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TOOL & DIE -WELDING Technique/Products/Solutions

Tools and Dies are very important to the industry. Failure or breakdown will result in high cost due to loss of production In this brochure you will find information and solutions how to repair expensive tools and dies by welding. Let us help you to Increase Part life, reduce Equipment Down time and Parts Inventory

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CONTENTS

Introduction………………………………….. 3

The welding of dies …………………………. 4

Procedure for welding ……………………… 5-6

How to make composite dies …………………. 6

Preparation examples ………………………… 7

Preheat and tempering tables (AISI) tool steels…… 8

Selector chart for welding Dies (DIN) tool steels…. 9

Selector chart for choosing Gold Electrodes (SMAW) 9-12

Selector Chart for choosing Gold TIG rods …………. 13-14

Applications/Parts/Problems/Solutions ……………….. 15

Tips for Tungsten-Arc (TIG) Welding ……………….. 16

“GOLD “ TOOL AND DIE ALLOYS PROVIDE TOUGH AND LONG LASTING SURFACES GOLD ALLOYS CAN HELP YOU TO REDUCE MAINTENANCE COST AND INCREASE PRODUCTION GOLD ALLOY S ARE MANUFACTURED BY

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Welding-Tool-Steel is generally required for the follow-ing purposes:

• Assembly of a composite tool made of simpler elements • Modification of a tool to suit different requirements or

to repair miss machining (fixing mistakes • Rebuilding of a worn out surface or edge • Repair of a broken, cracked or damaged tool • Improvement of properties on a specific location of a

tool built of a simple steel.

Tool steels...

Tool steel are usually grouped according to their most important function like:

• Cold work tool steel, used for punches, shearing

blades, forming tools, may be made of any one of the tool steels identified by the quenching medium used to develop hardness, listed here in the order of increasing hardenability:

• Water hardening tool steels, (Wx, where x is a serial number)

• Oil hardening tool steels, (Ox, as above) • Air hardening tool steels (Ax and Dx as above). • • Shock resisting tool steels, used for hammers, chisels

(Sx, where x is a serial number) • Hot work tool steels, used for dies for casting and forg-

ing (Hx) • High speed steels, used for machining tools (Tx for

Tungsten based and Mx for Molybdenum based, x is a serial number).

• Other special purpose tool steel

Introduction to tool and die welding

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The welding of tool and dies ………….

Weldability...

Tool steels include a variety of different compositions with most varied types of weldability that is the ease or the difficulty with which they can be welded. However as tool steels are mostly highly alloyed with consider-able amounts of Carbon, Welding-Tool-Steel procedures require appli-cation of preheating and post heating in order to reduce internal stresses, to eliminate crack formation, and need welding skill.

It is generally preferable to weld tool steels in annealed condition, although sometimes it may be impractical to perform an annealing treatment as a prepa-ration for welding.

Shielded Metal Arc Welding-Tool-Steel is the preferred process because of its advantages, like the large selection of available filler materials, the fact that the process is most versatile and the solid slag shielding provides more protec-tion than gas shield (unreliable if drafts are in the area) and may retard cooling which is viewed as a favorable feature.

Heat Treatments.

Preheating temperature to prepare for Welding-Tool-Steel should be selected with care, with reference to the original tool steel and to the condition, if an-nealed or hardened. As a matter of orientation it could be similar to the sug-gested tempering temperature for the steel. Thin materials require lower tem-peratures than thick ones. If Welding-Tool-Steel is performed in several passes, the preheat temperature should be maintained and restored as necessary between passes.

Any visual defects like arc strike marks or end crater, appearing on the surface upon completing the weld must be repaired immediately, before the tool cools down and before post heating is applied.

For Welding-Tool-Steel on annealed materials, one should soften the weld by annealing at the recommended temperature for the steel (and then furnace cooling) or subcritical annealing (that is keeping it for quite a long time at a temperature just below that of austenite transformation and cool in air) before performing machining and finishing. Full heat treatment as required for the tool steel involved will follow.

