| 调Q脉冲CO2激光切割Si3N4工程陶瓷的机理研究 |
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| 引用本文： | 洪蕾,李力钧,鞠春雷. 调Q脉冲CO2激光切割Si3N4工程陶瓷的机理研究[J]. 机械工程学报, 2002, 38(6): 61-65 |
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| 作者姓名： | 洪蕾 李力钧 鞠春雷 |
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| 作者单位： | 清华大学材料科学与工程博士后流动站,北京,100084;湖南大学 |
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| 基金项目： | ( 国家自然科学基金资助项目(59875018). |
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| 摘 要： | 采用调Q脉冲CO2激光器对Si3N4工程陶瓷进行了切割试验.在计及切口烧蚀前沿形状和高斯光束空间能量分布的前提下,采用简化的二维模型,针对气化切割过程,在能量平衡基础上,建立了一个脉冲激光切割数学模型.试验结果表明,采用高速多次重复走刀工艺可实现无损伤激光切割.
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| 关 键 词： | Si3N4 调Q脉冲CO2激光 切割 数学模型 |
| 修稿时间： | 2000-05-24 |
INVESTIGATION OF CUTTING OF Si3N4 ENGINEERING CERAMICS WITHQ-SWITCHED PULSE CO2 LASER |
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| Hong Lei. INVESTIGATION OF CUTTING OF Si3N4 ENGINEERING CERAMICS WITHQ-SWITCHED PULSE CO2 LASER[J]. Chinese Journal of Mechanical Engineering, 2002, 38(6): 61-65 |
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| Authors: | Hong Lei |
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| Affiliation: | Hong Lei(Tsinghua University)Li Lijun Ju Chunlei(Hunan University) |
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| Abstract: | Cutting of Si3N4 engineering ceramics with Q-switched pulse CO2 laser. Considering the effective shape of the cut front that has influence to the absorption of the laser beam, a mathematics model considering a simplified 2D geometry based on the geometry of a pulsed laser cut during vaporization cutting process is developed. This model is based on the energy balance. The experiment results show that it would realize crack-free cutting by using high speed and multipass cutting. |
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| Keywords: | Si3N4 Q-switched pulse CO2 laser Cutting Mathematics model |
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