Analysis of Machining Characteristics of Cryogenically Treated Die Steels Using EDM
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 4
Abstract
The field of cryogenics was advanced during World War II when scientists found that metals frozen to low temperature showed more resistance to wear. Major advantages of these changes are to enhance the abrasion resistance hardness and fatigue resistance of the materials. To attain high accuracy in difficult to machine materials, the nonconventional machining has become the lifeline of any industry. One of the most important non-conventional machining methods is Electric discharge machining (EDM). In this research work, experimental investigations have been made to compare the machining characteristics of three die steel materials, before and after deep cryogenic treatment using EDM. The output parameters for study are material removal rate, tool wear and surface roughness. The results of study suggest that cryogenic treatment has a significant positive effect on the performance of work pieces, tool wear decreases and surface finish of the work piece after machining improves sharply for all three die steels. The best improvement in tool wear and surface roughness is reported by High Carbon High Chromium (HCHCr) followed by EN 8 and then by EN 31. It can be recommended that cryogenically treated die steels can be efficiently machined through EDM.
Authors and Affiliations
Singh Jaspreet
Keywords
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