| 汽车板激光扫描焊接工艺研究 |
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| 引用本文： | 祁小勇,李道金,叶兵,王爱华. 汽车板激光扫描焊接工艺研究[J]. 激光技术, 2016, 40(6): 825-829. DOI: 10.7510/jgjs.issn.1001-3806.2016.06.011 |
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| 作者姓名： | 祁小勇 李道金 叶兵 王爱华 |
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| 作者单位： | 1.激光先进制造技术湖北省重点实验室, 武汉 430223; |
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| 基金项目： | 国家科技支撑计划资助项目(2012BAF08B02) |
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| 摘 要： | 为了研究激光扫描焊接汽车板的工艺方法，采用4kW光纤激光器对0.7mm镀锌板与0.8mm冷轧板SPCC两类汽车板的激光扫描焊接工艺进行了理论分析和实验验证，得到了板间间隙、激光功率、扫描速率等对焊缝成形及强度的影响规律。结果表明，当选取板间间隙0.1mm~0.2mm、激光功率3000W~3400W、焊接速率不小于3m/min等适当参量进行焊接时，焊缝质量可满足电子束及激光焊接接头欠缺质量分级指南C级标准，且强度高于母材。选取合适的工艺参量时，激光扫描焊接在无保护气的作用下可得到高质量的焊缝。
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| 关 键 词： | 激光技术 激光扫描焊接 汽车板 激光功率 |
| 收稿时间： | 2015-10-27 |
Laser scanner welding processing of automobile panels |
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| Abstract: | In order to research the process of laser scanner welding, the laser scanner welding process of 0. 7mm galvanized sheet and 0. 8mm cold-rolled sheet ( SPCC) with a 4kW fiber laser was analyzed in theory and verified in experiments. The influence of the gap between the sheets, laser power and scanning speed on macro-morphology and strength were obtained. The results show that the welded seams achieved by laser parameters of plate gap 0. 1mm~0. 2mm, laser power 3kW~4kW and welding speed 3m/min have the strength higher than the base metal, and can satisfy the C-class of electron and laser beam welded joints ( levels guidance for quality imperfaction ) . Laser scanner welding can get a high quality welding seam without shielding gas when selecting right parameters. |
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| Keywords: | laser technique laser scanner welding automobile panels laser power |
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