한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)
- 제10권2호
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- Pages.66-75
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- 1993
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
레이저 표면경화 공정에서 경화층깊이의 실시간 측정을 위한 실험적 연구
An experimental study on the in-process measurement of case depth for LASER surface hardening process
- Woo, H.G. (Korea Advanced Institute of Science and Technology) ;
- Park, Y.J. ;
- Han, Y.H.
- 발행 : 1993.06.01
초록
This paper proposes a monitoring method for nondestructive and in-process measurement of the case depth in LASER surface heat treatment process. The method is essentially an eddy-current method, and measures sensing coil's electrical impedance which varies with the changes of the material microstructure due to hardening. To investigate te validity of the proposed method a series of experiments were performed for various hardning depths. The results show that the relationship between the eddy- current sensor output and the changes in case depth is almost linear. This indicates that the eddy-current measuring method can be used as one of the possible monitoring method for mesauring the hardened depth in LASER heat treatment processes.
키워드