight of theUniversal Sand Strength Machine as for the compression test. When the heads are placed in theupper position the breaking force is increased five time, and the scale designated dry shear isread. Shear strength tests up to 220 psi (AFS) or 1530 kN/m2 (DIN) can be made by using thesetest heads in the High Dry Strength Accessory.

Capacity:Green Shear Strength (lower position) Dry Shear Strength (upper position)AFS (imperial) 14.7 psi: AFS (imperial) 73.5 psi:DIN (metric) 102 kN/m2 DIN (metric) 510 kN/m2

Dry Shear Strength (with High Dry Strength Accessory)AFS (imperial) 220 psi:DIN (metric) 1530 kN/m2


SHEAR STRENGTH

ACCESSORY FOR USSM

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Increases the capacity o f the Universal Sand Strength Machinefor compression and shear strength tests

The High Dry Strength Accessory provides the means for determining the dry compression and dryshear strengths of moulding and core-sand mixtures by increasing the capacity of the UniversalSand Strength Machine by a factor of three. It is of sturdy design and produces accurate results.

Capacity:Compression: 280 psi (AFS)

1950 kN/m2

(DIN)

Shear: 220 psi (AFS)

1530 kN/m2

(DIN)


34

HIGH DRY

STRENGTH

ACCESSORY FOR

USSM

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Improved design for breaking the tensile core specimen

The Tensile Core Strength Accessory is fitted with self-aligning contoured grips to AFS (imperial) orDIN (metric) specification. The guide pins line up both left and right-hand jaws for insertion of thespecimen. The guide pins are removed during the test allowing self-alignment of the jaws. It thusprovides a means of uniformly pulling and breaking the test specimen on the Universal SandStrength Machine. When the specimen breaks, the weight falls away from the scale rider.

Distance pieces can be supplied for this accessory so that it can be used for breaking specimens ofshell moulding materials.

Capacity: 365 psi (AFS)3180 kN/m2 (DIN)


TENSILE CORE

STRENGTH

ACCESSORY FOR

USSM

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For breaking the transverse core test specimen

The Transverse Core Strength Accessory consists of two support arms which locate on the pusherarm and loading weight, and can be attached to the Universal Sand Strength Machine in less thanone minute. The left-hand support is fitted with two self aligning knife edges and the right handsupport has one fixed knife edge.

The load on the test specimen is read directly from the Dry Shear scale. Maximum transverseload 73.5 lb (AFS) or 32.5 kg (DIN).

Core specimen loaded at 6 (150 mm) centres.


TRANSVERSE CORE

STRENGTH ACCESSORY

FOR USSM

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For breaking the transverse shell test specimen

The two knife edges in the left hand arm may be adjusted to give loading at either 2 (50 mm) or 3(75 mm) centres.

Maximum transverse load 73.5 lb (AFS) or 32.5 kg (DIN).


TRANSVERSE

SHELL STRENGTH

ACCESSORY FOR

USSM

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For the determination of the splitting strength of a sand specimen

Comprises splitting specimen holder and head

This accessory is to be used in conjunction with the hand operated Universal Sand StrengthMachine but not with the motor driven Universal Sand Strength Machine. A modified accessory isalso produced for use with the Green Compression Strength Machine.

Resistance to breaking under a compression load applied perpendicular to the circumference of thesand specimen provides a measure of its splitting strength.


SPLITTING STRENGTH

ACCESSORY

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For testing high strength materials beyond the capacity of the

Ridsdale-Dietert Universal Sand Strength Machine

This machine utilizes a twin column motorised screw system, horizontally mounted within amechanically rigid frame. Both tensile and compression tests can be carried out on this machine up tomaximum capacity of 20 kN (4500 lbs). The force is measured through a robust strain gauge load celin conjunction with a 16 bit microprocessor based digital processor/indicator, readable in psi or kN/m2

The unit offers peak force display, auto zero, RS 232 signal to printer (printer not included), RS 232 bi-directional signal to customer PC, shunt calibration. The drive is factory set to a speed of 25 mm (1)per minute with fast return. The controls are panel mounted comprising LOAD, STOP, UNLOAD

and EMERGENCY STOP buttons.

COMPUTERISED OPTIONHARDWARE REQUIREMENTS :IBM PC version 286 onwards, hard disk, mouse, slot for 16 bit A-D card location on the motherboard,HP Deskjet printer or similar.

