Download GTU BE/B.Tech 2018 Winter 8th Sem Old 182101 Metal Working Processes Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem Old 182101 Metal Working Processes Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 182101 Date: 19/11/2018

Subject Name: Metal Working Processes

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Classify and differentiate metal working processes. 07
(b) Compare open die and close die forging. Also explain functions of flash in
close die forging.
07

Q.2 (a) Discuss recovery, recrystallization and grain growth after cold working. 07
(b) Derive forging load equation by plane strain forging analysis. 07
OR
(b) For rolling explain: Bloom, Billet, Slab, Plate, Sheet, Strip and Angle of Bite. 07

Q.3 (a) Discuss defects in rolling process with their causes and remedies. 07
(b) Enlist forging defects and give their causes and remedies. 07
OR
Q.3 (a) Discuss rolling variables. 07
(b) What is extrusion? Explain different types of extrusion process and role of
lubricant.
07

Q.4 (a) Discuss the residual stresses in metal working processes. 07
(b) List the factors that determine temperature of work-piece in metal working and
get equation for it.
07
OR
Q.4 (a) List sheet metal working operations and briefly discuss shearing and embossing. 07
(b) Explain different forging operations with neat sketch.

07

Q.5 (a) Write note on optical pyrometer. 07
(b) Derive equation for total extrusion force using extrusion process analysis. 07
OR

Q.5 (a) With neat sketch explain different rolling mill. 07
(b) Write note on wire drawing. 07



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