Define (1) Notching (2) Nibbling (3) Slitting, for pres work.
[3 marks]State difference between compound and progressive dies.
[4 marks]Give list of methods used for calculation of extrusion load and Explain any one of them in brief with neat sketch.
[7 marks]What do you understand by shear on punch and die?
[3 marks]Discuss various rolling defects.
[4 marks]Discuss stresses developed in deep drawing process with neat sketch.
[7 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]Discuss direct and indirect extrusion with neat sketch.
[4 marks]What do you understand about anisotropy of sheet metal? How do you measure it?
[7 marks]What are the benefits of hydrostatics extrusion process?
[3 marks]Briefly explain Forming limit curve with a neat sketch.
[4 marks]Explain various operations performed on sheet-metal press machines.
[7 marks]Discuss on materials used for making wire drawing dies.
[3 marks]Explain in detail Two-Dimensional Mohr's circle method for stress analysis.
[4 marks]Discuss analysis of strip rolling.
[7 marks]Why is friction essential in the forging process?
[3 marks]How do you represent strain hardening effect?
[4 marks]Describe Upper bound and Lower bound theorem in metal forming.
[7 marks]Define: (i) Dry drawing (ii) Wet drawing (iii) Tube drawing.
[3 marks]Explain spring back effect in bending process.
[4 marks]State and prove Hencky’s first theorem for Slip Lines with usual notations.
[7 marks]Define: (i) Hot forming (ii) Cold forming (iii) Worm forming.
[3 marks]Describe effects of work hardening on mechanical properties of material.
[4 marks]Explain various forging operations with neat sketches.
[7 marks]