VTU Mechanical Engineering (Semester 3)
Manufacturing Process 1
May 2016
Total marks: --
Total time: --
INSTRUCTIONS
(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) Classift manufacturing processes. Explain factors to be considered while selecting a process for a given application.
10 M
1(b) List the various types of patterns. Explain the different types of pattern allowances, with neat sketches.
10 M

2(a) List the types of moduling sand. Discuss the desirable properties of moduling sand.
10 M
2(b) With a neat sketch , explain the working principle of Jolt and sqeeze moduling machine.
10 M

3(a) With a neat sketch, explain the different steps involved in shell moduling process and mention its advantages and disadvatages.
10 M
3(b) Name the centrifugal casting methods. With a neat sketch, explain the working of vertical and horizontal type centrifugal casting processes.
10 M

4(a) With a neat sketch, explain coreless induction furnace and mention its merits and demerits.
10 M
4(b) Sketch and explain the construction and operation of a cupola.
10 M

5(a) With a neat sketch, explain Thermit welding process. Mention its merits and demerits.
10 M
5(b) Explain with sketches, the forward and backward welding methods.
10 M

6(a) Explain projection welding process with a sketch. List out the advantages of projection welding.
10 M
6(b) Explain briefly the following with sketches:
i) Seam welding
ii) Explosive welding
10 M

7(a) What is meant by HAZ? Explain the various regions of HAZ in low carbon steel during welding.
10 M
7(b) Discuss the various types of welding defects, their causes and remadies.
10 M

8(a) Differentiate between brazing and soldering. List out merits, demerits and applications of these two processes.
10 M
8(b) Explain the magnetic particle inspection method to test welded part with advantages and limitations.
10 M



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