A modeling study on the influence of pulse shaping on keyhole laser welding

被引：12

作者：

Mohanty, PS ^{[1
]}

Kar, A ^{[1
]}

Mazumder, J ^{[1
]}

机构：

[1] UNIV CENT FLORIDA,CREOL,ORLANDO,FL 32826

来源：

JOURNAL OF LASER APPLICATIONS | 1996年 / 8卷 / 06期

关键词：

laser welding; keyhole; pulse shaping; mathematical modeling;

D O I：

10.2351/1.4745435

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A theoretical analysis describing the effects of pulse shaping on keyhole laser welding is presented. Calculation of the keyhole profile and melt pool dimensions was performed by the balancing of surface fortes and energy at the liquid-vapor and solid-liquid interfaces in three dimensions. The effect of temporal pulse shape on weld dimensions has been examined over a range of power densities, pulse times and pulse frequencies. Several pulse types (e.g., top-hat, Gaussian, ramp-up and ramp-down pulses) have been considered, Pulse shaping showed significant effect on the weld dimensions, The predicted width and penetration depth of welds with ramp-up and ramp-down pulse shapes were greater than those obtained with Gaussian and top-hat pulses, The theoretical predictions have been compared with experimental data. Furthermore, the response of two different materials with considerably different physical properties (stainless steel and aluminum) has been analysed.

引用

页码：291 / 297

页数：7

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[2]

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[3]

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