| 镁合金激光氩弧复合热源冷填丝焊接工艺 |
| |
| 引用本文： | 郝新锋,刘黎明,李长茂.镁合金激光氩弧复合热源冷填丝焊接工艺[J].焊接学报,2007,28(5):77-80. |
| |
| 作者姓名： | 郝新锋 刘黎明 李长茂 |
| |
| 作者单位： | 大连理工大学,三束材料改性国家重点实验室,辽宁,大连,116024 |
| |
| 基金项目： | 大连理工大学-沈阳自动化研究所联合探索基金 |
| |
| 摘 要： | 研究了镁合金的低功率激光-氩弧复合热源冷填丝焊接工艺.通过5 mm厚镁合金板材的堆焊试验,研究了焊接电流、焊接速度、钨极高度和热源距离等参数对焊缝成形和焊接熔深的影响,确定了钨极高度为0.75 mm,热源间距DLA为1.2 mm左右的焊接参数范围;在堆焊基础上,进行了2.5 mm厚镁合金板材的对焊试验,实现了单面焊双面成形,焊接速度达1 200 mm/min,焊接接头熔深为单TIG冷填丝接头熔深的两倍,抗拉强度达到母材的95%左右,实现了高速、优质的镁合金冷填丝焊接.另外,简要分析了激光的加入对焊接过程的影响.
|
| 关 键 词： | 镁合金 低功率激光 复合热源 冷填丝焊接 |
| 文章编号： | 0253-360X（2007）05-077-04 |
| 收稿时间： | 2006/6/19 0:00:00 |
| 修稿时间： | 2006-06-19 |
Low powered laser-arc hybrid welding of magnesium alloy with cold filler wire |
| |
| HAO Xinfeng,LIU Liming and LI Changmao.Low powered laser-arc hybrid welding of magnesium alloy with cold filler wire[J].Transactions of The China Welding Institution,2007,28(5):77-80. |
| |
| Authors: | HAO Xinfeng LIU Liming and LI Changmao |
| |
| Affiliation: | State Key Laboratory of Materials Modification, Dalian University of Technology, Dalian 116024, Liaoning, China,State Key Laboratory of Materials Modification, Dalian University of Technology, Dalian 116024, Liaoning, China and State Key Laboratory of Materials Modification, Dalian University of Technology, Dalian 116024, Liaoning, China |
| |
| Abstract: | Low powered laser-arc hybrid welding of magnesium alloy with cold filler wire was studied.The effect of welding parameters on weld appearance and penetration was investigated in bead welding experiments of magnesium alloy plate with the thickness of 5 mm and the range of welding parameters was confirmed,such as the electrode height(about 0.75 mm)and the distance between laser and arc(about 1.2 mm).Based on this,magnesium alloy plate with the thickness of 2.5 mm was butt-welded successfully and the welding speed increases to 1 200 mm/min.The weld penetration of hybrid welding with cold filler wire is twice deeper that that of TIG welding and the tensile strength of hybrid welded joint achieves 95% of that of base metal,so magnesium alloy welded joint with high quality can be obtained by hybrid welding with cold wire at a high speed.Besides,the effect of laser pulses on welding process was analyzed. |
| |
| Keywords: | magnesium alloy low powered laser hybrid thermal sources welding with cold filler wire |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
