UNIT 4 MANUFACTURING PROCESS METAL FORMING PROCESS Prof

METAL FORMING PROCESS TYPES q. Forging q. Rolling q. Extrusion q. Wire drawing q.

FORGING Is the process in which the metal or alloy is first heated and

CLASSIFICATION OF FORGING PROCESS Forging (based on working temperature ) Hot forging Or Hot

HOT FORGING In this process the deformation of a material or workpiece in to

ADVANTAGES Ø big amount of forming is possible, Ø lower forces required, Ø forming

DISADVANTAGES Ø lower Ø accuracy and surface finish, higher production cost, Ø shorter tool

COLD FORGING AND COLD WORKING Ø In this process the deformation of a material

ADVANTAGES Ø better accuracy, Ø better surface finish, Ø high part, Ø no strength

DISADVANTAGES Ø higher forces and power, Ø limitations Ø some to the amount of

CLASSIFICATION OF FORGING PROCESS Forging (based on types of dies) Open die forging process

CLASSIFICATION OF FORGING PROCESS Forging (based on mode of application of compressive force )

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UNIT- 4 MANUFACTURING PROCESS METAL FORMING PROCESS Prof. Kiran Gore

METAL FORMING PROCESS TYPES q. Forging q. Rolling q. Extrusion q. Wire drawing q. Deep drawing q. Bending q. A metal in hot or cold condition, is plastically deformed. q No material is removed and wasted but only displaced & deformed in to desired shape

FORGING Is the process in which the metal or alloy is first heated and then plastically deformed to the desired size & shape by the application of compressive force by using hand hammer or a power hammer

WORKING PRINCIPLE OF FORGING PROCESS

F O R G I N G P R E S S

FORGING PROCESS

C R A N K S H A F T

CONNECTING ROD

ROCKER ARMS

GEAR BLANK

LEVERS

AIRCRAFT COMPONENTS

SPARE PARTS

CLASSIFICATION OF FORGING PROCESS Forging (based on working temperature ) Hot forging Or Hot working Cold forging Or Cold working

HOT FORGING In this process the deformation of a material or workpiece in to predetermined shape is carried out at a temperature greater than its recrystallization temperature

HOT FORGING

ADVANTAGES Ø big amount of forming is possible, Ø lower forces required, Ø forming ductility, Ø no of and materials work hardening power are with low

DISADVANTAGES Ø lower Ø accuracy and surface finish, higher production cost, Ø shorter tool life

COLD FORGING AND COLD WORKING Ø In this process the deformation of a material workpiece in predetermined shape carried out at or to is a temperature lower than its recrystallization temperature Ø Usually at room temperature

ADVANTAGES Ø better accuracy, Ø better surface finish, Ø high part, Ø no strength and hardness of the heating is required

DISADVANTAGES Ø higher forces and power, Ø limitations Ø some to the amount of forming, material are not capable of cold working.

CLASSIFICATION OF FORGING PROCESS Forging (based on types of dies) Open die forging process Closed die forging process

OPEN DIE FORGING PROCESS

CLOSED DIE FORGING

CLASSIFICATION OF FORGING PROCESS Forging (based on mode of application of compressive force ) Hand forging process Press forging process

HAND FORGING PROCESS

PRESS FORGING