Influence of oxide film on weld characteristics of mild steel in CO2 laser welding

被引：0

作者：

Ono, K ^{[1
]}

Adachi, K ^{[1
]}

Matsumoto, Y ^{[1
]}

Miyamoto, I ^{[1
]}

Inoue, T ^{[1
]}

Narita, R ^{[1
]}

机构：

[1] KOMATSU Ltd, Mfg Engn Dev Ctr, Hirakata, Osaka 5731011, Japan

来源：

ICALEO (R)'99: PROCEEDING OF THE LASER MATERIALS PROCESSING CONFERENCE, VOL 87, PTS 1 AND 2 | 2000年 / 87卷

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Influence of oxide film, such as laser cutting edges or mill scale, on weld characteristics of mild steel in CO2 laser welding was investigated. Autogenous laser welding tests with oxidized face of joint were carried out. A lot of spatters were observed during welding operation and therefore the top of bead was underfilled and irregular. Bead width of surface was reduced and side walls of weld metal were nearly parallel. In microstructure, ferrite on gamma grain boundary and ferrite side plate were larger and vickers hardness was lower. Porosity consisted of CO, CO2, H-2 and sometime He were generated. Reason of the result was discussed in this paper with observation of laser induced plasma and comparing with Electron Beam Welding.

引用

页码：D83 / D91

页数：3

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