FMP Short Answers

8132019 FMP Short Answers

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UNIT ndash I

Metal Casting Process1 State any four properties of moulding sand

a Refractoriness ndash withstanding high temperature

b Permeability - Allowing the hot gases to escape

c Strength - withstand the shape

d Collapsibility - ability to break after solidification

e Stability - not expanding or contractingf Adhesiveness - to surrounding walls

g Cohesiveness - Between sand particles

h Reusability

2 Name the difference furnaces employed for metal

casting 3 Which type of furnace is suitable for melting ferrous

alloysa Cupola - ferrous

b Induction - ferrous

c

Crucible (coke oil)d Direct and indirect arc

4 What do you mean by pattern amp materials used for

making pattern

bull Patterns has replica shape of final product are used to

mold the sand mixture into shape of the casting

bull Itrsquos normally made of

Wood Aluminum

Steel Cast iron

Plastic Wax

5 What all the factors you will consider before selecting

your patterna Size Shape Complexity

b Surface finish required

c Dimensional accuracy

d Quantity of molding

6 State any four types of pattern

a Single piece

b Split

c Loose piece

d Match plate

e Sweep

f Skeletong Segmental

h Shell

7 Write a note on chilled casting

983124983144983141 983139983144983145983148983148983155 983137983154983141 983157983155983141983140 983156983151 983152983154983151983158983145983140983141 983140983145983154983141983139983156983145983151983150983137983148 983155983151983148983145983140983145983142983145983139983137983156983145983151983150 983151983154 983156983151

983145983150983139983154983141983137983155983141 983156983144983141 983154983137983156983141 983151983142 983155983151983148983145983140983145983142983145983139983137983156983145983151983150 983159983144983141983154983141 983156983144983141 983144983145983143983144 983144983137983154983140983150983141983155983155

983145983155 983154983141983153983157983145983154983141983140983086 983107983137983154983138983151983150 983138983141983139983151983149983141983155 983145983154983151983150 983139983137983154983138983145983140983141 983156983151 983149983137983147983141 983155983151983142983156 983137983150983140

983144983145983143983144983148983161 983149983137983148983148983141983137983138983148983141 983149983141983156983137983148983086

8 Compare the advantage of metal moulds over sand

moulds

9 Mention any two merits and demerits of die casting

Advantage Disadvantage

a Great accuracy

b Good rate of

production

c No sane inclusion

d Less defectse Long life

i Only small parts

i Only for non ferrous

i Suitable for mass

production

High equipment cost

10 What is the need of special casting processa The sand moulds may be used only once because the

mould is destroyed after the metal has solidified Thi

will increase the cost of production

b The sand moulds cannot maintain the tolerance and

smooth surface finish

11 List any four components manufactured using

centrifugal casting process

a Water pipesb Gears

c Bush bearings

d Fly wheelse Piston rings

f Brake drum

g Gun barrels

12 Principles of induction furnace

Electromagnetic induction is the principle used i

induction furnace The heating by the induction metho

occurs when an electrically conductive material is placed i

a varying magnetic field Induction heating is a rapid form

of heating in which a current is induced directly into th

part being heated

13 Merits and demerits of investment castingAdvantage

a) Good dimensional accuracy

b) Relatively inexpensive mold

c) Rapid production rates possible

d) Complex shapes

Disadvantage

a Long production cycle



b Mold is not reusable

c Many processing steps are required

14 What is core and its requirementCore

It a device used in casting and molding processes to

produce internal cavities

Core Prints

It is an added projection on the pattern and it formsa seat in the mold on which the sand core rests during

pouring of the mold

Core Chaplets

Additional support provided at the mold cavity

15 Differentiate the terms lsquomouldrsquo and lsquocorersquo Mould

It is the cavity of the required shape made in

moulding sand or in other material

Core

It is device used in casting and molding processes to


16 What is core ventingA vent used for the release of air or sometimes gas in a

mold or core Slots or screen act as the vent and are used

in such a way that air or gas built up within a mold or

core is permitted to escape

17 Explain the term fettling

Fettling is cleaning of metal casting It involvesa) Removal of dry sand cores

b) Removal of gates and risers

c) Removal of unwanted metal projection and finsd) Removal of adhered sand and oxide scale

