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首页> 外文期刊>Journal oflaser Applications >Multibeam fiber laser cutting
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Multibeam fiber laser cutting

机译：多光束光纤激光切割

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摘要

The appearance of the high power high brilliance liber laser has opened for new possibilities in laser materials processing. In laser cutting this laser has demonstrated high cutting performance compared to the dominating cutting laser, the CO_2 laser. However, quality problems in fiber-laser cutting have until now limited its application to metal cutting. In this paper the first results of proof-of-principle studies applying a new approach (patent pending) for laser cutting with high brightness and short wavelength lasers will be presented. In the approach, multibeam patterns are applied to control the melt flow out of the cut kerf resulting in improved cut quality in metal cutting. The beam patterns in this study are created by splitting up beams from two single mode fiber lasers and combining these beams into a pattern in the cut kerf. The results are obtained with a total of 550 W of single mode fiber laser power. Burr free cuts in 1 mm steel and aluminum and in 1 and 2 mm AISI 304 stainless steel is demonstrated over a wide range of cutting rates. The industrial realization of this approach is foreseen to be performed by either beam patterning by diffractive optical elements or multibeam fiber laser arrangements.
机译：高功率高亮度解放激光器的出现为激光材料加工提供了新的可能性。与主要的切割激光器CO_2激光器相比，该激光器在激光切割中表现出较高的切割性能。但是，迄今为止，光纤激光切割中的质量问题已将其限制在金属切割中。本文将介绍使用新方法（专利申请中）进行高亮度和短波长激光切割的原理验证研究的第一批结果。在该方法中，采用多光束图案来控制熔体从切缝的流出，从而提高了金属切割的切割质量。本研究中的光束图案是通过将两个单模光纤激光器的光束分开并将这些光束组合成切缝中的图案而创建的。使用总共550 W的单模光纤激光功率可获得结果。在广泛的切削速率范围内，证明了1毫米钢和铝以及1毫米和2毫米AISI 304不锈钢的无毛刺切割。可以通过衍射光学元件的光束构图或多光束光纤激光器装置来实现这种方法的工业实现。

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