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Proceedings Paper

Effect of welding parameters on high-power diode laser welding of thin sheet
Author(s): Antti Salminen; Anssi Jansson; Veli Kujanpaa
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Paper Abstract

High power diode laser (HPDL) is the newest laser tool for industrial manufacturing. The most promising areas of application of HPDL are thin sheet welding and hardening. The HPDL has several advantages and disadvantages compared to lasers CO2 and Nd:YAG lasers currently used for welding. There is quite a few industrial applications in which diode laser is the most suitable laser. A typical industrial installation consists of a HPDL, an industrial robot, work piece manipulation and safety enclosures. The HPDL welding process is at this moment conduction limited and has therefore different parameters than the keyhole welding. In this study the basic HPDL welding parameters and the effect of the parameters on the welding process, weld quality and efficiency are examined. Joint types tested are butt joint and fillet lap joint. The parameters tested are beam intensity, welding speed, spot size, beam impingement angle. The materials tested are common carbon steel and stainless steel. By the experiments carried out it can be seen that all of these parameters have an effect on the weld quality and the absorption of the laser power during welding. The higher the beam intensity is the shorter also the throughput time is. However, in case of fillet joint the maximum welding speed and best visual out look are achieved with totally different set of parameters. Based on these experiments it can, however, be seen that reliable welding parameters can be established for the welding of various industrial products. The beam quality of the diode laser is not optimum for high speed keyhole welding but it is a flexible tool to be used for different joint types.

Paper Details

Date Published: 19 June 2003
PDF: 10 pages
Proc. SPIE 4973, High-Power Diode Laser Technology and Applications, (19 June 2003); doi: 10.1117/12.478366
Show Author Affiliations
Antti Salminen, Lappeenranta Univ. of Technology (Finland)
Anssi Jansson, VTT Industrial Systems (Finland)
Veli Kujanpaa, Lappeenranta Univ. of Technology (Finland)
VTT Industrial Systems (Finland)

Published in SPIE Proceedings Vol. 4973:
High-Power Diode Laser Technology and Applications
Mark S. Zediker, Editor(s)

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