1 Wire brushing

2 Tumbling

3 Sand blasting

4 Shot Blasting5 Hydro blasting

6 Pickling

UNIT ndash II

JOINING PROCESS

1 What are the advantages of AC equipments over DC

machines in arc welding

2 Why is the flux used in soldering and brazing

a Dissolve oxides from the surfaces to be joined

b Reduce surface tension of molten filler metal ieincreasing its wetting action or spreadability

c

Protect the surface from oxidation during joiningoperation

i Solder Fluxes- Zinc chloride ammoniumchloride rosin

ii Brazing flux - borates fluorides chlorides

boraxamp boric acid

3 List out any four arc welding equipmentsConsumable

i Shielded Metal Arc Weldingii Submerged Arc Welding

iii

Gas Metal Arc Weldingiv Flux-Cored Arc Welding

v Electro-gas Weldingvi Electro-slag welding

Non Consumable

vii Gas Tungsten Arc Welding

viii Plasma Arc Weldingix Carbon Arc Welding

4 What is the principle of resistant weldingApply force and current through electrodes contacted

metal parts to be welded and resistance heat is

generated at the interface of metal parts and makes a

nugget resulting in melt joint

Though a large current flows there is no danger of an

electric shock because only low voltage is impressed



5 What is the function of tungsten in TIG weldingFunctions

bull Uses a non-consumable tungsten electrodeduring the welding process

bull Uses a number of shielding gases including

helium (He) and argon (Ar)

bull Is easily applied to thin materials

bull Produces very high-quality superior welds

bull Welds can be made with or without filler metalbull Provides precise control of welding variables

(ie heat)

bull Welding yields low distortion

bull Leaves no slag or splatter

6 What are the specific situation where electro slag

welding is used

bull low carbon steel plates andor sections that are very

thick

7 What is fusion weldingThe metal at the joint is heated to a molten state and

then it is allowed to solidify Pressure is not applied

during the welding process

(Eg) Gas Arc welding

8 What is the minimum distance maintained between

successive spot welding and whybull The acceptable minimum distance is 16 times to that

of thickness of metal to be welded

bull If the minimum distance not maintained then shunt

current will flow through the already welded spot

and reduces the quality of welding 9 Write short notes on transferred and non-transferred

arc in plasma arc welding

Non-transferred arc process The arc is formed

between the electrode(-) and the water cooled

constricting nozzle(+) Arc plasma comes out of the

nozzle as a flame

Transferred arc process The arc is formed between

the electrode(-) and the work piece(+) In other words

arc is transferred from the electrode to the work piece

10 Write down the types of flamesi Neutral Flame

ii Oxidizing Flame-

iii Carburizing flame-

11 What is meant by carburizing flame And its

applicationA flame that contains more acetylene than oxygen This

flame will burn at a lower temperature than the other

flames and can add extra carbon to certain welds

O2 C2H2 = 085 to 095

Advantage

bull greater case depth (case depths of greater than

03 inch are possible)

bull less distortion

bull better impact strength This makes it perfect fo

high strength and wear applications (eg

scissors or swords)

Disadvantagesbull Added expense

bull Higher working temperatures

bull Increased time

12 What are the length and diameter of electrode

available in marketElectrodes are available upto 12mm diameter and

450mm long

13 What do you mean by friction welding

It is a solid state welding process wherein coalescence iformed by the heat which is obtained from mechanicall

induced sliding motion between rubbing surface

14 Equation for thermit welding

15 Define the term lsquoelectrodersquo and mention its major

classification

In 983137983154983139 983159983141983148983140983145983150983143 an electrode is used to conduct current

through a workpiece to fuse two pieces togetherDepending upon the process the electrode is either

consumable

16 Why is flux coated on filler rods

17 Importance of flux in arc weldingiv Stabilizes arc

v Reduces spattering

vi Prevent welding seam from rapid cooling

vii Increased deposition efficiency

bull Influence shape of weld bead during solidification

bull Adds alloying element and increases properties

UNIT ndash III

Bulk Deformation Process

1 What is meant by recrystalization temperature



The temperature at which destroyed grains of a crystal

structure are replaced by the new strain free grains

below recrystalization temperature - cold working

Above recrystalization temperature - Hot working

2 Working on the metal lead at room temperature is

considered to be hot working WhyRecrystalization temperature of the lead is - 35degC So

The work happening in lead is above the recrystalisation

temperature So It is considered to be hot working

3 Distinguish between open die forging and closed die

forgingOpen die process

Advantages

-simple economical dies

-useful for small quantities

-wide range of sizes available

-good strength

Limitations

-limited to simple shapes

-final machining necessary

-low production rate

-skilled labour required

Closed die-forging (impression die forging)

