PA position full penetration high power laser beam welding of up to 30 mm thick AlMg3 plates using electromagnetic weld pool support

被引：89

作者：

Avilov, V. V. ^{[1
]}

Gumenyuk, A. ^{[1
]}

Lammers, M. ^{[1
]}

Rethmeier, M. ^{[1
]}

机构：

[1] BAM Fed Inst Mat Res & Testing, Div Safety Joined Components, D-12205 Berlin, Germany

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2012年 / 17卷 / 02期

关键词：

High power laser beam welding; Full penetration; Electromagnetic weld pool support;

D O I：

10.1179/1362171811Y.0000000085

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Full penetration 15 kW Yb fibre laser butt welding of thick AlMg3 (AW 5754) plates was performed in PA position. A contactless inductive electromagnetic weld pool support system was used to prevent gravity dropout of the melt. The welding speed needed to achieve 20 mm penetration was similar to 0.5 m min(-1). An ac power supply of similar to 244 W at 460 Hz was necessary to completely suppress gravity dropout of the melt and eliminate sagging of the weld pool root side surface. The oscillating magnetic field can suppress the Marangoni convection in the lower part of the weld pool. The system was also successfully used in the full penetration welding of 30 mm thick AlMg3 plates.

引用

页码：128 / 133

页数：6

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