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김한군 ( H. G. Kim ),김윤현 ( Y. H. Kim ) 한국열처리공학회 2004 熱處理工學會誌 Vol.17 No.5
N/A Effect of pre-treatment on the gas nitriding process of austenitic stainless steels has been investigated and the following results were obtained. Minimum pre-treatment time was decreased to 5min with increasing treatment temperature from 200℃ to 600℃. Surface activation effect by the pre-treatment was maintained in the air to holding time of 64hr, judging from the analysis result of gas nitrided specimens. The Depth of nitrided layer of STS 304 and 316 stainless steels were ranged from 5μm to 90μm at 440℃-600℃. The X-ray diffraction intensity for austenitic stainless steels were increased as nitriding temperature from 440℃ to 600℃.
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실험계획법을 이용한 냉간 성형품의 선삭 공정에 대한 가공성 평가
김선현(S. H. Kim),김준현(J. H. Kim),김태형(T. H. Kim),권대은(D. E. Kwon),김윤현(Y. H. Kim),이학선(H. S. Lee) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.10
In order to get cost reduction in the turning machining field, manpower and extra expenses are reduced. To get an optimum cutting condition, it highly tends to depend on a lot of tests according to individual field experience. So it is necessary for change of the flexible cutting conditions in industrial site, because the society becomes high technology gradually. This study presents and effective method to get optimum cutting condition using Taguchi method that is most commonly used a design of experimental method. Therefore, this study can get an optimum cutting condition at minimum of test according to make cutting plans through using the minimum design of experiment.
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