-in closed forging hot metal is forced throrsquo the cavities

of die block to take final shape

Advantages

-material utilization is full

-better mech properties

-good dimensional accuracy

-high production rate

Limitations

-high cost of dies

-machining is necessary

4 Classify types of extrusioni Direct

ii Indirect

iii Hydro static

iv Impact

5 In four high roll mills smaller diameter mills as

working mills ndash why

A small roll diameter is advantageous because less roll

is in contact with the material which results in a lower

force and power requirement

The problem with a small roll is a reduction of stiffness

which is overcome using backup rolls These backup

rolls are larger and contact the back side of the smaller

rolls

6 Explain the principle of extrusion7 Define extrusion as manufacturing process

It is a compression forming process in which the wor

metal is forced to flow throrsquo a die opening to produc

desired cross sectional shape

8 Which extrusion process requires more force- Why

Direct extrusion requires more force than indirecextrusion complex cross-section turbulence and Highe

friction results in larger ram force

9 Define the term extrusion ratioExtrusion ratio is defined as the starting cross-sectional

area divided by the cross-sectional area of the final

extrusion

10 Difference between direct and indirect extrusion

Direct Forward Extrusion Indirect Backward Extrusio

Solid ram Hollow ram

Large for required forextrusion process

Small for extrusion process

Hollow parts can be made Cant make hollow objects

Force a

11 What is upset forgingUpset forging increases the diameter of the workpiece

by compressing its length

12 Mention different types of shape rolling operation

bull Blooming rolls

bull Edging rolls

bull Ring Rolling

bull Thread Rolling

13 List out any four parts manufactured using shape

rolling operation



I beams channels railroad screws and se

14 What is sejournet process

983124983144983141 983141983160983156983154983157983155983145983151983150 983152983154983151983139983141983155983155 983159983144983145983139983144 983145983155 983138983137983155983141983140 983138983151983156983144 983151983150

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983137983150983140 983151983150 983137 983155983141983152983137983154983137983156983145983151983150 983138983141983156983159983141983141983150 983156983144983141 983148983157983138983154983145983139983137983156983145983151983150

983139983144983137983149983138983141983154 983159983137983148983148 983137983150983140 983156983144983137983156 983151983142 983156983144983141 983140983145983141 983145983155 983139983137983148983148983141983140 983155983141983146

983152983154983151983139983141983155983155983086

15 What is skew rollingThe rolls are powered and the job is in du

force between metal and roll surface The

the rolls is being zero

16 Why are a number of processes required

barTo reduce the thickness to a greater level

rolling process are used And to get the d

passed through multiple rollers

17 How are seamless tubes producedSeamless tubes are manufactured by pierc

method Round billets up to the plastic st

piercing in a Cross Roll Piercer

18 What are advantage and disadvantage o

Advantages

bull products have structural homogeneity

bull no porosity blow holes voids

bull metal grains are refined

bull better mechanical properties

bull better machining qualities minimum

required

bull relatively smooth surfaced products

bull close dimensional tolerances

bull rapid duplication of products

amless ring

983156983144983141 983157983155983141 983151983142 983137

983149983152983141983154983137983156983157983154983141

983151983142 983156983144983141

983157983154983150983141983156

to frictional

torque is on

to roll a steel

ultiple

sired shape its

e rolling

ge of steel and

forging

etal removal

Limitations

bull high temp results oxidat

bull tooling amp handling costs

bull intricate shapes (as in ca

19 Classify types of forging maForging Presses

-Hydraulic press

-Mechanical Press

-Screw press

20 What is ironing

Ironing is a 983155983144983141983141983156 983149983141983156983137983148 983142983151983154

thins the workpiece in a spec

21 WhFullering i

out sections

convex sha

UNIT

SHEET META

1 What is spring back effort aSpring back is defined as the mo

resume its original position causi

After the applied force is withdr

It can be avoided by

bull Over stretching using V-

bull Coining the edges

2 What is peen forming and wIn this process a mechanical im

balls which are accelerated to a s

directed in a desired pattern

Application- Specific portion of

road and gears To produce honewings

3 What is punching operationPunching is a process in which t

of material from the larger piece 4 Give the differences betwee

If the small removed piece is dis

called punching whereas if the s

useful part and the rest is scrap t

blanking

ion of surface

are high

tings) are not possible

hineForging Hammers

-Gravity drop hammer

-Power drop hammer

-Counter drop hammer

-Helve Hammers

- Trip Hammers

- Level spring

983145983150983143 process that uniforml

ific area

at is fulleringa similar process that thin

of the forging using a

ed die

ndash IV

PROCESSES

d how it is recoveredement of the metal to

ng a decrease in bent angle

wn

type blocks

hat are its applicationsact is produced by steel

pecific velocity and

crank shaft connecting

ycomb panels like aircraft

she punch removes a portio

or a strip of sheet metal punching and blanking

arded the operation is

all removed piece is the

he operation is called



5 What is super plastic forming operationVery fine grains are obtained within certain temperature

ranges amp at low strain rates These alloys can be formed into

complex shapes by super plastic forming Zinc Aluminum

and Titanium has super plastic behavior

6 What are the advantages of rubber pad forming

process


drawing methodWires Tubes to make hydraulic systems and to get

rectangular hexagonal and square shapes

8 What are the common explosives used in explosive

forming method

9 Define the term formability

The capability of sheet metal to be deformed into desiredshape is called formability