SOFTWARE REQUIREMENTS: The Ridsdale self contained Sand Strength Tester software to runon DOS including Statistical Production Control (SPC) facilities. In addition all test data can be saved inASCII format for processing with customised or proprietary spreadsheets. Software includes real timedisplay of force/time characteristics. Calculates and displays in data window the following : Peak force

Time to failure; Test sample dimensions; Test sample description, eg, customer, order code, castnumber, etc.

POWER SUPPLY110/220 VOLTS AC 50Hz/60Hz 5 AMP

SPECIFICATIONS:HIGH STRENGTH MACHINE CONTROL BOX

Net Weight: 47 kg 7 kgDimensions: 960 mm x 500 mm x 270 mm 420 mm x 360 mm x 180 mm

Gross Weight: 70 kg 20 kg

Gross Dimensions: 1080 mm x 570 mm x 340 mm 560 mm x 470 mm x 280 mm

Power Supply: 110/115 or 220/230V, 1 phase, 50/60 Hz

HIGH STRENGTH

TESTING MACHINE

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For breaking the tensile core specimen

For breaking the transverse core specimen

TENSILE CORE STRENGTH

ACCESSORY FOR HIGH

STRENGTH TESTINGMACHINE

The Tensile Core Strength Accessory is fitted withself-aligning contoured grips to AFS (imperial) or DIN(metric) specification. The guide pins line up both leftand right-handed jaws for insertion of the specimen.

The guide pins are not removed during the test.

Distance pieces can be supplied for this accessory sothat it can be used for breaking specimens of shellmoulding materials.

The results are indicated on the cipher as well as hardcopy on the computer.

Capacity: 4500 lbs.20 kN

SPECIFICATIONS:Net Weight: 1.8 kgDimensions: 105 mm x 80 mm x 380 mmGross Weight: 2.2 kgGross Dimensions: 280 mmx 180 mmx 205 m

The Transverse Core Strength Accessory consists otwo support arms which locate on the load cell andthe traversing ram. The attachment can be fitted tothe High Strength Testing Machine in approximately 1minute. The left hand support is fitted with two selaligning knife edges and the right hand support withone fixed knife edge.

Capacity: 4500 lbs20 kN

Core specimen is supported at 6 (150 mm) centres.

SPECIFICATIONS:Net Weight: 1.6 kg

Dimensions: 230 x 40 x 280 mmGross Weight: 2.0 kgGross Dimensions: 200 x 220 x 320 mm

TRANSVERSE CORE STRENGTH

ACCESSORY FOR HIGH

STRENGTH TESTING MACHINE

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For investment testing of resin coated shell sand

This apparatus assesses the proportion of resin coated sand which peels away from the main bodyof the cured mould.

The Peel Back Tester consists of a hopper assembly mounted above a 250 x 250 x 30 mm hotplate, controllable to 10 C, which is set in an elevated position and pivoted at the centre to enableit to be rotated through 180 . A sample tray sits beneath the assembly to collect the sand materialwhich peels away.

When the required temperature of the hot plate has been reached and stabilised an accuratelyweighed quantity of resin coated sand is released from the hopper on the hot plate. After a pre-determined time the hot plate is rotated through 180 in order to remove the uncured sand, whichfalls on to the sample tray beneath the assembly.

Peel Back quantity and curing speed factor are calculated from the proportion of sand falling on tothe sample tray, compared with the original weight.

SPECIFICATIONS:Net Weight: 27.5 kgDimensions: 580 mm x 300 mm x 500 mmGross Weight: 45 kgGross Dimensions: 710 mm x 380 mm x 510 mmPower Supply: 220/230V, 1 phase, 50/60 Hz

PEEL BACK

TESTER

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For routine checking of the calibration of Universal Sand Strength Machine

For rout ine checking of Electric Permmeter and Permeability Meter

CALIBRATION EQUIPMENT

The Proving Ring consists of a steel ring with a dialgauge inset into the centre.

It is placed in the lower compression head positionof the Universal Sand Strength Machine and comescomplete with a table of certified readings.

It is used for checking the range of 0-18 psi or0-130 kN/m2.

Included in the kit are 2 x 9/16 (14 mm) studs whichlocate the pivots on the steel ring.

SPECIFICATIONS:Net Weight: 0.3 kgDimensions: 70 mm x 65 mm x 30 mmGross Weight: 0.6 kgGross Dimensions: 240 mm x 170 mm x 200 mm

The Tube type Permeability Standard consists of asteel tube with a baked sand specimen inside. Itmay be used to calibrate the Electric or drum typePermmeter. It does not require a matching serialnumber.

