毫秒激光与纳秒激光焊接密封性对比研究
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摘要
针对0.07mm不锈钢密封焊接后变形大的问题,分别采用毫秒激光和纳秒激光进行激光焊接实验,通过对激光焊接设备参数和焊接工艺参数优化,进行焊接密封性、激光焊点重叠率及焊缝切片对比实验。实验测试结果表明,纳秒激光焊点的重叠率达到35%,即可满足焊接密封性,焊接后变形量小于0.03mm。由此得出,对搭接焊接厚度0.07mm的不锈钢,在保证焊接密封性及变形量小于0.05mm要求时,采用纳秒激光焊接是最佳的工艺选择。
For the problems of serious deformation after laser welding about stainless steel on 0. 07 mm,the millisecond laser and the nanosecond laser were used for the laser welding experiments. Through the optimized process of welding equipment and process parameters,the sealed,overlapping ratio and cross section had been tested. The testing results showed that,using nanosecond laser welding,the overlapping ratio of spots was 35%,which met the demand of sealed and the deformation after welding was less than 0. 03 mm. For the welding of stainless steel in 0. 07 mm,to meet the demand of sealed and deformation was less than 0. 05,the nanosecond laser welding was the best choice.
For the problems of serious deformation after laser welding about stainless steel on 0. 07 mm,the millisecond laser and the nanosecond laser were used for the laser welding experiments. Through the optimized process of welding equipment and process parameters,the sealed,overlapping ratio and cross section had been tested. The testing results showed that,using nanosecond laser welding,the overlapping ratio of spots was 35%,which met the demand of sealed and the deformation after welding was less than 0. 03 mm. For the welding of stainless steel in 0. 07 mm,to meet the demand of sealed and deformation was less than 0. 05,the nanosecond laser welding was the best choice.
引文
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[3]肖扬,丁柳柳,廖文俊,等.奥氏体不锈钢304、316L和321在熔融硝酸盐中的耐腐蚀性[J].材料导报,2016,s1:217-219.
[4]韩豫,陈学东,刘全坤,等.奥氏体不锈钢应变强化工艺及性能研究[J].机械工程学报,2012,48(2):87-92.
[5]刘杰,赵诺,朱振华,等.薄板不锈钢氩弧焊接技术研究[J].家电科技,2015,10:82-84.
[6]杨瑞成,孟威,舒俊,等.热轧410S不锈钢板材钨极氩弧焊焊接接头的组织与性能[J].机械工程材料,2009,33(11):72-75.
[7]何大生,任成强,钟国.电阻焊质量的单片微处理机控制[J].焊接,2013,5:4-4.
[8]王迪,钱泽宇,叶光照,等.基于薄片叠层连接的金属零件三维成型技术探索研究[J].机电工程技术,2017,46(9):163-167.
[9]杨立军,孙贵铮,王金杰,等.A304不锈钢薄板激光焊工艺试验研究[J].电焊机,2011,41(1):66-69.
[10]唐舵,王春明,田曼,等.SUS301L-HT不锈钢激光焊接与MIG焊接对比试验研究[J].中国激光,2015,42(7):90-97.
[11]侯继军,董俊慧,张启良.TC4钛合金激光焊接头显微组织及断口分析[J].热加工工艺,2016,3:35-37.
[12]叶庆丰,王少刚,赵雅萱,等.超薄不锈钢激光焊接头的微观组织与力学性能[J].焊接技术,2017,3:16-20.
[13]姜泽东,陈保国,史维琴.304不锈钢薄板脉冲激光焊焊接热过程数值分析[J].热加工工艺,2011,40(13):148-150.
[14]张岩,谷晓燕,朱丽娟,等.SUS301L薄板不锈钢脉冲激光焊接头的组织特点与硬度分布[J].材料热处理学报,2016,s1:55-60.
[15]张瑄珺,孙小兵,潘涌,等.304不锈钢薄板外观件激光焊接工艺研究[J].应用激光,2016,3:321-325.
[16]朱加雷,徐世龙,焦向东,等.304不锈钢薄板激光搭接焊工艺研究[J].激光与光电子学进展,2015,52(7):154-158.
[17]李云涛,王宁煦,金飞翔.A304不锈钢薄板激光焊接接头微观组织及电化学腐蚀研究[J].重型机械,2014,3:25-28.