Post weld heat treating is performed after Welding-Tool-Steel to relieve stresses. Usually the heat is applied again after letting the work cool uniformly somewhat, but before it reaches room temperature.

Postheat should not exceed the tempering temperature for the steel.

Stamping die rebuild gold 770

Guide hardfaced Gold

Shear blades Gold 720

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• Identify /analyze base metal • Choose suitable welding process depending on availability of equipment and size of tool. • For shielded metal (SMAW) arc Welding-Tool-

steel one should follow the recommendations listed hereafter.

• Chose recommended filler material depending on requirement and base metal . (See page 8 se-lector table )

• The smallest size electrode suitable for the job should be selected. • The surface should be prepared by machining or by grinding, with rounded sides grooves presenting a joint angle of at least 30o and such that the width at the bot-tom be greater than the electrode diameter.(see page ?? • If a crack has to be repaired, stop holes should be drilled at both ends and all the cracked portion should be machined away, with smooth transitions. • For edge building or rebuilding it may be advanta-geous to use a support copper or graphite bar to contain the molten filler metal. • Absolute cleanliness is most important for the work and electrodes as it is dryness of electrode cover. • The lowest heat input possible should be used, and should be decreased for successive passes. • If possible the work should be positioned at a slight uphill inclination so that the weld penetration be im-proved. • Preheating should always be performed, possibly in a furnace or in a specially built insulated preheat box, at a suitable temperature before attempting to weld. (refer to table on page ???) • Narrow beads should be deposited and then slag is to be removed by chipping and brushing between passes.

STEP BY STEP PROCEDURE SMAW WELD PROCEDURE

TIG WELDING OF DIE

Grind/machine surface

Drill holes at end of crack Apply skip welding technique for tool

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• Peening lightly is recommended on the hot weld to relieve stresses. Peening spreads the weld and counterbalances the normal contraction due to welding • Tempering After welding, the die must be allow to cool slowly in a draft free area when the die has cooled to room temperature ,it should be re-heated to the “draw range” temperature of the base metal ,the per-mitted to cool again to room temperature. For recommended temperatures refer to table on page ????

Manufacturing Composite Dies Great cost reductions are possible when using lower cost steel(4130,4140) and then hardface the areas exposed to wear with a suitable Gold Welding alloy. The example shows how the cutting edge of a wood, paper, plastic, or steel cutting blade can be made economically by using a low alloy steel base metal and the hardface the cut-ting edge area with Gold 1045 /1047 The additional advantage is that such a blade can be sharpened and rebuilt without problem once it has worn down

Example of composite die

TIPS ON HOW TO SAVE MONEY WITH GOLD WELDING ALLOYS

Effect of Welding Procedures on Hardness. It must be kept in mind that variations in base metal dilution can affect final hardness of weld deposit. In MMA welding the dilution can be as high as 20 to 30 %. Two or more layers of weld deposit may be necessary to achieve desired or specified hardness,

Build– Up Due to excessive wear, erosion or corrosion, heavy build-ups may be necessary when doing repairs to tools and dies. The build up these excessive wear areas should always be done with High Chrome or high Nickel alloys such as Gold 320,Gold 330 or Gold 510. This is necessary because of possible cracking of hard facing alloys when applied in to many layers.

PROCEDURES/RECOMMENDATION FOR TOOL AND DIE REPAIR

Dilution Example

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PREPARATION OF TOOLS AND DIES FOR HARDFACING/REPAIR

Recommended preparation when hard facing cutting edges

Design for repair of cracks in tools and dies

Design for hard facing of knives/composite Punches and dies

Valves

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AISI(AMERICAN IRON AND STEEL INSTITUTE)TOOL DESIGNATIONS /APPLICA-TIONS/ANNEALING/PREHEAT AND TEMPERING RECOMMENDATIONS

