Hybrid welding of galvanized steel sheet

被引：0
|
作者：
Gu, HP [1 ]
Mueller, R [1 ]
机构：
[1] Powerlasers Adv Technol Ctr, Kitchener, ON N2G 2Y5, Canada
来源：
20TH ICALEO 2001, VOLS 92 & 93, CONGRESS PROCEEDINGS | 2001年
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Laser lap welding of galvanized steel sheets under zero gap conditions using an Nd:YAG laser is difficult since there is a considerable amount of Zn vapor generated between the metal sheets which must be vented out of the weld pool. Compared to a high power CO2 laser, a 3 kW Nd:YAG laser does not have enough energy density to keep the keyhole open for a sufficient time for Zn vapor to escape. By combining a YAG laser with a TIG welding process, the additional energy from the TIG plasma helps to sustain the keyhole during welding and improve the weld quality.
引用
收藏
页码：135 / 139
页数：5
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