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| Title: | Enhancement of micro-drilling performance by cryogenic treatment of drill bit |
| Authors: | Maity, K P
Chaini, S
Singh, K |
| Keywords: | Micro-drilling
Cryo-treatment
circularity
Grey-Taguchi Method |
| Issue Date: | Jun-2012 |
| Citation: | 26th International Conference on surface modification technologies, june 20th -22nd 2012, Ecole Centrale de Lyon Ecully France |
| Abstract: | Cryogenic treatment is one time permanent treatment that affects the entire section or bulk of
the component unlike coatings. The cryogenic treatment is an add on process over
conventional heat treatment in which the samples are cooled down to prescribed cryogenic
temperature for a long time and then heated back to room temperature. The process is not a
substitute for heat treatment but rather an extension of the heating/quenching/tempering
cycle. In most instances the cryogenic cycle is followed by a heat tempering procedure[1].
Two major changes in micro-structure of steel occur as a result of cryogenic treatment[2,3],
which play the principal role for dramatic improvement in wear resistance. The retained
austenite are transformed to wear resistant martensite to achieve more uniform hardness. Fine
carbide precipitates are formed during the long cryogenic soak. These fine particles along
with large particles form a denser, more coherent and much tougher matrix in the materia... |
| Description: | Copyright belongs to proceeding publisher |
| URI: | http://hdl.handle.net/2080/1737 |
| Appears in Collections: | Conference Papers
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Files in This Item:
| File |
Description |
Size | Format |
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| KPM-FRANCE 1.pdf | | 72Kb | Adobe PDF | View/Open |
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