激光加工工艺参数对硬质合金机械密封环端面微造型质量的影响

Effects of Laser Machining Parameters on the Quality of Micro-modeling on the End Face of Cemented Carbide Mechanical Seal Ring

采用灯泵浦YAG—T50系列激光打标机对YG8硬质合金进行了端面螺旋槽微造型加工实验。研究了有效矢量步长、有效矢量步间延时、Q频率、激光电流等工艺参数对微造型加工质量的影响。结果表明,随着有效矢量步长的增大,槽深减小,表面粗糙度增大;随着有效矢量步间延时或Q频率的增大,槽深和表面粗糙度均减小;随着激光电流的增大,槽深和表面粗糙度均增大;YG8硬质合金表面激光微造型的最优加工工艺参数如下:有效矢量步长0.001mm、有效矢量步间延时60μs、Q频率为20kHz、激光电流16A。

Micro-modeling machining experiments were carried out for an end spiral groove on YG8 cemen- ted carbide by using a lamp-pumped YAG T50 series laser marking machine. Effects of the machining pa- rameters were studied on the quality of micro-modeling including effective vector step length, effective vector step delay,Q frequency and laser current. The results show that with the increase of effective vector step length, groove depth decreases and its surface roughness increases. With the effective vector step or Q frequency increases, both groove depth and its surface roughness decrease. With laser current increases, both groove depth and its surface roughness increase. The optimal laser machining parameters for micro- modeling on cemented carbide surface are effective vector step length of 0. 001 mm,effective vector step delay of 60μs,Q frequency of 20 kHz and laser current of 16 A.