The Permeability Standard tubes are equipped witha lower stopper containing a vial of silica gel to keepthe sand specimen dry. If the silica gel is pinkinstead of blue, dry the permeability standard in alaboratory drying oven at a temperature of 105C for30 minutes.

SPECIFICATIONS:Net Weight: 1.3 kgDimensions: 60 mm diameter x 150 mmGross Weight: 2.0 kg eachGross Dimensions: 280 mm x 190 mm x 200 mm

TUBE TYPE PERMEABILITY STANDARDS

PROVING RING

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For the rapid measurement of the volume and rate of gas evolved from moulding materials

GAS DETERMINATOR

Comprises special tube furnace with automatictemperature controller, 60 mm dia. fused silicatube fitted with water-cooled metal closure andspring gun assembly and chart recorder,mounted in one console: complete with 5charts and 12 copper sample cartridges.

This apparatus includes in one console all theequipment necessary for the determination othe gas content of foundry core sand and

moulding materials.

The BCIRA designed special tube furnacehouses a 60 mm diameter silica tube closedhemispherically at one end. The open end isfitted with a water cooled metal closure and aspring gun for injecting thin walled coppersample cartridges into the hot zone of thefurnace.

The furnace is capable of operatingtemperatures up to 1100C and is fitted with a

Eurotherm temperature controller, a solid stateunit allowing the furnace to be brought to thecorrect temperature without attention ordanger of overheating.

Below the furnace and protected by a heatshield is mounted an Arkon Model 63 PressureRecorder (0-250 mm water gauge) whichaccurately records the pressure rise in thetube due to the gas evolved from the sample.

The pressure rise can be converted to gasvolume (per gram of sample) by calibratingwith known weights of pure potassiumhydrogen carbonate

This method of determining the gas evolvedfrom moulding materials has a significantadvantage over the direct volume method inthat it enables the rate of evolution of the gasto be accurately determined. A furtheradvantage is that results are recorded on achart and hence they are independent of thehuman element and one person can readily

operate the equipment.

Services required are electricity, water, drainfor cooling water and nitrogen for sweeping

the tube free from oxygen. These suppliesare connected to the base of the consolewhich can be operated conveniently on astandard metre high laboratory bench.

SPECIFICATIONS:Net Weight: 53 kgDimensions: 640 x 430 x 825 mmGross Weight: 100 kgGross Dimensions:780 x 660 x 1110 mmPower Supply: 110/115V or 220/240V,

1 phase, 50 and/or 60 Hz

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For measuring surface hardness of green sand moulds and green cores

A practical instrument which can be conveniently carried in the pocket and is always ready for use.It is particularly valuable for measuring the degree of ramming in different parts of a mould, and forchecking the uniformity of machine rammed moulds. The pointer can be secured by pressing thelocking button which is used when testing in blind positions of a mould.

The hardness number indicated is the measurement of the depth of penetration of the spring loadedprobe in thousandths of an inch. A mould offering no resistance to the probe would have a zerohardness reading; conversely a mould having a maximum hardness of 100 would withstandpenetration.

Range of readings ... Hardness

Very soft rammed mould 20Soft rammed mould 40Medium rammed mould 50Hard rammed mould .. 70

Very hard rammed mould 85


AFS Standard

GREEN HARDNESS

TESTER B SCALE

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For measuring surface hardness of high pressure green sand moulds

The determination of mould hardness is one of the simplestand most useful methods of assessing and controlling thequality of green sand moulds. The hardness number is anindication of the degree of compaction, and providesinformation on the ability of a mould to producedimensionally accurate castings.

This tester has a conical probe with arounded tip and is spring loaded to 1500grams. A press button at the front of theinstrument locks the pointer whentesting in blind portions of the mould.

Generally, mould hardness values arewithin the range of 60-85 on the

standard Green Hardness Tester (BScale) with 13 mm () radius probe,and this has proved satisfactory withinthis range. With the development ofhigh pressure moulding, however,hardness values in excess of 90 (BScale) have become common and thisinstrument has been introduced fortesting moulds in the higher range of 85-100 hardness.

The relationship between B Scale and

C Scale Hardness Testers is shown inthe accompanying graph. It will benoted that the sensitivities of the twoscales are very similar up to a hardnessof 85, above this the C Scale Testerhas a greater sensitivity.