10 What do you mean by minimum bend radiusWhile bending outer surface in tension and inner surface is

in compression The minimum radius to which the material

can be bent known as minimum bend radius

11 Explain piercing operationIt is a process by which a hole is cut (or torn) in metal It is

different from punching in that piercing does not generate a

slug Instead the metal is pushed back to form a jagged

flange on the back side of the hole A pierced hole looks

somewhat like a bullet hole in a sheet of metal

12 Why it is necessary to provide proper clearance

between the punch and die in a shearing operationIt allows fracture to meet when break occurs It depends on

type of material Thickness of material Hardness of material

and type of operation

13 Advantage of hydro forming techniqueDeeper draws are obtained compared to other methods It is

due to the pressure around the rubber membrane forces thecup against the punch

14 What is limiting drawing ratioThe volume of material removed from the work per unit

volume of wear is known as drawing ratio

15 Define embossing

This is a process of making raised or projected design

on the surface of the metal with its corresponding relief

on other side

Combination of drawing and bending

16 What is lancing operation that is done on sheet

metalsA shearing operation that cuts an interior section of the

metal without removing the section A lancing operatioleaves an opened metal tab

Notching- A shearing operation that removes a section

from the outer edge of the metal strip or part

Perforating is a piercing operation that involves

punching a large number of closely spaced holes

Fine blanking is a specialized form of blanking where

there is no fracture zone when shearing This is

achieved by compressing the whole part and then an

upper and lower punch extract the blankThis allows th

process to hold very tight tolerances and perhaps

eliminate secondary operations

UNIT ndash V

MANUFACTURING OF PLASTICCOMPONENTS

1 Write the difference between thermo plastic and

thermo setting plastic

Thermo plastic 983124983144983141983154983149983151 983155983141983156983156983145983150983143 983152983148983137983155983156983145983139

983113983156 983155983151983142983156983141983150983155 983138983161 983144983141983137983156983145983150983143 983113983156 983139983137983150983150983151983156 983138983141 983155983151983142983156983141983150 983138983161

983144983141983137983156983145983150983143

983116983145983150983141983137983154 983139983144983137983145983150 983152983151983148983161983149983141983154 983085

983123983156983154983157983139983156983157983154983141

983107983154983151983155983155 983148983145983150983147983141983140 983152983151983148983161983149983141983154

983105983140983140983145983156983145983151983150983137983148 983120983151983148983161983149983141983154983145983162983137983156983145983151983150 991251

983120983154983151983140983157983139983156983145983151983150

983107983151983150983140983141983150983155983137983156983145983151983150

983152983151983148983161983149983141983154983145983162983137983156983145983151983150

983123983151983142983156983141983154 983137983150983140 983148983141983155983155 983155983156983154983151983150983143 983112983137983154983140983141983154 983137983150983140 983155983156983154983151983150983143983141983154

983113983156 983139983137983150 983138983141 983154983141983149983151983157983148983140983141983140 983107983137983150983150983151983156 983154983141983149983151983157983148983140983086

