Study of Laser Hardening Used in Cylindrical
Abstract: Laser hardening by means of diode laser is an innovative technique in industrial applications, but when the treated surface is larger than the laser spot, lap weld tempering, a well-known problem in laser hardening occurs. To avoid the lap weld tempering phenomenon, Visible Spot (VS) technique is investigated for cylindrical workpieces. In case of shaft parts, circular laser hardening is adopted by imposing a high rotational speed to the workpieces under the close loop control laser hardening system. A circular apparent spot is generated to heat the all the annular surface of the workpiece contemporaneously, as a consequence, lap weld tempering is avoided.
文章引用: 柳岸敏 , 张翀昊 (2013) 激光硬化在轴类零件上的应用研究。 材料科学， 3， 85-90. doi: 10.12677/MS.2013.32016
 L. Li. The advances and characteristics of high power diode laser materials processing. Optic and Lasers in Engineering, 2000, 34(4-6): 231-253.
 E. Kennedy, G. Byrne and D. N. Collins. A review of the use of high power diode lasers in surface hardening. Journal of Materials Processing Technology, 2004, 155-156: 1855-1860.
 邱星武, 李刚, 陈华等. 激光相变硬化技术发展现状及展望[J]. 热处理技术与装备, 2009, 30(1): 4-7.
 丁阳喜. Crl2MoV钢宽带激光淬火组织回火稳定性研究[J]. 热加工工艺, 2007, 36(18): 62-66.
 R. S. Lakhkar, Y. C. Shin and M. J. Krane. Predictive modeling of multi-track laser hardening of AISI 4140 steel. Materials Science and Engineering A, 2004, 480: 209-217
 G. Tani, L. Orazi and A. Fortunato. Prediction of hypo eutectoid steel softening due to tempering phenomena in laser surface hardening. CIRP Annals—Manufacturing Technology, 2008, 57 (1): 209-212.
 E. Capello, L. Giorleo and B. Previtali. New method for modelling the laser tempering. AITeM Conference, Montecatini, 10-12 September 2007.