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MY1009 METALLURGY OF TOOL MATERIALS
Posted Date: 18 May 2008 Resource Type: Articles/Knowledge Sharing Category: Syllabus
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Posted By: J.Jerome Jernix Member Level: Silver Rating: Points: 1
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MY1009 METALLURGY OF TOOL MATERIALS
1. CLASSIFICATION AND MANUFACTURE OF TOOL STEELS Classification - AISI system, Production techniques – problems in melting - Powder Metallurgy route, Refining methods like VAR and ESR - forming of tool steels.
2. HEAT TREATMENT OF TOOL STEELS Spheroidising – selection of quenching and tempering parameters – precautions - Effect of retained austenite - Multiple tempering, sub-zero treatment and cryo treatment - surface treatments - defects in tool steels - Over heated and burnt structures - Decarburisation.
3. PROPERTIES AND TESTING OF TOOL STEELS Mechanical propertiess of tool steels, strength, hardness and toughness – properties at elevated temperature – microstructure - distribution of carbides - coating thickness – micro hardness – adhesion and scratch resistance 4. ADVANCED TOOL MATERIALS Sintered tungsten carbide tools - ISO classification – Uses of P,M and K grades – cermet – ceramics, mixed and reinforced grades – cubic boron nitride – poly crystalline diamond – Manufacturing techniques – properties
5. SURFACE TREATMENTS AND COAT INGS Sulphidising of tool steels – TiN coating by PVD – coating of carbide tools – mono and multi layer coatings of TiC, TiN, Alumina and DLC by PVD and CVD processes - selection of tool materials
TEXT BOOK 1. Payson, “Metallurgy of tool steels”, John Wiley and sons, New York, 1962.
REFERENCES 1. Robert Wilson, “Metallurgy and Heat Treatment of Tool Steels”, McGraw-Hill, New York, 1975 2. Roberts, Haymaker and Johnson, “Tool Steels”, 3rd edition, ASM, 1962.
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Responses
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| Author: Vidya 23 May 2008 | Member Level: Diamond Points : 2 | useful article
| | Author: Chithra 24 May 2008 | Member Level: Gold Points : 2 | nice information
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