2 Plastic strips are to be converted into 3D objects

Suggest one process and explain

3 What are the characteristics of thermo formingThermoforming process is a process in which a flat

thermoplastic sheet is heated amp deformed into the desired

shape



4 Describe briefly about thin flim blowing

bull Blown film extrusion is a technology th

common method to make plastic films

the packaging industry

bull The process involves extruding a tube o

polymer through a die and inflating to

its initial diameter to form a thin film b

bull This bubble is then collapsed and used

film or can be made into bags

5 Listout materials for processing plastics

Additives1 Plasticizer - improve plastic beh

2 Calalyst - fastup the process

3 Dyes and pigments ndash colour

4 Initiators - initiate the reaction

5 Modifiers - improve mechanical

6 Lubricants - to reduce friction

7 Flame retardents ndash to enhance non- in

8 Solvents - to dissolve fillers an

9 Elastomers - to enhance elastic p

10 Stabilizer - To retard degradati

Fillers ndash economises the quamntity

1 Mica2 Cloth fibre

3 Asbestors

6 What are the advantages of transfer moIn this process thermosetting resin is heat

separate chamber amp then the softened pol

forced into a heated mould where curing

7 What is degree of polymerization

at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs

Polymerization is a process of r

together in a chemical reaction t

degree of polymerization is usu

of monomeric units in a polymer

8 Plastic milk bottle is thermo plastic How could you find

bull Thermoplastics softens wh

soluble in organic solventbull thermo setting plastics are

in organic solvents and mo

organic solvents

9 Adhesives used for bondingEpoxy urethane cyano-acrylic

10 Why screw injection mouldi

than ram type injection mou

In screw injection moulding

into the hopper the resins are

heated reciprocating screw Inused

11 What is parison

bull It is the molten tubular for

Blow Molding machine by

resins

bull This viscous melt resin ca

halves of Blow Molds and

cavity of mould by blowin

12 Calendering processIt is aof pol

contin

throug

that is

then crolls

acting monomer molecule

form polymer chains

ally defined as the number

plastic or thermo setting out

ile heating it Its less brittle

more brittle and insoluble

re brittle and insoluble in

of plasticsilicone

g machine is is better

lding machine

achine pellets are fed

pushed along with the

ram type pellets canrsquot b

made on an Extrusion

extruding thermo plastic

lled Parison is put into two

shaped to the form of

compressed air

rocess in which a hot masmer is fashioned into a

ous sheet by passage

h a system of heated rolls

a calender The sheet is

oled and wound up into



b Mold is not reusable

c Many processing steps are required

14 What is core and its requirementCore

It a device used in casting and molding processes to


Core Prints

It is an added projection on the pattern and it formsa seat in the mold on which the sand core rests during

pouring of the mold

Core Chaplets

Additional support provided at the mold cavity

15 Differentiate the terms lsquomouldrsquo and lsquocorersquo Mould

It is the cavity of the required shape made in

moulding sand or in other material

Core

It is device used in casting and molding processes to


16 What is core ventingA vent used for the release of air or sometimes gas in a

mold or core Slots or screen act as the vent and are used

in such a way that air or gas built up within a mold or

core is permitted to escape

17 Explain the term fettling

Fettling is cleaning of metal casting It involvesa) Removal of dry sand cores

b) Removal of gates and risers

c) Removal of unwanted metal projection and finsd) Removal of adhered sand and oxide scale

1 Wire brushing

2 Tumbling

3 Sand blasting

4 Shot Blasting5 Hydro blasting

6 Pickling

UNIT ndash II

JOINING PROCESS

1 What are the advantages of AC equipments over DC

machines in arc welding

2 Why is the flux used in soldering and brazing

a Dissolve oxides from the surfaces to be joined

b Reduce surface tension of molten filler metal ieincreasing its wetting action or spreadability

c

Protect the surface from oxidation during joiningoperation

i Solder Fluxes- Zinc chloride ammoniumchloride rosin

ii Brazing flux - borates fluorides chlorides

boraxamp boric acid

3 List out any four arc welding equipmentsConsumable

i Shielded Metal Arc Weldingii Submerged Arc Welding

iii

Gas Metal Arc Weldingiv Flux-Cored Arc Welding

v Electro-gas Weldingvi Electro-slag welding

Non Consumable

vii Gas Tungsten Arc Welding

viii Plasma Arc Weldingix Carbon Arc Welding

4 What is the principle of resistant weldingApply force and current through electrodes contacted

metal parts to be welded and resistance heat is

generated at the interface of metal parts and makes a

nugget resulting in melt joint

Though a large current flows there is no danger of an

electric shock because only low voltage is impressed










(ie heat)




welding is used


thick















nozzle as a flame





ii Oxidizing Flame-






O2 C2H2 = 085 to 095

Advantage






scissors or swords)



bull Increased time



450mm long






classification



consumable








UNIT ndash III















Advantages




-good strength

Limitations








Advantages





Limitations

-high cost of dies



ii Indirect

iii Hydro static

iv Impact









rolls










extrusion







Force a




bull Blooming rolls

bull Edging rolls

bull Ring Rolling

bull Thread Rolling


rolling operation





983124983144983141 983141983160983156983154983157983155983145983151983150 983152983154983151983139983141983155983155 983159983144983145983139983144 983145983155 983138983137983155983141983140 983138983151983156983144 983151983150

983148983157983138983154983145983139983137983150983156 983145983150 983137 983158983145983155983139983151983157983155 983139983151983150983140983145983156983145983151983150 983137983156 983141983160983156983154983157983155983145983151983150 983156

983137983150983140 983151983150 983137 983155983141983152983137983154983137983156983145983151983150 983138983141983156983159983141983141983150 983156983144983141 983148983157983138983154983145983139983137983156983145983151983150

983139983144983137983149983138983141983154 983159983137983148983148 983137983150983140 983156983144983137983156 983151983142 983156983144983141 983140983145983141 983145983155 983139983137983148983148983141983140 983155983141983146

983152983154983151983139983141983155983155983086












Advantages






required




amless ring

983156983144983141 983157983155983141 983151983142 983137

983149983152983141983154983137983156983157983154983141

983151983142 983156983144983141

983157983154983150983141983156

to frictional

torque is on

to roll a steel

ultiple

sired shape its

e rolling

ge of steel and

forging

etal removal

Limitations





-Hydraulic press

-Mechanical Press

-Screw press

20 What is ironing

Ironing is a 983155983144983141983141983156 983149983141983156983137983148 983142983151983154


