Metal Forming Technology — Summer 2021

Define Recrystallisation describe the factors affecting to Recrystallisation Temperature.

Differentiate Hot and Cold working processes.

Explain slip and twinning mechanics of plastic deformations with neat sketch.

Define forgeability and list out the factors affecting to the degree of forgeability.

Explain the effect of clearance (between punch and die) and punch speed on the deformation zone with neat sketch.

Describe various defects in rolled product with sketch and state their causes and remedies.

Explain the procedure of roll pass design with schematic diagram.

Compare direct and indirect extrusion with neat sketch.

Explain planetary rolling mill with neat sketch. What is the function of back-up rolls?

Explain the technique of producing seamless cylinders and tubes by hot cupping and drawing.

Explain hydrostatic extrusion process with its application.

Explain following terminology in the context of rolling. (i) Neutral plane (ii) Backward slip (iii) Forward slip (iv) Angle of Bite

Explain Impact extrusion process with neat sketch and give its application.

Explain wire drawing process briefly.

Describe briefly tube or pipe drawing with the use of moving mandrel.

Explain the Force Analysis in forging with neat sketch.

Discuss about deep drawing process.

Explain Wire Drawing operation with schematic diagram.

Explain Cold Heading and Rotary Swaging processes.

Explain Spring back phenomenon in sheet metal forming.

Discuss about stretch forming process.

Explain the principle of metal spinning with neat sketch. Write its advantages, disadvantages and applications.

Explain Press Brake forming process briefly.

Explain V-bending and Edge bending with simple diagram.

Discuss the process steps involved in high energy rate forming of metals and list out its advantages, limitations and applications