为提高高强铝合金钨极氩弧焊的效率,以LD10铝合金为研究对象,将粉煤灰、粉煤灰+SiO2作为活性剂涂敷在试件表面,采用TIG方式进行焊接。研究了粉煤灰、粉煤灰+SiO2作为活性剂对焊缝深宽比、微观组织和接头显微硬度的影响。结果表明:活性剂的涂敷均会使焊缝熔宽增加、熔深加大,添加粉煤灰、粉煤灰+SiO2活性剂焊件的焊缝硬度和焊接热影响区的硬度均高于常规焊接件。
In order to increase the TIG welding efficiency of high strength aluminum alloy,activating flux of fly ash,fly ash and SiO2 was utilized to coat on the surface of LD10 aluminum alloy. The effect of activating flux on the depth-to-width ratio, microstructure and microhardness of joint was studied. The experimental results show that the coating of activating flux of fly ash,fly ash and SiO2 can increase the width and depth of weld,and the hardness of welding bead and HAZ are higher than that withhout coating activating fiux.
参考文献
[1] | 宋仁国.高强度铝合金的研究现状及发展趋势[J].材料导报,2000(01):20-21,34. |
[2] | 潘志军,黎文献,马正青,谭敦强.高强铝合金的研究现状及展望[J].铝加工,2001(04):39-41. |
[3] | 刘志华,赵兵,赵青.21世纪航天工业铝合金焊接工艺技术展望[J].导弹与航天运载技术,2002(05):63-68. |
[4] | 石磊.粉煤灰的综合利用现状与展望[J].再生资源研究,2006(02):41-44. |
[5] | 袁玉兰,王惜宝,吴顺生,朱冬妹.活性剂在焊接中的应用及展望[J].材料导报,2005(08):66-68,75. |
[6] | 杨春利,牛尾诚夫,田中学.TIG电弧活性化焊接现象和机理研究(2)--活性化TIG焊接中的电弧现象[J].焊接,2000(05):15-18. |
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