Influence of Process Parameters on Bulging Region of High Strength Steel in Narrow Gap Laser Welding with Wire Filler

HAN Pengbo; HUANG Ruisheng; SUN Jingtao; TENG Bin; CAO Hao; WU Zhendong

doi:10.7512/j.issn.1001-2303.2022.10.16

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Influence of Process Parameters on Bulging Region of High Strength Steel in Narrow Gap Laser Welding with Wire Filler
Vol. 52, Issue 10, Pages: 107-113(2022)
DOI： 10.7512/j.issn.1001-2303.2022.10.16

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韩鹏薄，黄瑞生，孙静涛，等.工艺参数对高强钢窄间隙激光填丝焊鼓胀区影响［J］.电焊机，2022，52（10）：107-113.

HAN Pengbo, HUANG Ruisheng, SUN Jingtao, et al.Influence of Process Parameters on Bulging Region of High Strength Steel in Narrow Gap Laser Welding with Wire Filler[J].Electric Welding Machine, 2022, 52(10): 107-113.
韩鹏薄，黄瑞生，孙静涛，等.工艺参数对高强钢窄间隙激光填丝焊鼓胀区影响［J］.电焊机，2022，52（10）：107-113. DOI： 10.7512/j.issn.1001-2303.2022.10.16.

HAN Pengbo, HUANG Ruisheng, SUN Jingtao, et al.Influence of Process Parameters on Bulging Region of High Strength Steel in Narrow Gap Laser Welding with Wire Filler[J].Electric Welding Machine, 2022, 52(10): 107-113. DOI： 10.7512/j.issn.1001-2303.2022.10.16.

摘要

研究了主要工艺参数对高强钢窄间隙激光填丝焊鼓胀区的影响。通过测量不同工艺条件下焊缝鼓胀区的宽度,W,max,及其距焊缝表面的距离,d,，建立了主要焊接参数与鼓胀区尺寸之间的关系。研究结果表明焊丝与母材吸收能量的比例大小是影响鼓胀区宽度及位置主要因素，减小激光功率、增加焊速和送丝速度能够减小鼓胀区。进一步提出了不同鼓胀角,β,＜30°与,β,＞60°的工艺区间，并且减小鼓胀角,β,是获得大深宽比条件下无凝固裂纹焊缝的有效方法。

Abstract

The influence of the main process parameters on the bulging region of high-strength steel in narrow gap laser welding with filler wire was studied. By measuring the width ,W,max, of the weld bulging region and its distance d from the weld surface under different process conditions, the relationship between the main welding parameters and the bulging region size was established. The research results show that the ratio of the energy absorbed by the welding wire to the base metal is the main factor affecting the width and position of the bulging region. Reducing the laser power, increasing the welding speed and wire feeding can reduce the bulging region. The process range of different bulging angles ,β,<,30° and ,>,60° is further proposed, and reducing the bulging angle ,β, is an effective method to obtain solidification-free crack-free welds under the condition of large aspect ratio.

关键词

窄间隙激光填丝焊高强钢凝固裂纹鼓胀区

Keywords

narrow gap laser weldinghigh-strength steelsolidification crackingbulging region

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