光纤激光焊接工艺参量对底部驼峰的影响

周聪; 夏海龙; 陈根余; 李时春; 黎长邹

doi:10.7510/jgjs.issn.1001-3806.2015.05.009

光纤激光焊接工艺参量对底部驼峰的影响

1.
湖南大学汽车车身先进设计制造国家重点试验室, 长沙 410082;
2.
湖南大学激光研究所, 长沙 410082

作者简介: 周聪(1979-),男,助理研究员,现主要从事激光烧蚀加工、激光焊接焊缝跟踪技术、激光加工制造过程中的信号检测与控制技术及其应用等研究工作。E-mail:zhoucong@hnu.edu.cn.

基金项目:
国家自然科学基金资助项目(51175165);国家科技重大专项课题资助项目(2013ZX04001131)
中图分类号: TG456.7

Effect of fiber laser welding parameters on root humps

1.
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;
2.
Laser Research Institute, Hunan University, Changsha 410082, China
CLC number: TG456.7

摘要: 为了研究高功率光纤激光焊接工艺参量对底部驼峰倾向的影响,采用单一变量方法研究了激光功率、焊接速度、离焦量、下表面保护气体流量及焊接方位的变化对底部驼峰的影响。结果表明,随激光功率的增加,底部驼峰倾向先加大后减小;焊接速率提高时,底部驼峰高度先增加后减小,驼峰间距明显减小;离焦量在0mm附近时,底部驼峰倾向较大;适当的下表面保护气体流量有助于减小底部驼峰倾向,最佳流量为15L/min;焊接方位为60时,一定程度上可减小底部驼峰倾向。优化后的工艺参量合理, 可有效地消除底部驼峰。
- 激光技术 /
- 激光焊接 /
- 工艺参量 /
- 底部驼峰
Abstract: In order to study influence of welding parameters on root humps in high power fiber laser welding, effect of laser power, welding speed, defocus, flow rate of bottom shielding gas and welding position on root humps was studied based on a single variable method. The results show that, with the increase of laser power, root humps tend to increase at first and then decrease. When welding speed increases, root hump height increases at first and then decreases, root hump spacing decreases significantly. When defocus is near 0mm, root hump tendency is obvious. Under the appropriate flow rate of bottom shielding gas, root hump tendency is reduced. The optimal rate is 15L/min. When welding orientation is 60, root hump tendency decreases to a certain extent. The results show that reasonable welding parameters can eliminate root hump efficiently.
- laser technique /
- laser welding /
- welding parameters /
- root hump

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光纤激光焊接工艺参量对底部驼峰的影响

作者简介: 周聪(1979-),男,助理研究员,现主要从事激光烧蚀加工、激光焊接焊缝跟踪技术、激光加工制造过程中的信号检测与控制技术及其应用等研究工作。E-mail:zhoucong@hnu.edu.cn.

Effect of fiber laser welding parameters on root humps

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光纤激光焊接工艺参量对底部驼峰的影响

作者简介: 周聪(1979-),男,助理研究员,现主要从事激光烧蚀加工、激光焊接焊缝跟踪技术、激光加工制造过程中的信号检测与控制技术及其应用等研究工作。E-mail:zhoucong@hnu.edu.cn

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Effect of fiber laser welding parameters on root humps

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光纤激光焊接工艺参量对底部驼峰的影响

作者简介: 周聪(1979-),男,助理研究员,现主要从事激光烧蚀加工、激光焊接焊缝跟踪技术、激光加工制造过程中的信号检测与控制技术及其应用等研究工作。E-mail:zhoucong@hnu.edu.cn.

Effect of fiber laser welding parameters on root humps

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光纤激光焊接工艺参量对底部驼峰的影响

作者简介: 周聪(1979-),男,助理研究员,现主要从事激光烧蚀加工、激光焊接焊缝跟踪技术、激光加工制造过程中的信号检测与控制技术及其应用等研究工作。E-mail:zhoucong@hnu.edu.cn

English Abstract

Effect of fiber laser welding parameters on root humps

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目录