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Mitsubishi new technology improves welding quality and speed of fiber laser welding machine


技术,与使用热轧材料的传统焊接技术相比,新技术能将飞溅的熔融金属(飞溅物)减少95%或以上。 It is reported that Mitsubishi Electric and its brand Tada Electric are jointly developing a new type of fiber laser welding technology. Compared with the traditional welding technology using hot rolled materials, the new technology can reduce splashing molten metal (spatter) by 95% or more. .

新光纤激光器技术极大提高激光焊接质量

焊接的质量和速度,而新型低飞溅物技术提高了用于钢铁加工、汽车生产和电气设备安装等工业应用的高功率光纤激光焊接的焊接质量和生产率。 Traditional spatter levels reduce the quality and speed of fiber laser welding, while new low spatter technology improves the welding quality and productivity of high-power fiber laser welding for industrial applications such as steel processing, automotive production, and electrical equipment installation. The new technology is expected to be incorporated into laser welding machines that will appear in 2019.

照射的区域中形成深穿透孔和熔融金属池。 During laser welding, deep penetration holes and molten metal pools are formed in the area irradiated by the laser beam . 功率而获得更大的穿透力,但是这样会产生更多的飞溅物。 It is possible to achieve greater penetration by increasing the laser power, but this will produce more spatter. Therefore, after the two companies studied the molten pool under various welding conditions and performed more than 10,000 experiments with a high-speed camera, they found that by radiating a low-power laser beam around the high-power beam, the generation of spatters could be greatly suppressed. 点聚焦的高功率激光器周围同时通过低功率激光器照射,使用10kW高功率光纤激光器进行的测试证实,与以相同焊接速度工作的传统系统相比,飞溅物可能减少95%以上。 Subsequently, by using a newly developed beam-shaping system installed at the output end of the fiber, a high-power laser focused at the same point was illuminated by a low-power laser at the same time. Compared to the system, spatter may be reduced by more than 95%.

In traditional fiber laser welding, spatters increase significantly at certain welding speeds, so the welding speed needs to be reduced to ensure welding quality. After using this new technology, the number of spatters generated by increasing the welding speed is very small, so that the laser power can be fully utilized.

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