中国激光, 2017, 44 (12): 1202001, 网络出版: 2017-12-11
多脉冲激光修整青铜金刚石砂轮的表面变质层
Multi-Pulsed Laser Truing and Dressing of Deterioration Layer on Bronze-Bonded Diamond Grinding Wheel Surface
激光技术 激光烧蚀 青铜金刚石砂轮 变质层 水柱流 laser technique laser ablation bronze-bonded diamond grinding wheel deterioration layers liquid column flow
摘要
对脉冲激光修整青铜金刚石砂轮石墨变质层进行了理论研究, 当激光功率密度为1.68×108~3.359×108 W/cm2时, 对金刚石表面的温度演化进行了数值仿真。研究结果表明, 金刚石达到石墨化温度的时间约为435~440 ns, 金刚石的石墨化程度较低。提出了水柱流辅助脉冲光纤激光修整青铜金刚石砂轮的新方法, 降低了金刚石的石墨化程度。
Abstract
After the pulsed laser truing and dressing,the graphitized deterioration layers of bronze-bonded diamond grinding wheels are investigated theoretically. When the laser power density is 1.68×108-3.359×108 W·cm-2, the temperature evolution on the diamond surface is numerically simulated. The study results show that the time for which the diamond temperature reaches the graphitization temperature is 435-440 ns, and the graphitization degree is low. A new method for pulsed fiber laser truing and dressing of bronze-bonded diamond grinding wheels assisted by liquid column flows is proposed, which clearly reduces the graphitization degree.
蔡颂, 陈根余, 周聪, 明兴祖. 多脉冲激光修整青铜金刚石砂轮的表面变质层[J]. 中国激光, 2017, 44(12): 1202001. Cai Song, Chen Genyu, Zhou Cong, Ming Xingzu. Multi-Pulsed Laser Truing and Dressing of Deterioration Layer on Bronze-Bonded Diamond Grinding Wheel Surface[J]. Chinese Journal of Lasers, 2017, 44(12): 1202001.