21 WhFullering i

out sections

convex sha

UNIT

SHEET META

















blanking

ion of surface

are high


hineForging Hammers


-Power drop hammer


-Helve Hammers

- Trip Hammers

- Level spring


ific area



ed die

ndash IV

PROCESSES



wn

type blocks

















process





forming method



















15 Define embossing



on other side















UNIT ndash V




Thermo plastic 983124983144983141983154983149983151 983155983141983156983156983145983150983143 983152983148983137983155983156983145983139

983113983156 983155983151983142983156983141983150983155 983138983161 983144983141983137983156983145983150983143 983113983156 983139983137983150983150983151983156 983138983141 983155983151983142983156983141983150 983138983161

983144983141983137983156983145983150983143

983116983145983150983141983137983154 983139983144983137983145983150 983152983151983148983161983149983141983154 983085

983123983156983154983157983139983156983157983154983141

983107983154983151983155983155 983148983145983150983147983141983140 983152983151983148983161983149983141983154

983105983140983140983145983156983145983151983150983137983148 983120983151983148983161983149983141983154983145983162983137983156983145983151983150 991251

983120983154983151983140983157983139983156983145983151983150

983107983151983150983140983141983150983155983137983156983145983151983150

983152983151983148983161983149983141983154983145983162983137983156983145983151983150

983123983151983142983156983141983154 983137983150983140 983148983141983155983155 983155983156983154983151983150983143 983112983137983154983140983141983154 983137983150983140 983155983156983154983151983150983143983141983154

983113983156 983139983137983150 983138983141 983154983141983149983151983157983148983140983141983140 983107983137983150983150983151983156 983154983141983149983151983157983148983140983086





shape
























1 Mica2 Cloth fibre

3 Asbestors





at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs









organic solvents







11 What is parison



resins





contin

throug

that is

then crolls


form polymer chains






of plasticsilicone


lding machine








compressed air















(ie heat)




welding is used


thick















nozzle as a flame





ii Oxidizing Flame-






O2 C2H2 = 085 to 095

Advantage






scissors or swords)



bull Increased time



450mm long






classification



consumable








UNIT ndash III















Advantages




-good strength

Limitations








Advantages





Limitations

-high cost of dies



ii Indirect

iii Hydro static

iv Impact









rolls










extrusion







Force a




bull Blooming rolls

bull Edging rolls

bull Ring Rolling

bull Thread Rolling


rolling operation





983124983144983141 983141983160983156983154983157983155983145983151983150 983152983154983151983139983141983155983155 983159983144983145983139983144 983145983155 983138983137983155983141983140 983138983151983156983144 983151983150

983148983157983138983154983145983139983137983150983156 983145983150 983137 983158983145983155983139983151983157983155 983139983151983150983140983145983156983145983151983150 983137983156 983141983160983156983154983157983155983145983151983150 983156

983137983150983140 983151983150 983137 983155983141983152983137983154983137983156983145983151983150 983138983141983156983159983141983141983150 983156983144983141 983148983157983138983154983145983139983137983156983145983151983150

983139983144983137983149983138983141983154 983159983137983148983148 983137983150983140 983156983144983137983156 983151983142 983156983144983141 983140983145983141 983145983155 983139983137983148983148983141983140 983155983141983146

983152983154983151983139983141983155983155983086












Advantages






required




amless ring

983156983144983141 983157983155983141 983151983142 983137

983149983152983141983154983137983156983157983154983141

983151983142 983156983144983141

983157983154983150983141983156

to frictional

torque is on

to roll a steel

ultiple

sired shape its

e rolling

ge of steel and

forging

etal removal

Limitations





-Hydraulic press

-Mechanical Press

-Screw press

20 What is ironing

Ironing is a 983155983144983141983141983156 983149983141983156983137983148 983142983151983154


21 WhFullering i

out sections

convex sha

UNIT

SHEET META

















blanking

ion of surface

are high


hineForging Hammers


-Power drop hammer


-Helve Hammers

- Trip Hammers

- Level spring


ific area



ed die

ndash IV

PROCESSES



wn

type blocks

















process





forming method



















15 Define embossing



on other side















UNIT ndash V




Thermo plastic 983124983144983141983154983149983151 983155983141983156983156983145983150983143 983152983148983137983155983156983145983139

983113983156 983155983151983142983156983141983150983155 983138983161 983144983141983137983156983145983150983143 983113983156 983139983137983150983150983151983156 983138983141 983155983151983142983156983141983150 983138983161

983144983141983137983156983145983150983143

983116983145983150983141983137983154 983139983144983137983145983150 983152983151983148983161983149983141983154 983085

983123983156983154983157983139983156983157983154983141

983107983154983151983155983155 983148983145983150983147983141983140 983152983151983148983161983149983141983154

983105983140983140983145983156983145983151983150983137983148 983120983151983148983161983149983141983154983145983162983137983156983145983151983150 991251

