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2003 Course Powder Metallurgy (Elective I)

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Total No. of Questions :12] P1046 [Total No. of Pages : 3 [3864]-176 B.E.(Prod.) POWDER METALLURGY (Elective - I) (2003 Course) (411085) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer Three questions from Section I and Three questions from SectionII. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) Discuss in brief some of the modern developments in powder production, compacting & sintering. [8] b) What is meant by metal powder characteristics? Discuss the chemical,physical, & technological characteristics of metal powders.[8] OR Q2) a) What is meant by size distribution of metal powders? Discuss its importance in field of P/M. [8] b) Describe briefly - Internal porosity of powders, compression ratio, flow rate. [8] Q3) a) Explain the role of different factors on the degree of compaction of a metal powder. To what extent can the theoretical density be approached by compacting. [9] b) What are the factors that are required to be considered for a die design? Does the die design impose any limitation on the compacting load?[9] OR P.T.O. 1

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