Forming Technology Forging: Hot working, cold working – advantages of hot working and cold working– hot working operations – rolling, forging, smith forging, drop forging, upset forging, press forging – roll forging. Press Working: Types of presses - mechanical and hydraulic presses - press tools and accessories - press working operations - bending operations - angle bending - channel bending – curling – drawing - shearing operations - blanking, piercing, trimming – notching – lancing.

1. Forming technology
Unit -III

2. Co :Identify and select proper manufacturing process for a specific
component

3. Forming
Forming, metal forming, is the metalworking process of fashioning metal parts and objects
through mechanical deformation; the workpiece is reshaped without adding or removing material,
and its mass remains unchanged.

5. Recrystallization temperature is a particular temperature point below the melting point of a metal (or material).
Usually, metals, in microscopic scale are made up of grain like particles.
At recrystallization temperature, if you impart enough force, you can easily succeed to change the size and shape of
these grains

6. Forging
To make a component by using compressive or impact load
Classification:
1. Smith forging ---- hand forging----power forging
2. Impressive die forging---drop forging---press forging---upset forging
3. Roll forging

7. Smith Forging
• Smith forging is also called flat die and open die forging. It includes
the broad field of forging work produced between flat faced dies and
possibly supplemented by stock tooling.
• The final shape of the forging depends on the skill of the smith for
size and shape.
• Smith forging produces work pieces of lesser accuracy as compared
to impression or closed die forging.
• Tooling is simple, inexpensive and allows the production of a large
variety of shapes.

8. Almost all metals and alloys can be forged.
•Ferrous alloys
•Aluminum alloys
•Brass and Bronze
•Copper alloys
•Titanium alloys

9. Impression Die Forging
• Impression die forging makes use of cavities in specially prepared dies to
produce forged shapes in large quantities.
• Impression die forging is mainly of 3 types:
• Drop forging
• Press forging
• Machine forging or upset forging

10. Press forging & drop forging
Drop Forging – With drop forging (also called hammer forging), the metal billet is inserted into the die and
hammered with multiple blows.
Press Forging – Press forging uses a slower and continuous pressure to shape metal into a certain shape.

11. Type of presses
Manually operated presses
Power operated presses
A. Mechanical press
B. Hydraulic press
C. Pnueumatic press

12. Types of drive
Crank and connecting rod drive
Eccentric drive
Knuckle joint drive
Cam drive
Toggle drive
Screw drive
Rack and pinion drive rotational motional change into linear motion

16. Press working operation
Bending operation
Angle bending-----Curling----Roll forming----Seaming----Plate bending
Shear operation
Punching----blanking-----cutting off
Parting---notching---slitting---lancing---triming----shaving
Bending shear
Operation operation

17. Angle bending curling Seaming

19. Powder metallurgy
Powder metallurgy is a metal-forming process performed by heating compacted metal powders to just
below their melting points.
Steps involved in powder metallurgy process
● Powder formation
● Compacting
● sintering

20. Powder formation

21. ELECTROLYTIC DEPOSITION

22. sintering
Sintering is a process were green compact strength increased and required
mechanical properties can obtained
Basically melting point of powder metal are between 70 c to 90c .
This heating process done in vacuum chamber.

23. sintering