983120983154983151983140983157983139983156983145983151983150

983107983151983150983140983141983150983155983137983156983145983151983150

983152983151983148983161983149983141983154983145983162983137983156983145983151983150

983123983151983142983156983141983154 983137983150983140 983148983141983155983155 983155983156983154983151983150983143 983112983137983154983140983141983154 983137983150983140 983155983156983154983151983150983143983141983154

983113983156 983139983137983150 983138983141 983154983141983149983151983157983148983140983141983140 983107983137983150983150983151983156 983154983141983149983151983157983148983140983086





shape
























1 Mica2 Cloth fibre

3 Asbestors





at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs









organic solvents







11 What is parison



resins





contin

throug

that is

then crolls


form polymer chains






of plasticsilicone


lding machine








compressed air


















Advantages




-good strength

Limitations








Advantages





Limitations

-high cost of dies



ii Indirect

iii Hydro static

iv Impact









rolls










extrusion







Force a




bull Blooming rolls

bull Edging rolls

bull Ring Rolling

bull Thread Rolling


rolling operation





983124983144983141 983141983160983156983154983157983155983145983151983150 983152983154983151983139983141983155983155 983159983144983145983139983144 983145983155 983138983137983155983141983140 983138983151983156983144 983151983150

983148983157983138983154983145983139983137983150983156 983145983150 983137 983158983145983155983139983151983157983155 983139983151983150983140983145983156983145983151983150 983137983156 983141983160983156983154983157983155983145983151983150 983156

983137983150983140 983151983150 983137 983155983141983152983137983154983137983156983145983151983150 983138983141983156983159983141983141983150 983156983144983141 983148983157983138983154983145983139983137983156983145983151983150

983139983144983137983149983138983141983154 983159983137983148983148 983137983150983140 983156983144983137983156 983151983142 983156983144983141 983140983145983141 983145983155 983139983137983148983148983141983140 983155983141983146

983152983154983151983139983141983155983155983086












Advantages






required




amless ring

983156983144983141 983157983155983141 983151983142 983137

983149983152983141983154983137983156983157983154983141

983151983142 983156983144983141

983157983154983150983141983156

to frictional

torque is on

to roll a steel

ultiple

sired shape its

e rolling

ge of steel and

forging

etal removal

Limitations





-Hydraulic press

-Mechanical Press

-Screw press

20 What is ironing

Ironing is a 983155983144983141983141983156 983149983141983156983137983148 983142983151983154


21 WhFullering i

out sections

convex sha

UNIT

SHEET META

















blanking

ion of surface

are high


hineForging Hammers


-Power drop hammer


-Helve Hammers

- Trip Hammers

- Level spring


ific area



ed die

ndash IV

PROCESSES



wn

type blocks

















process





forming method



















15 Define embossing



on other side















UNIT ndash V




Thermo plastic 983124983144983141983154983149983151 983155983141983156983156983145983150983143 983152983148983137983155983156983145983139

983113983156 983155983151983142983156983141983150983155 983138983161 983144983141983137983156983145983150983143 983113983156 983139983137983150983150983151983156 983138983141 983155983151983142983156983141983150 983138983161

983144983141983137983156983145983150983143

983116983145983150983141983137983154 983139983144983137983145983150 983152983151983148983161983149983141983154 983085

983123983156983154983157983139983156983157983154983141

983107983154983151983155983155 983148983145983150983147983141983140 983152983151983148983161983149983141983154

983105983140983140983145983156983145983151983150983137983148 983120983151983148983161983149983141983154983145983162983137983156983145983151983150 991251

983120983154983151983140983157983139983156983145983151983150

983107983151983150983140983141983150983155983137983156983145983151983150

983152983151983148983161983149983141983154983145983162983137983156983145983151983150

983123983151983142983156983141983154 983137983150983140 983148983141983155983155 983155983156983154983151983150983143 983112983137983154983140983141983154 983137983150983140 983155983156983154983151983150983143983141983154

983113983156 983139983137983150 983138983141 983154983141983149983151983157983148983140983141983140 983107983137983150983150983151983156 983154983141983149983151983157983148983140983086





shape
























1 Mica2 Cloth fibre

3 Asbestors





at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs









organic solvents







11 What is parison



resins





contin

throug

that is

then crolls


form polymer chains






of plasticsilicone


lding machine








compressed air










983124983144983141 983141983160983156983154983157983155983145983151983150 983152983154983151983139983141983155983155 983159983144983145983139983144 983145983155 983138983137983155983141983140 983138983151983156983144 983151983150

983148983157983138983154983145983139983137983150983156 983145983150 983137 983158983145983155983139983151983157983155 983139983151983150983140983145983156983145983151983150 983137983156 983141983160983156983154983157983155983145983151983150 983156

