GATE Questions & Answers of Fundamentals of Hot and Cold Working Processes

What is the Weightage of Fundamentals of Hot and Cold Working Processes in GATE Exam?

Total 3 Questions have been asked from Fundamentals of Hot and Cold Working Processes topic of Casting, Forming and Joining Processes subject in previous GATE papers. Average marks 1.67.

A strip of 120 mm width and 8 mm thickness is rolled between two 300 mm-diameter rolls to get a strip of 120 mm width and 7.2 mm thickness. The speed of the strip at the exit is 30 m/min. There is no front or back tension. Assuming uniform roll pressure of 200 MPa in the roll bite and 100% mechanical efficiency, the minimum total power (in kW) required to drive the two rolls is____________

A 300 mm thick slab is being cold rolled using roll of 600 mm diameter. If the coefficient of friction is 0.08, the maximum possible reduction (in mm) is __________

Match the following products with preferred manufacturing process:

Product Process
P Rails 1 Blow molding
Q Engine crankshaft 2 Extrusion
R Aluminium channels 3 Forging
S PET water bottles 4 Rolling