GROUPES

HOT WORK-TOOL AND DIES

AIR HARDENING TOOL STEELS

WATER HARDENING

OIL HARDENING

HIGH SPEED STEELS

GRADES USA /AISI

H10,H11,H12 …. To H43

A2 ,A3…to…..A 10 W1…to …...W 7 O1……..06 M1…...M40

OTHER SIMILAR GRADES

SKD6,SKD62, SKD 61, JIS- SKT 4, GB 5 Cr Ni Mo, AISI L-6

1.0875,1.2363, 1.3852 X100 Cr Mo V 5-1

1.1525,1.1545, C 105 W,C80 W1 SKS 43,100 V 2 1.2442,115 W8

1.2510,1.2842 9CrW Mn, 90Mn V 8 95 Mn W Cr 5

1.3243, 1.3343 1.3346, 1.3348 M7,SS2782

TYPICAL APPLICATIONS

Die casting Dies Ejection Rods Hot Cutoff Dies Mandrels Shear Knives Trimming Dies

Shear blades Embossing and coin-ing tools Planishing dies

Composite Tools Cutting Dies Deep Drawing Dies Nibblers Bending Dies Shearing dDes

Cutting Tools Stamping Dies Punches Forming Dies Paper Trimmers

Gear Cutters Planer Tools Forming Tools Punches Wood working Knives Rams

Recommended Preheat temperature

350– 530 °C 300-470 °C 140-230 °C 150-220 °C 520-640 °C

Annealing Temperature

860°C0 790– 840 °C 675-703 °C 750-775 °C 790-840 °C

Tempering Post heating

200-565°C 150-420 °C 150-340 °C 180-300 °C 560-590 °C

Hardening Temperature

1000 °C 920-970 °C 775-790 °C 785-820 °C 1180-1225 °C

Gold Filler Metals Joining

510 E 510 T

330 E,330 T 510 E,510 T

330 E,330 T 510 E,510 T

330 E,330 T 510 E,510 T

330 E,330 T 510 E,510 T

Gold Filler Metals Hard facing

1015 E 1018 E 510 E 770 E CO 12 E

730 E 720 E 1018 E 770 E

730 E 720 E 1018 E 770 E

730 E 720 E 1018 E 770 E

720 E 770 E 1018 E

Attention: the temperatures as provides in this table can serve as a guide only. Whenever possible check the recommendation of the steel supplier Note: Tempering to the higher end of the range will increase toughness, to the lower end of range for the highest hardness

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Tool and die steel selection table for gold products /

STEEL GROUP

Material Grades Typical

MMA(SAW) Gold

HRC HV

TIG (GMA Gold

HRC HV HB

Cold Work-ing Steel

1.2067,1.20801.2363,1.2379 BOEHLER (K110) 1.2436,1.2550,S7,M3 1.2311,1.2721,S1,A2, SKD12,SS2260,O1

330 E 730 E 720 E 1015 E 1018 E

24-26 58-60 60-63 45-50 45-50

330 T 730 T 720 T 725 T 770 T

200-250 HV 58-60 HRC 62-64 HRC 55-58 HRC 39-43 HRC

Hot Work-ing Steel

1.2343, 1.2365,1.23671.2567 ,1.25811.27261.2606,1.2740 ,1.2885 1.2678,1.2713,1.4724 H10,H11,H12, H13,SKD6,SKD62, SKD 61, JIS- SKT 4, GB 5 Cr Ni Mo, AISI L-6

1015 E 1018 E 510 E 770 E CO 12 E

45-50 45-50 260-280 HV 39-43 48-50

510 T 725 T 728 T 770 T CO12

260-280 HV 55-58 HRC 34-36 HRC 39-43 HRC 48-50 HRC

High Speed Steels

1.3243,1.3343 1.3346,1.3348 M7,SS2782

330 E 720 E 770 E 1018 E

24-26 60-63 40-45 45-50

330 T 720 T 770 T 728 T

200-250 HV 62-64 HRC 39-43 HRC 34-36 HRC

Air Hard. Steel Heat – Treatable steels

1.2311,1.2080(SKD11) 1.2343,1.2344 1.2367,1.2721 1.2767,1.2080 1.2379,(K110) boehler 1.24362.4982 1.2885,1,2888

