Influence of the laser quenching process parameters on the depth and the hardness of the hardening layer of HT210
GAO Fei-fei1,2��WANG Jing-zhong1��BAO Han-sheng2
��1. Institute of Metallurgical Engineering�� Xi��an University of Architecture and Technology�� Xi��an 710055�� China 2. Institute of Special Steel�� Central Iron and Steel Research Institute�� Beijing 100081�� China��
Abstract��The orthogonal test method was applied in the multi-pass laser quenching experiment�� and the influence of the laser quenching processing parameters on the depth and the hardness of the hardening layer of gray cast iron was studied. The results showed that the overlap width affected the average depth and hardness of the hardening layer�� and had no obvious effect on the maximum depth and hardness. In addition�� increasing the scanning speed of laser led the decrease of the depth and hardness of the hardening layer. When the laser power was excessive�� on the sample surface quenched zone�� it might be melted�� cracks were appeared��and the hardness was higher than that of the incomplete melted sample. Furthermore�� the increase of the laser power resulted in the higher value of the depth and hardness of the hardening layer. Additionally�� the influence of the laser power on the depth and hardness of the hardening layer was more significant when the scanning speed was relatively low.
۬�ɷɣ������ң�������. �������ղ�����HT210��Ӳ���Ӳ�ȵ�Ӱ��[J]. �й������ڿ���, 2017, 35(5): 20-25.
GAO Fei-fei����WANG Jing-zhong��BAO Han-sheng. Influence of the laser quenching process parameters on the depth and the hardness of the hardening layer of HT210. Chinese Journal of Iron and Steel, 2017, 35(5): 20-25.
2017, Vol. 35 
