Abstract
The introduction of the high power fiber laser with brilliant beam quality has enabled the rapid development of remote laser welding (RLW). This paper presents a theoretical review of remote laser welding. As a promising technology, RLW offers increased flexibility, high operational speed, and reduced cycle time to process a wide range of workpieces. This study presents the typical characteristics of RLW with high power fiber lasers. It also investigates the influence of process parameters such as laser power, welding speed, shielding gas supply, beam inclination and focal position on the weld seam quality.
Highlights
Remote laser welding (RLW), a non-contact robotic laser welding technique, has been developed and implemented to improve the productivity and flexibility of conventional laser welding [1]
The introduction of the high power fiber laser with brilliant beam quality has enabled the rapid development of remote laser welding (RLW)
This study presents the typical characteristics of RLW with high power fiber lasers
Summary
Remote laser welding (RLW), a non-contact robotic laser welding technique, has been developed and implemented to improve the productivity and flexibility of conventional laser welding [1]. The remote welding process is characterized by a long focal length (up to 1600 mm), a high-power and brilliant-quality laser source, and beam deflection by the scanner [3,4,5]. The suitable wavelength of high-power fiber lasers, combined with excellent beam quality, makes them a promising alternative to conventional CO2 and Nd: YAG lasers in RLW applications. Compared to conventional laser welding, a greater number of process parameters have to be taken into account in remote welding applications. These parameters can be primarily divided into the areas of beam quality, processing parameters, and material properties [6]
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