730 E 720 E 1018 E 770 E CO 12

58-60 60-63 45-50 40-45 48-50

730 T 720 T 725 T 728 T 770 T CO12

58-60 HRC 62-64 HRC 55-58 HRC 34-36 HRC 39-43 HRC 48-50 HRC

Cast Iron

GJL 250,300 GJS 400,500,600,700 GG25,30 GGG 40,50,60,70

715 E 410 E 420 E 620 E 1015 E 730 E 1018 E

33-38 18-22 20-26 45-50 58-60 45-50 48-50

410 T 420 T 620 T 725 T 730 T 770 T

180 HB 200 HB 220-240 HB 55-58 HRC 58-60 HRC 39-43 HRC

Corrosion Resistant Steels

1.2083,1.2316 1.4222

510 E 770 E CO12

20-24 40-45 48-50

510 T 770 T

260-280 HV 39-43 HRC

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GOLD ELECTRODES (SMAW) FOR TOOL AND DIE MAINTENANCE

PRODUCT GOLD DESCRIPTIONS

TECHNICAL DE-TAILS

Ø

mm APPLICATIONS

110

129

Electrode with superior blowing „arc“ designed for gouging, cutting and piercing with high speed all common construction metals and alloys as, carbon and tool steels, cast iron, stainless steels, nickel alloys...

CURRENT 3.2 mm : 180— 220A 4.0 mm : 220—280 A

3.2 4.0

330 (639)

Multipurpose high strength ferrite-austenitic electrode for repair welding on alloy and high-alloy-steels, tool-steels, stainless steels and dissimilar assemblies. Use for dies, moulds, press tools, crane booms, shafts, gears, rails armour plates buckets etc.

Rm (Mpa) : 800 Re (Mpa) : 550 A5 (%) : 25 Hardness : as welded ~240—280 HB Weld metal : Cr, Ni, Mn.

1.6 2.0 2.5 3.2 4.0

410 Electrode for cold repair welding of most different types of cast iron. Use for welding and rebuilding of frames, gear box, machine and pump housings, engine blocks, casting defects, pulleys, compressors… Excellent machinabilty. Weld metal composition :Ni > 95, Fe, Mn,

Rm (Mpa) : 350 Hardness : ~180 HB

2.5 3.2 4.0

420 High strength Fe Ni Alloy electrode for cold welding of different Cast irons such as grey cast iron nodular cast iron and for joining cast iron to steel. Electrode will not overheat and has exceptional good me-chanical properties. Base Metals: Grey cast iron ASTM A48 class 25 B-60 B, A536 Grade 60-80 DIN GG15-GG40, GGG 40 to 60, GTS 35 to 65

Rm (Mpa) : 550 Re (Mpa) : 350 A5 (%) : 15 Hardness : 200—220 HB

2.5 3.2 4.0

510 High recovery (170%) nickel base main-tenance electrode. The highly corrosion and heat resistant de-posit combined with excellent mechanical properties makes this electrode a trouble shouter for many problems. Welding of dissimilar joints, difficult to weld steels Use for wear resistant overlays on hot forging tools and dies

Rm (Mpa) : 790 Re (Mpa) : 470 A5 (%) : 35 Hardness ~ 240, 450 HB After work hardened Temperature Resis-tance > 1000°C

2.5 3.2 4.0

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PRODUCT GOLD DESCRIPTIONS TECHNICAL DETAILS

Ø

mm APPLICATIONS

620 Maintenance electrode with a complex Cu-bronze deposit for joining and surfac-ing of copper-alloys, steel and cast iron also for dissimilar joints between copper alloys and steels. Excellent for protection of parts against metal- metal wear. As a overlay for deep drawing of mild steel, stainless steel, aluminium and Tita-nium,

