Explain need of metal forming processes in industries.
[3 marks]Give Classification of Metal Forming Processes and Explain any one.
[4 marks]Define following terms:(i)Hot forming(ii)Cold forming(iii)Yield strength(iv)Flow stress(v)Strain rate(vi)Principal stress(vii)Plasticity.
[7 marks]Explain Briefly Two Dimensional Mohr’s stress circles.
[3 marks]Sketch a cross section of a tungsten carbide wire drawing die and show its different portion and their geometry.
[4 marks]Prove Hencky’s first theorem for Slip Lines with usual notations.
[7 marks]Explain typical arrangements of roll & roll mills with neat sketches.
[7 marks]Differentiate open die forging and closed die forging.
[3 marks]Explain velocity discontinuities along slip lines with neat sketch.
[4 marks]Explain upset forging process with neat sketch.
[7 marks]Explain a Forming Limit diagram.
[3 marks]Discuss direct and indirect extrusion with neat sketch.
[4 marks]What is the principle of magnetic pulse forming? Describe the types of components that may be made by this process.
[7 marks]Define (i) dry drawing (ii) wet drawing (iii) tube drawing
[3 marks]Why lubricants use in extrusion process?
[4 marks]Explain friction board drop hammer for forging.
[7 marks]Define angle of bite and discuss its effect in rolling process.
[3 marks]Differentiates between Blanking and Punching operations. Page 1 of
[2 marks]How does hydrostatic pressure affect the yield strength of metal?
[7 marks]What do you understand by spring back in press working?
[3 marks]Why friction measurement is necessary in forming process?
[4 marks]Explain various operations performed on sheet-metal press machine.
[7 marks]Discuss Forging defects.
[3 marks]How is contact length affected by elastic deformation of rolls?
[4 marks]With neat sketch explain the steps of close die forging process. Page 2 of
[2 marks]