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Method and apparatus for the laser cutting of stainless steel, coated steel, aluminum or aluminum alloys with bifocal optical component
Method and apparatus for the laser cutting of stainless steel, coated steel, aluminum or aluminum alloys with bifocal optical component
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机译：用于激光切割具有双焦点光学组件的不锈钢，涂层钢，铝或铝合金的方法和设备
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摘要
Method and apparatus for cutting a workpiece made of structural steel or mild steel, i.e. alloy or non-alloy steels, by the use of a transparent or reflecting optical unit for focusing a laser beam, and of an assist gas for the laser beam. The optical unit is of the multifocus type and is chosen from lenses, mirrors and combinations thereof. The assist gas is nitrogen or a nitrogen/oxygen mixture. The method of the invention makes it possible to obtain a low or almost zero oxidation of the cut face and to do so while increasing the cutting performance by about 40% compared with a laser cutting method using nitrogen or a nitrogen/oxygen mixture.
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