Rm (Mpa) : 660 Re (Mpa) : 420 A5 (%) : 22 Hardness ~200HB Weld metal composition Cu, Mn, Ni, Al

2.5 3.2 4.0

715 Special iron based electrode for repair welding of poor quality, slag or oil con-taining old cast iron ( furnace part, boxes, heaters, pumps,… Also used for hard facing of cast iron press tools and dies (automotive) Use as a first layer (buttering layer) on difficult to weld cast iron

Hardness : ~ 350 HB

2.5 3.2 4.0

720 (1019)

Special hard facing electrode with high –speed steel characteristics. Crack resis-tant deposit, high temperature oxidation resistance, excellent cutting properties, high hard-ness Weld Deposit finished by grinding Use for tool and die repair, cutting tools knives shear blades, press tools etc.

Hardness : ~ 60—63 HRC Weld Metal Analyse : C, Cr, Mo, W, V (martensitic)

2.0 2.5 3.2

730

All position (rutile type) general purpose hard facing electrode for overlays which resist high impact and pressure. The deposit is tough hard and can also be used with one or two layers of Gold 750 on top.

Hardness : ~ 60HRC Weld Metal Analyse : C, Si, Mn, Cr,V,Mo, Fe

2.5 3.2 4.0

1015 Especially for rebuilding edges of cutting tools , knives, shear blades, drills, punch-ing dies, press tools, forging hammers, and other parts subjected to metal to metal wear up to 550 C Weld Deposit is machinable.

Hardness : ~ 45—50 HRC Weld Metal Analyse : Cr, V, W,

2.5 3.2 4.0

GOLD ELECTRODES (SMAW) FOR TOOL AND DIE MAINTENANCE

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PROD-UCT

GOLD DESCRIPTIONS TECHNICAL DETAILS

Ø

mm APPLICATIONS

FOR HIGH TEMPERATURE COMBINED WEAR 1018 Electrode with a Co-Cr composition alloyed

with Molybdenum for surfacing of parts which are subjected to a combination of metal/metal wear, corrosion and heat up to 650 °C and shortly up to 1000°C. Use for press tools, cutting knives, Shear blades …...

Hardness : ~ 45-50HRC At 20°C After work hardening 55HRC Weld Metal : Co, Cr, Mo

2.5 3.2 4.0

1043 Extremely hard and wear resistant Cobalt, chrome tungsten alloy . Ideal for application involving metal to metal friction such as rollers in steel mills, pump shafts, rails, extrusion nozzles, hot cutting and forging tools………...

Hardness : ~ 53-57HRC At 20°C 42-45HRC at 600°C Weld Metal : Cobalt Base, Tungsten, Chrome, Iron

2.5 3.2

1045 (770)

Electrode with a complex Co-Cr composi-tion alloyed with W for surfacing of parts which are subjected to a combination of metal/metal wear, corrosion and heat up to 800°C and shortly up to 1000°C. For valve seats, hot forging tools, screws….

Hardness : ~ 42-45HRC At 20°C 38HRC at 60°C Weld Metal : Cobalt Base, Tungsten, Chrome, Iron

3.2 4.0

1047 Wear resistant (Stellite type)* Cobalt alloy used for extending the life and rebuilding of the following parts. Wood Debarking chipping knives and ham-mers, scrapers, paper cutting knives, etc. *NOTE: stellite is a registered trade name of deloro stellite

Hardness as welded + 20° C 50 HRC Hardness at +600 °C 38-40 HRC Alloy: Co, Cr, WC, Fe, Si

2.5 3.2 4.0

1055 Ni Based electrode for surfacing of hot working tools, shear blades deburring tools ,dies. Forging tools, press tools, valves. Machinable deposit Temperature resistant up to 800 C

Hardness as welded: 250 HB Work hardens up to 450 HB Alloy: Ni, Cr, Mo, Co, WC, Fe

