| 光纤激光辅助TIG焊焊缝成形特点及影响因素分析 |
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| 引用本文： | 尹燕,他进国,王占冲,张瑞华.光纤激光辅助TIG焊焊缝成形特点及影响因素分析[J].焊接学报,2014,35(8):13-16. |
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| 作者姓名： | 尹燕 他进国 王占冲 张瑞华 |
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| 作者单位： | 1.兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室, 兰州 730050 |
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| 基金项目： | 国家自然科学基金资助项目(51265031) |
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| 摘 要： | 在活性焊接法研究的基础上提出了激光辅助TIG焊方法.焊前在氧气保护下采用小功率激光器熔化焊道表面,然后用常规TIG焊覆盖激光预熔焊道,从而可使熔深增加,熔宽减小.结果表明,激光预熔和未预熔焊道熔深、熔宽均随焊接电流的增加而增加,但激光预熔焊道熔深增加的更快;焊接速度的增加使激光预熔和未预熔焊道熔深、熔宽均减小;随激光功率增加,焊道熔深增加,熔宽减小;随预熔速度的增加,熔深先增大后减小,熔宽先减小后增大.综合最佳参数后可以得到焊缝熔深增加明显、焊缝表面成形良好的焊道,从而可以发展为一种新的活性焊接法.
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| 关 键 词： | 活性焊 激光 氧元素 熔深增加 |
| 收稿时间： | 2013/6/21 0:00:00 |
Fiber laser-assisted TIG welding weld characteristics and in fluencing factors |
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| YIN Yan,TA Jinguo,WANG Zhanchong and ZHANG Ruihua.Fiber laser-assisted TIG welding weld characteristics and in fluencing factors[J].Transactions of The China Welding Institution,2014,35(8):13-16. |
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| Authors: | YIN Yan TA Jinguo WANG Zhanchong and ZHANG Ruihua |
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| Affiliation: | 1.Key Laboratory of Non-ferrous Metal Alloys, Lanzhou University of Technology, Ministry of Education, Lanzhou 730050, China2.Key Laboratory of Non-ferrous Metal Alloys, Lanzhou University of Technology, Ministry of Education, Lanzhou 730050, China;China Iron & Steel Research Institute Group, Beijing 100081, China |
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| Abstract: | On the base of active welding method, laser aided activating TIG welding was proposed. At first, the surface of weld was melted by the mini power laser protected by oxygen.Then the conventional TIG was used to cover the weld, which achieved the target of the weld with deeper penetration and narrower width. The results show that with the increase of welding current, the penetration and width of weld melted and unmelted by laser increased, but the penetration of weld melted increased faster. The increase of welding speed led to decrease of penetration and width. With increase of power laser, the penetration increased, but width decreased. With the increase of pre-melting speed, the penetration increased first and then decreased, the width decreased and then increased. The weld, its penetration increased significantly and appearance was good, was gained by optimum parameters. Thus laser aided activating TIG welding was developed as a novel active welding method. |
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| Keywords: | activating TIG welding laser oxygen penetration increase |
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