Explain need of metal forming processes in industries.
[3 marks]Differentiate between cold forming, hot forming and warm forming.
[4 marks]Explain electro-hydraulic forming process also write its advantages and disadvantages.
[7 marks]Give classification of Rolling Mills.
[4 marks]Define (i) dry drawing (ii) wet drawing (iii) tube drawing.
[3 marks]Explain VonMises & Tresca theory of yielding.
[7 marks]Describe the stress strain relations for rigid perfectly plastic material.
[7 marks]Explain a Forming Limit diagram.
[3 marks]Explain Anistrophy in sheet metal.
[4 marks]Derive the formula for Rolling Load using Slab Method with usual notations.
[7 marks]Define angle of bite and discuss its effect in rolling process.
[3 marks]Differentiate direct and indirect extrusion process.
[4 marks]What do you understand by shear on punch and die? Discuss the relative advantages of providing shear on punch and die.
[7 marks]What is upset forging?
[3 marks]How is impression die forging different from closed die forging?
[4 marks]Explain friction board drop hammer for forging.
[7 marks]What are the benefits of hydrostatics extrusion process?
[3 marks]Why lubricants use in extrusion process?
[4 marks]What are the different methods of tube drawing? Describe the salient feature of each method.
[7 marks]What do you understand by spring back in press working?
[3 marks]Discuss on materials used for making wire drawing dies.
[4 marks]How does hydrostatic pressure affect the yield strength of metal?
[7 marks]Define (1) Notching (2) Nibbling (3) Slitting, for press work.
[3 marks]Why friction measurement is necessary in forming process?
[4 marks]Explain various operations performed on sheet-metal press machine.
[7 marks]