2.5 3.2 4.0

GOLD ELECTRODES (SMAW) FOR TOOL AND DIE MAINTENANCE

Hot forging tool Gears welded gold 330 Forging Die SKD 11 gold

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GOLD TIG WELDING RODS FOR TOOL AND DIE MAINTENANCE

PRODUCT GOLD DESCRIPTIONS TECHNICAL DETAILS

SIZE

Ø mm

330 T

for repair welding on alloy and high-alloy-steels, tool-steels, (SKD 11,SKD 61) stainless steels and dissimilar assemblies.(SUS304,SUS 420….) Buffer layers before hard facing with 720,725,728

Tensile strength:.730 MPa Yield strength: 520 MPa Hardness:200-250 HV Elongation: 25 % Mat.No.1.4337

1.2 1.6 2.4

410 T (NI TI 4)

High strength Ni Alloy for welding nickel alloy like Ni 200, UNS No 2200, Ni 99.2 and for welding of steel to nickel, nickel copper alloy and cast iron. For glass moulds, press moulds engine and cylinder blocks……

Tensile strength: ~540 MPa Mat. No.2.4155 DIN 1.736 : SG-Ni Ti 4

1.6 2.4

420 T (FE NI 50 )

High strength Fe Ni Alloy for welding and overlaying of cast iron and for joining cast iron to steel. For glass moulds, press moulds, engine and cylinder blocks……

Hardness: 130-160 HB (Pure weld metal ) Mat. No.2.4560

2.4

510 T (NI 625)

Welding of dissimilar joints, difficult to weld steels cushion layer, special stainless steels, heat resistant over-lays, hot forging dies, shear blades, valves. pumps, shafts etc Suitable for welding 9% Ni steels, Alloy (Inconel) 625,825,904 L, SKD 61,SKD 6 ,BH11,H13…….. for service temp.from-250ºC to above 1000ºC

Tensile strength:.790MPa Yield strength: 520 MPa Elongation: 25 % Hardness:260-280 HV Mat.N°:2.4831 Similar:ERNiCrMo 3

1.6 2.4

628 T (CU AI 8)

Aluminum-bronze alloy for welding and surfacing . Seawater resistant Used in ship building, for pumps, im-pellors, propellers, screws , for surfacing of shafts, bearings , hydraulic piston heads, cable guides and machinery parts, automotive forming dies etc.

Tensile strength:.400 MPa Yield strength: 180 MPa Elongation: 40 % Hardness:140 HB

2.0 2.4

We supply portable TIG welding machines ,ideal for repairs of tool and die Automatic welding helmet for safe repairs of tools and dies

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PRODUCT

GOLD

DESCRIPTIONS TECHNICAL

DETAILS

SIZE Ø mm

710 T (R 350 )

Tig rod for tool and die repair. Deposits are machinable excellent impact resistance ang toughness. Use for trimming tools, hot and cold cutting dies shear blades, etc.

Hardness 315-450HB Mat. No. 1.2567

1.0 1.6

720 T (HBC 62 )

for rebuilding edges of cutting tools , knives, shear blades, drills, punching dies, press tools, and other parts subjected to metal to metal wear. High speed steel weld deposit. Specially developed , for repairs on M Series(M1,M2,M3 of tool steels (1.3243.13343,1.3346,1.3348…)JIS SKD 11

Hardness:62-64 HRC Mat. No.1.3342 Alloy: Fe, Mo, Cr, V,W.C Excellent cutting ability.

1.2 1.6 2.0

725 T (SMV3S )

For repairs and protective coatings on cold and hot working tools and dies. can be used for making tools and cutting blades by coating edges of carbon steel. Use on air and case hardening steels such as A1,A6,A7 SKD 61,H13, (1.2343,1.2344,1.2367……) Boehler K110…..

