Laser power coupling efficiency in conduction and keyhole welding of austenitic stainless steel

被引：28

作者：

Nath, AK ^{[1
]}

Sridhar, R ^{[1
]}

Ganesh, P ^{[1
]}

Kaul, R ^{[1
]}

机构：

[1] Ctr Adv Technol, Ind Laser Sect CO2, Indore 452013, India

来源：

SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES | 2002年 / 27卷 / 3期

关键词：

laser welding; coupling efficiency; conduction loss; austenitic stainless steel; keyhole welding; solidification cracking;

D O I：

10.1007/BF02703659

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser welding of thin sheets of AISI 304 stainless steel was carried out with high power CW CO2 laser. The laser power utilized in the welding process was estimated using the experimental results and the dimensionless parameter model for laser welding; and also the energy balance equation model. Variation of laser welding efficiency with welding speed and mode of welding was studied. Welding efficiency was high for high-speed conduction welding of thin sheets and also in keyhole welding process at high laser powers. Effect of pre-oxidization of the surface and powder as filler material on laser power coupling is also reported. The paper also discusses effect of microstructure on the cracking susceptibility of laser welds.

引用

页码：383 / 392

页数：10

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