VTU Mechanical Engineering (Semester 3)
Manufacturing Process 1
January 2014
Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) List and briefly explain the different steps involved in a casting process.
8 M
1 (b) Discuss in detail the different materials used in making a pattern.
6 M
1 (c) Briefly discuss the importance of binders and additives used in sand moulding.
6 M

2 (a) List the the type of modulating sand. Discuss the desirable properties of moulding sand.
8 M
2 (b) With neat sketch, explain jolt type moulding machine.
7 M
2 (c) List casting defects. Discuss any two.
5 M

3 (a) With neat sketches, describe the shell moulding process. List advantages of the process.
10 M
3 (b) What is die-casting? With a neat and labeled sketch, explain cold chamber diecasting process.
10 M

4 (a) With neat sketch, show the construction details of a Cupola furnace. Also indicate different zones and write the reactions taking place in each of the zones.
10 M
4 (b) With neat sketch, explain the working of a direct arc electric furnace.
10 M

5 (a) Explain the following, with neat sketches:
(i) Submerged arc welding
(ii) Oxy-acetylene welding.
and their field of applications.
10 M
5 (b) With neat sketch, explain forward and backward welding methods.
10 M

6 (a) With neat sketches, explain the following:
(i) Seam welding
(ii) Projection welding
8 M
6 (b) With a sketch, explain the electron beam welding process and mention its applications.
12 M

7 (a) With neat sketch, explain heat affected zone (HAZ) and its various regions.
10 M
7 (b) Explain the different welding defects and also give cause and remedies.
10 M

8 (a) What is non-destructive testing? Explain with neat sketch ultrasonic inspection and its application areas.
10 M
8 (b) With neat sketch, explain fluorescent particle inspection process and its application areas.
10 M

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