Hardness:55-58 HRC (As welded) Alloy:Fe,Cr,Mo,Mn,V X38Cr MoV5

1.2 1.6

728 T MARVAL 18

For repairs and overlays on Aluminium-die casting and Plas-tic moulds, cold and hot working dies.(SKD61,H13)boehler K110,STAVAX ESR …..Developed for welding maraging steels such as X2NiCoMo18-9-5.1.6356 and Maraging 200-500.Weld deposit can be machined and age hard-ened

Hardness:34-36- HRC(As welded) Hardness after ageing for 4 hours At 480C ~51 HRC X 2 Ni CoMoTi 18 8 5

1.2 1.6

730 T (R 600 B)

Economy hard facing rod for tools and dies subject to high impact and medium abrasion. Can be used for overlays on case and air hardening steels, nitriding steels(1.8519,1.8521,1855) and cast iron

Hardness:58-60 HRC Mat. No.1.4718 Alloy: Fe, Cr Si.Ni C Excellent cutting ability.

1.2 1.6 2.0

1045 T (CO 6 )

Cobalt based Rod for surfacing of parts which are subjected to a combination of metal/metal wear, corrosion and heat up to 650 °C and shortly up to 1000°C.Especially for rebuilding edges of Valve seats, cutting tools , knives, shear blades, drills, punching dies, press

Hardness:39-43HRC Alloy: Co Cr,W,Ni,Fe, Excellent hot hardness. WSG-20-GO-40CTZ

3.2

1047 T (CO 12 )

Cobalt base rods with higher hardness specially develop for hard-facing of hot working and wood cutting tools. Alloy: Ni, Cr, Mo, Co, WC, Fe

Hardness as welded:250 HB. Work hardens up to 450 HB

3.2

GOLD TIG WELDING RODS FOR TOOL AND DIE MAINTENANCE

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PART NAME MACHINE BASE METAL PROBLEM USE GOLD Product No

Aluminum die casting mould

Die casting ma-chine

Tool steel Cracks and wear

330 510 728

Anvil Forging Press Hot working Tool steel

Crack 510

Cold stamping Die

Die Cold working tool steel

Crack 330 510

Die Cold working tool steel

Cold working tool steel

Wear 330 1015

Die Forging press Hot working steel Wear 510 1018

Die Stamping Press Cast-Iron Wear 420 620 730

Forging Die Forging Press Hot working Tool steel

Wear 510 1018 1045

Gear Stamping press Cast-Iron Crack 410 420 715

Gear Forging press Steel Wear 330

Mold Vulcanizer Rubber manuf

Cast iron Crack 410 420

Plastic die mold Plastic injection molding

Cold working tool steel

Modifica-tion

330

Shear blades Forge Hot working Tool steel

Cracking Wear

510 1045

Shear Blade Steel mill Cold working Tool steel

Cracks Wear

330 720

Stamping Die Automotive Press Cast– Iron Wear 420 620 715

Trimming Die Automotive Press Cold working Tool steel

Wear 1015

TOOLS/DIES/PARTS/PROBLEMS/SOLUTIONS

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RECOMMENDATIONS FOR FOR GAS TUNGSTEN-ARC (TIG)

TIG WELDING PROCESS

PTA PLASMA WELDING PROCESS FILLER MATERIALS FOR TIG/MIG

• Use only pure Argon(Ar) or a mixture of argon and helium (He) • Check that the shielding gas flow rate are correct for

the choosen cup size, filler metal diameter and tung-sten electrode size

• Check for hose leaks • Avoid welding in drafts (can cause porosity) • Check that the filler metal is correct for the application

and for the size of the part • Check that tungsten electrode is ground correctly and

stick out is correct • Allow sufficient gas flow after extinguishing the arc in

order to let the weld deposit cool slowly • Avoid contact of filler metal with tungsten electrode • Make sure weld area is absolutely clean • Work with automatic darkening helmets as the will

allow you to start at the correct point and avoid start-ing failures

Grinding the Tungsten Electrode