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ADVANCED TECHNOLOGY FOR IMPROVEMENT IN TOOL PROPERTIES USING CRYO FLUID

Tool life is important parameter in overall machining operation. Its essential properties are high hardness, toughness and wear resistance. The requirement o f these properties in any nay particular tool steel will depends on intended service condition


Under conventional heat treatment processes overall properties cannot be achieved because of high amount of retained austenite which responsible for cracking the material which reduces the tool life


In cryogenic treatment work piece is cooled to temperature of around -196° c to improve certainproperties beyond the simple conversion of retained austenite to martensite. The presence of fine n- phase carbide precipitate has been identified as another cause for improvement in various properties.



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Tue, 12/04/2011 - 08:02

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