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Posted By: kondapalli Member Level: Gold Posted Date: 04 Jun 2008
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2007 Jawaharlal Nehru Technological University B.Tech Metallurgy & Material Technology POWDER METALLURGY setno3 Question paper
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1. (a) What are the various methods of manufacture of metal powders?
(b) Explain in detail any three of the methods. [8+8]
2. Give three examples of applications of Powder Metallurgy and briefly explain the
reason for such applications. [16]
3. (a) What is the purpose of mixing?
(b) Describe different types of mills used for mixing.
(c) Indicate the problems associated with it. [4+6+6]
4. (a) What is the role of lubrication in die compaction?
(b) Give examples of various lubricants. [10+6]
5. Describe four important material transport mechanisms of sintering. [16]
6. (a) Critically explain the steps involved in production of Self-lubricating bearings.
(b) What are their fields of application? [12+4]
7. (a) What is the double-sintering process?
(b) Why are presintering and heat treatment of green carbide done?Explain.
[8+8]
8. Write short notes on:
(a) Sintered carbide tools
(b) Furnaces used for sintering
(c) Sieve analysis
(d) Hot isostatic pressing [4 x 4]
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