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SM45C 중탄소강의 CW Nd:YAG 레이저표면경화와 고주파표면경화특성 비교
신호준(Ho-Jun Shin),유영태(Young-Tae Yoo),안동규(Dong-Gu Ahn),신병헌(Byung-Heon Shin) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
Laser heat treatment technology is used for improving the feature of fatigue resistance and wear resistance in mobile parts. The purpose of this study is to compare the characteristics of laser heat treatment and high frequency heat treatment, which is commonly used in industrial place. For the preemptive experiment, the distribution, depth and size of hardening and its micro-structural features were compared between surface heat treatment case by defocusing and variables of each process for heat treatment by exclusively manufactured heat treatment optical system. As a result, high frequency heat treatment has wide distribution of hardening depth and width about 3 times larger than laser heat treatment, however, its average hardness showed 621.4Hv which is smaller than the average hardness of laser heat treatment with 691Hv.