Thin Wall Metal Material Laser Cutting Process Optimization Based on Orthogonal Experiments

doi:10.3969/j.issn.1004-132X.2024.07.016

Abstract

Abstract: After laser cutting, the material substrates of thin wall metal components and the support plates below were prone to adhesion, which seriously affected the cutting quality. Fiber laser cutting experiments were conducted on 304 stainless steel and GH605 high temperature alloy thin plates, and the formation mechanism of the adhesion in laser cutting of different materials was analyzed. The single factor experimental method was used to analyze the influences of laser cutting process parameters on the HAZ and burr accumulation. The processing results show that with the addition of a micro-connection process, when the laser power is as 165 W, the cutting speed is as 5 m/min, and the auxiliary gas pressure is as 1.2 MPa, the cut edges are smooth and without deformation and residual adhesion.

Key words: laser cutting, thin wall, adhesion, heat affected zone(HAZ), burr

摘要： 激光切割后，金属薄壁类零件的材料基体与下方的支撑板易产生粘连，严重影响切割质量。采用光纤激光对304不锈钢和GH605高温合金薄板进行切割实验，分析了激光切割不同材料发生粘连的机理。采用单因素试验法分析了激光切割工艺参数对热影响区及毛刺堆积量的影响规律。加工结果显示，在加入微连工艺的前提下，激光功率为165 W，切割速度为5 m/min，辅助气体压力为1.2 MPa时，切缝边缘光滑、无变形及残留黏附现象。

关键词: 激光切割, 薄壁, 粘附, 热影响区, 毛刺

CLC Number:

TN249

ZHAI Zhaoyang1, LI Xinxin1, ZHANG Yanchao1, LIU Zhongming2, DU Chunhua1, ZHANG Huaming3. Thin Wall Metal Material Laser Cutting Process Optimization Based on Orthogonal Experiments[J]. China Mechanical Engineering, 2024, 35(07): 1279-1289.

翟兆阳1, 李欣欣1, 张延超1, 刘忠明2, 杜春华1, 张华明3. 基于正交试验的金属薄壁材料激光切割工艺优化[J]. 中国机械工程, 2024, 35(07): 1279-1289.

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