| 铝合金激光立焊特性分析 |
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| 引用本文： | 苗玉刚,陈彦宾,李俐群,吴林.铝合金激光立焊特性分析[J].焊接学报,2007,28(10):57-60. |
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| 作者姓名： | 苗玉刚 陈彦宾 李俐群 吴林 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 摘 要： | 以4 mm厚5A06铝合金为研究对象,利用3 kW的CO2激光器进行激光立焊和平焊工艺试验,对铝合金激光立焊的焊缝成形和气孔特征进行研究.结果表明,立焊的正面下凹量和背面下塌量均小于平焊,随着焊接热输入的增加,立焊和平焊的差异增大.立焊与平焊的焊缝成形和接头尺寸略有差异,当热输入较大时,立焊的正反面熔宽略小于平焊,而熔深则略大于平焊.铝合金激光立焊的气孔多以体积较大且形状不规则的气孔或孔洞组成,从气孔分布位置和形状看,立焊与平焊的差别不大,气孔多分布在焊缝中部且尺寸较大,相同工艺条件下,立焊的气孔数量略低于平焊.
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| 关 键 词： | 铝合金 激光立焊 平焊 特性 铝合金 激光 立焊 特性分析 aluminum alloys laser welding position vertical characteristic 气孔数 工艺条件 焊缝 分布位置 差别 组成 孔洞 规则 形状 体积 略大于 |
| 文章编号： | 0253-360X（2007）10-057-04 |
| 收稿时间： | 2006/11/25 0:00:00 |
| 修稿时间： | 2006-11-25 |
Analysis of characteristic of vertical position laser welding for aluminum alloys |
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| MIAO Yugang,CHEN Yanbin,LI Liqun and WU Lin.Analysis of characteristic of vertical position laser welding for aluminum alloys[J].Transactions of The China Welding Institution,2007,28(10):57-60. |
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| Authors: | MIAO Yugang CHEN Yanbin LI Liqun and WU Lin |
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| Affiliation: | State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China and State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The experiments of vertical and flat position laser welding for 4 mm-thick 5A06 aluminum alloys were implemented, and the characteristics of weld dimension and porosity in the vertical position laserwelding for aluminum alloys were investigated.The results show that the concave value and excessive penetration value of vertical welding is less than those of flat welding.Further, with the increase of heat input, the difference of vertical and flat welding becomes obvious.The weld appearance and dimension of the vertical welding and flat welding were slightly different.When the heat input is increased to a great extent, the weld depth of vertical welding is more than that of flat welding.However, the weld width of vertical welding is less than that of flat welding.The porosity of vertical position laser welding for aluminum alloys is composed of the large and irregular porosity or hole.It is not obviously different during vertical welding and flat welding, and a great deal porosity concentrates in the upper and middle part of weld section, which can be indicatied from the distributing position and shape of porosity.The number of porosity in vertical welding was slightly less than that of flat welding for the same welding parametors. |
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| Keywords: | aluminum alloys vertical position laser welding flat welding characteristic |
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