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http://dx.doi.org/10.7736/KSPE.2013.30.5.499

Characteristics of Surface Hardening of Nd:YAG Laser According to the Diameter variation of SM45C Cylindrical Bar  

Lee, Ka Ram (Department of Advanced parts and Materials Engineering, Chosun Univ.)
Yang, Yun Seok (Department of Advanced parts and Materials Engineering, Chosun Univ.)
Hwang, Chan Youn (Department of Advanced parts and Materials Engineering, Chosun Univ.)
Park, Eun Kyeong (Department of Advanced parts and Materials Engineering, Chosun Univ.)
Yoo, Young Tae (Department of Mechatronics Engineering, Chosun Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.30, no.5, 2013 , pp. 499-506 More about this Journal
Abstract
Heat-treatment is one of the core technologies to enhance various characteristics such as strength, hardness, toughness, abrasion resistance and fatigue resistance for the mold material. This paper focuses on characteristics of the laser heat-treatment according to the cylindrical bar diameter variation in case of the SM45C. From the results of the experiments, it has been observed that the maximum hardness is 744Hv when the power is 1630W and the travel of laser is 0.5m/min. And then, the hardness width, depth and microstructure were observed for characteristics. Finally, when the cylindrical bar diameter size grow, the hardness width decrease whereas hardness depth increase.
Keywords
Nd:YAG Laser; Surface hardening; Cylindrical bar; Mold Material; SM45C;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Yoo, E. H., "A Study on Surface Hardening and Cladding of High Carbon steel and Medium Carbon steel by Laser," Meterial Engineering, A Thesis for a Doctorate, Hanyang University, 2001
2 Yoo, Y. T., Shin. H. J., and Ahn, D. G., "Characteristics of Laser Surface Hardening for SM45C Medium Carbon Steel using Continuous Wave Nd:YAG Laser," Journal of the Korean Society of Precision Engineering, Vol. 22, No. 11, pp. 51-58, 2005.   과학기술학회마을
3 Kim, J. D., Kil, B. L., and Kang, W. J., "Surface Transformation Hardening for Rod-shaped Carbon Steels by High Power Diode Laser," Journal of the Korean Society of Marine Engineering, Vol. 31, No. 8, pp. 961-969, 2007.   과학기술학회마을   DOI   ScienceOn
4 Kim, J. D. and Kang, W. J., "Study on Characteristics of Laser Surface Transformation Hardening for Rodshaped Carbon Steel(I)," Journal of the Korean Welding and Joining Society, Vol. 25, No. 3, pp. 78-84, 2007.
5 Pellizzari, M. and De Flora, M. G., "Influence of laser hardening on the tribological properties of forged steel for hot rolls," Wear, Vol. 271, pp. 2402-2411, 2011.   DOI   ScienceOn
6 Magnabosco, I., Ferro, P., Tiziani, A., and Bonollo, F., "Induction heat treatment of a ISO C45 steel bar : Experimental and numerical analysis," Computational Materials Science, Vol. 35, pp. 98-106, 2006.   DOI   ScienceOn
7 Na, G. D., Yoo, Y. T., Shin, H. J., and Shin, B. H., "Characteristics Induction and Laser Surface hardening of SM45C Steel," Journal of the Korean Society of Precision Engineering, Vol. 23, No. 7, pp. 39-50, 2006.   과학기술학회마을