983137983150983140 983151983150 983137 983155983141983152983137983154983137983156983145983151983150 983138983141983156983159983141983141983150 983156983144983141 983148983157983138983154983145983139983137983156983145983151983150

983139983144983137983149983138983141983154 983159983137983148983148 983137983150983140 983156983144983137983156 983151983142 983156983144983141 983140983145983141 983145983155 983139983137983148983148983141983140 983155983141983146

983152983154983151983139983141983155983155983086












Advantages






required




amless ring

983156983144983141 983157983155983141 983151983142 983137

983149983152983141983154983137983156983157983154983141

983151983142 983156983144983141

983157983154983150983141983156

to frictional

torque is on

to roll a steel

ultiple

sired shape its

e rolling

ge of steel and

forging

etal removal

Limitations





-Hydraulic press

-Mechanical Press

-Screw press

20 What is ironing

Ironing is a 983155983144983141983141983156 983149983141983156983137983148 983142983151983154


21 WhFullering i

out sections

convex sha

UNIT

SHEET META

















blanking

ion of surface

are high


hineForging Hammers


-Power drop hammer


-Helve Hammers

- Trip Hammers

- Level spring


ific area



ed die

ndash IV

PROCESSES



wn

type blocks

















process





forming method



















15 Define embossing



on other side















UNIT ndash V




Thermo plastic 983124983144983141983154983149983151 983155983141983156983156983145983150983143 983152983148983137983155983156983145983139

983113983156 983155983151983142983156983141983150983155 983138983161 983144983141983137983156983145983150983143 983113983156 983139983137983150983150983151983156 983138983141 983155983151983142983156983141983150 983138983161

983144983141983137983156983145983150983143

983116983145983150983141983137983154 983139983144983137983145983150 983152983151983148983161983149983141983154 983085

983123983156983154983157983139983156983157983154983141

983107983154983151983155983155 983148983145983150983147983141983140 983152983151983148983161983149983141983154

983105983140983140983145983156983145983151983150983137983148 983120983151983148983161983149983141983154983145983162983137983156983145983151983150 991251

983120983154983151983140983157983139983156983145983151983150

983107983151983150983140983141983150983155983137983156983145983151983150

983152983151983148983161983149983141983154983145983162983137983156983145983151983150

983123983151983142983156983141983154 983137983150983140 983148983141983155983155 983155983156983154983151983150983143 983112983137983154983140983141983154 983137983150983140 983155983156983154983151983150983143983141983154

983113983156 983139983137983150 983138983141 983154983141983149983151983157983148983140983141983140 983107983137983150983150983151983156 983154983141983149983151983157983148983140983086





shape
























1 Mica2 Cloth fibre

3 Asbestors





at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs









organic solvents







11 What is parison



resins





contin

throug

that is

then crolls


form polymer chains






of plasticsilicone


lding machine








compressed air













process





forming method



















15 Define embossing



on other side















UNIT ndash V




Thermo plastic 983124983144983141983154983149983151 983155983141983156983156983145983150983143 983152983148983137983155983156983145983139

983113983156 983155983151983142983156983141983150983155 983138983161 983144983141983137983156983145983150983143 983113983156 983139983137983150983150983151983156 983138983141 983155983151983142983156983141983150 983138983161

983144983141983137983156983145983150983143

983116983145983150983141983137983154 983139983144983137983145983150 983152983151983148983161983149983141983154 983085

983123983156983154983157983139983156983157983154983141

983107983154983151983155983155 983148983145983150983147983141983140 983152983151983148983161983149983141983154

983105983140983140983145983156983145983151983150983137983148 983120983151983148983161983149983141983154983145983162983137983156983145983151983150 991251

983120983154983151983140983157983139983156983145983151983150

983107983151983150983140983141983150983155983137983156983145983151983150

983152983151983148983161983149983141983154983145983162983137983156983145983151983150

983123983151983142983156983141983154 983137983150983140 983148983141983155983155 983155983156983154983151983150983143 983112983137983154983140983141983154 983137983150983140 983155983156983154983151983150983143983141983154

983113983156 983139983137983150 983138983141 983154983141983149983151983157983148983140983141983140 983107983137983150983150983151983156 983154983141983149983151983157983148983140983086





shape
























1 Mica2 Cloth fibre

3 Asbestors





at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs









organic solvents







11 What is parison



resins





contin

throug

that is

then crolls


form polymer chains






of plasticsilicone


lding machine








compressed air





























1 Mica2 Cloth fibre

3 Asbestors





at is the most

specially for

f molten

everal times

bble

s a lay-flat

avior

l property

flammability

d plasticizer

roperty

n

ldinged in a

mer is

occurs









organic solvents







11 What is parison



resins





contin

throug

that is

then crolls


form polymer chains






of plasticsilicone


lding machine








compressed air






Documents

FMP Short Answers