Metal Forming Technology — Summer 2018

Classify the Metal Forming Processes. Explain any one of them.

Explain the concept of Strain hardening.

Differentiate between Cold Working and Hot Working of metals and explain with their advantages and disadvantages.

What is the significance of Recrystallization temperature in metal working?

Explain various factors affecting Plastic deformation.

With the help of schematic diagram explain Slip and Twinning mechanism that cause plastic deformations in metals and alloys.

Explain various yield criteria in metal forming process & highlight their significance. AND stating advantages and disadvantages.

Explain the Rolling defects with sketch.

Explain Two-High, Three-High & Four-High Rolling Mills with a neat sketch.

Explain open die & closed die Forging process with a neat sketch

Explain the principle of Forging and classify the types of Forging process.

Describe various forging defects.

Asteel plate 20 mm thick is to be rolled to 14 mm in a four high mill having roll diameter 480 mm. If yield stress is 12 Kg/mm2 Determine:

Angle of bite

Coefficient of friction if this is the maximum reduction possible.

Sketch and explain Rotary swaging process.

Explain the Hydrostatic Extrusion with a neat sketch.

Write short notes on

Ironing

Spinning

Cupping

Piercing

How the forging process is advantageous when compared to casting process.1

Describe the piercing method of making seamless tubes.

What is Bending? Explain various types of Bending with a neat sketch.

Classify the Drawing processes. Differentiate Tube Drawing Process and Wire Drawing process with a neat sketch.

Sketch and explain Deep Drawing process.

Define following terms 1. Blanking 2. Punching 3. Notching 4. Lancing

Describe Magnetic Pulse Forming process with a neat sketch? Explain advantages, limitations and applications of the above process.