SUS301L不锈钢激光填丝焊与MAG焊接头对比

赵雪山; 吴世彪; 段珍珍

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SUS301L不锈钢激光填丝焊与MAG焊接头对比
Comparative experimental study on SUS301L stainless steel by laser filled wire welding and MAG welding
2018年48卷第10期页码：69-73
纸质出版：2018
DOI：
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赵雪山, 吴世彪, 段珍珍. SUS301L不锈钢激光填丝焊与MAG焊接头对比[J]. 电焊机, 2018,48(10):69-73. DOI：

ZHAO Xueshan, WU Shibiao, DUAN Zhenzhen. Comparative experimental study on SUS301L stainless steel by laser filled wire welding and MAG welding[J]. Eletric Welding Machine2018, 48(10): 69-73. DOI：

摘要

以不锈钢SUS 301L 1 mm+2 mm搭接结构为对象

对比研究激光填丝焊和MAG焊对焊缝成形、接头组织及性能的影响规律。结果表明:激光填丝焊焊缝成形优于MAG焊

接头余高和熔宽明显降低;激光填丝焊接头的显微组织为细小奥氏体柱状晶

MAG焊接头为粗大的柱状奥氏体晶与等轴晶;激光填丝焊焊缝整体硬度略高于MAG焊

接头的拉剪强度高于MAG焊

为727.3 MPa

可达到母材的73%

两者均断裂在焊缝处

呈典型的韧性断裂。

Abstract

Laser filled wire welding and MAG welding of SUS301 L sheets with the lap joint form 1 mm +2 mm were carried out

and comparative researched the effect of the two welding method on welding appearance

microstructure and properties. The result showed that the laser filled wire welding had a better weld formation than MAG welding

the reinforcement and weld width of weld significantly reduced. Microstructure of laser filled wire welding joint consisted of fine columnar austenitic dendritic crystals

microstructure of MAG welding joint consisted of coarse columnar austenite and isometric crystal. Laser filled wire welding had a higher weld hardness than MAG welding

and the tensile shear force was 727.3 MPa

up to 73% of base metal. Both of them break at the weld

in a classical ductile way.