AFS Standard

GREEN HARDNESS

TESTER C SCALE

RELATIONSHIP BETWEEN "C" SCALE & "B" SCALE

GREEN HARDNESS TESTERS

10

20

30

40

50

60

70

80

90

60 65 70 75 80 85 90 95 100

"B" SCALE

"C

"

S

C

A

L

E

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For controlling the surface hardness of cores

This instrument has a four-point penetrator for abrading the surface of the core. Depth of penetration isregistered directly onto a gauge which represents numerically the hardness of the core.

Hardness measurements will indicate errors in the degree of bake or cure and variations in density overa core surface.

For measuring the sub-surface strength of sand moulds and cores

This instrument was developed primarily for determining the safe stripping time for moulds and coresmade from cold self-hardening sand mixtures, but it has been found equally useful for measuring the

sub-surface strength of CO2-silicate moulds and cores and surface dried green sand moulds.

The graduated probe is driven into the surface of the mould or core by means of a spring loadedhammer inside the body of the instrument. The number of hammer blows of equal impact required todrive the probe a given distance into the material indicates the sub-surface strength.

The spring loading on the hammer is adjustable so that for a given setting it can readily be used as aroutine acceptance test for production moulds and cores.

__________________________________________________________________________________No 44-CHT & No 46-IPT 46

CORE HARDNESS

TESTER

IMPACT PENETRATION TESTER


Dimensions:50 x 50 x 80 mm

Gross Weight:0.7 kg

Gross Dimensions:130 x 120 x 170 mm


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For measuring the green compressive strength of mould surfaces

This pocket-sized instrument gives a strengthreading comparable to the green compressivestrength test obtained on the standard laboratoryspecimen rammed to the same degree as themould.

Capacity: 30 psi 210 kN/m2

SPECIFICATIONS:Net Weight: 0.1 kgDimensions: 45 x 30 x 90 mmGross Weight: 0.5 kg

Gross Dimensions 125 x 125 x 60 mm

A robust pocket un it for measur ing the concen tration of core and mouldmould coating mixtures.

Manufactured from plastic tubing resistant to organic solvents. Improved

design to give greater stability in heavy liquids.

Made of transparent plastic and fitted with an easily read scale (0-90 (Baum),this hydrometer is ideal for foundry work. Little longer than a pencil it may becarried in the pocket ready for immediate use, without fear of breakage.

It may be used for determining the specific gravity of all types of heavier-than-waterfoundry washes, sprays and coating materials, or any other dense liquids orsuspensions.


Dimensions: 10 x 10 x 240 mmGross Weight: 0.06 kgGross Dimensions: 40 x 40 x 260 mm

No 45-MST & 48-FHY 47

FOUNDRY HYDROMETER

(0-90 BAUM)

MOULD STRENGTHTESTER

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When ordering, please give the description of the Sand Testing Equipment required and ensure wehave your full delivery and invoice addresses. In the case of EU customers we ask you also to provide

your VAT number.

Please also advise, where appropriate :-

(a) The voltage and cycle specifications for electrical equipment.(b) Whether the equipment is required to prepare and/or test AFS (imperial) or DIN (metric)

specimens.

For prices see separate price list. Prices are stated in Sterling and are subject to revision withoutnotice. They exclude packing, despatch and VAT where applicable.

The following terms apply :-

(i) United Kingdom Net monthly account (subject to approved bank and trade references).Insurance and freight are charged extra, and Value Added Tax at the standard rate ischarged on the net invoice value.

(ii) Overseas Packing, documentation, insurance and carriage are charged extra at cost.We shall be pleased to forward a quotation detailing these costs upon request.Prepayment is required on all orders. If it is not possible to prepay, and the value of theorder is in excess of 5,000, payment may be made by means of a confirmedirrevocable Letter of Credit placed at our disposal on a British Bank (all charges, both inthe openers country and in UK, for the account of the opener). A Pro-forma Invoicetogether with guidance notes for the establishment of Letters of Credit will be supplied ifrequired.

Payment may be made by cheque or Bankers Draft, made payable to Ridsdale & Co Ltd at theaddress below or by BACS or inter-bank transfer to Account No 70752118 at Barclays Bank Plc, AlbertRoad, Middlesbrough, England, TS1 1QE, Sort Code 20-56-74, SWIFT Code BARC GB22, IBAN NoGB83BARC20567470752118.

Please send all orders, enquiries and correspondence to :-

RIDSDALE & CO. LTD.

NEWHAM HALL, NEWBY,MIDDLESBROUGH,ENGLAND, TS8 9EA

Telephone: +44 (0)1642 300500Fax: +44 (0)1642 315209Website: www.basrid.co.ukemail: [email protected]
http://www.basrid.co.uk/http://www.basrid.co.uk/

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