Manufacturing Processes

A-Choose the most suitable answer: ( 7 marks) 1. The epoxy polymer can be used in manufacturing the following products: (a) sealers (b) crankshaft (c) primers, (d) pistons (e) adhesives ( 2 marks) 2. Because of uncontrolled process speeds and temperatures, this may lead to bamboo shape of drawn wire during process. (c) continuous casting (d) roll piercing (a) hydrostatic extrusion (b) DLD 3. In hydrostatic extrusion, the range of hydrostatic pressures can be ...... (2 marks) (a) 20004000MPa (b) 10003000MPa (c) 5001000MPa (d) 50006000MPa (2 marks) 4. The ...... process can be used to manufacture a seamless (smooth and without seams or obvious joins) thick-walled tubes. (a) thread rolling (b) ring rolling (c) roll piercing (d) shape rolling (1 mark) -Complete the following statements: (7 marks) Centrifuge casting can be used to manufacture and ...... ( 2 marks) For successful drawing process, the d must be less than (1 mark) The rolled threads are better than cut threads due to grain flow lines are..... ( 2 marks) The planetary rolling mills are capable of bringing thickness reduction to the tune of .... as against in conventional rolling mills. (2 marks) nswer the following statements by short answers (answer two only): ( 6 marks) lat is the difference between shot peening and sandblasting? (3 marks) at is the condition to produce tubular castings having uniform wall thickness in zontal true centrifugal casting? (3 marks) at are types of Dieless drawing processes? (3 marks) swer A or B: (10 marks) on-continuous dieless drawing process for copper bar as shown in Fig. (1), the al bar diameter d0=25mm, the proposed final diameter d1=15mm and 0=15mm/s. late: (1) area reduction RA,(2) drawing velocity v1. (10 marks)