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首页> 外文会议>High-Power Lasers in Civil Engineering and Architecture >Underwater cutting of stainless steel with the laser transmitted through optical fiber
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Underwater cutting of stainless steel with the laser transmitted through optical fiber

机译：通过光纤传输的激光对不锈钢进行水下切割

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Abstract: By using a fiber-transmitted laser beam and high pressure oxygen gas, underwater laser cutting of thick stainless steel was demonstrated. In the field of decommissioning, underwater cutting of nuclear facilities is desirable. For this operation, it is very useful to apply the laser beam transmitted through optical fiber because of flexibility. We used chemical oxygen-iodine laser for fundamental experiments with laser beam power of 1-7kW. And for this experiments, we designed cutting heads with some ideas for nozzles and optics. The nozzles have various nozzle diameters and two kinds of shapes; one is conical, and the other is divergent. The latter was designed to make a supersonic gas flow by using high pressure oxygen gas. And we prepared several focusing optics with different focal lengths, which have influence on both the focal spot diameter and the depth of focus of the laser beam that incidents upon a workpiece. Cutting ability was measured by cutting a tapered workpiece. From this investigation it was clear that the nozzle-to-workpiece distance that was about 10mm had the large tolerance of deviation, and there was a suitable optics according to laser power. !4
机译：摘要：通过使用光纤传输的激光束和高压氧气，对厚不锈钢的水下激光切割进行了演示。在退役领域，水下切割核设施是可取的。对于该操作，由于柔性，施加通过光纤传输的激光束非常有用。我们使用化学氧碘激光器进行基础实验，激光束功率为1-7kW。在本实验中，我们设计了一些针对喷嘴和光学元件的切割头。喷嘴具有各种喷嘴直径和两种形状。一个是圆锥形的，另一个是发散的。后者被设计为通过使用高压氧气使超声波气流通过。并且我们准备了几种具有不同焦距的聚焦光学器件，它们对焦点直径和入射到工件上的激光束的聚焦深度都有影响。通过切削锥形工件来测量切削能力。从该调查中可以明显看出，喷嘴到工件的距离约为10mm，具有较大的偏差容差，并且根据激光功率有合适的光学器件。 ！4

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