制造大型空分设备,厚大铝制零部件的下料是个关键。我们三个单位组成了三结合攻关小组,经半年多的努力,终于攻下厚大铝合金等离子切割的技术难关,顺利地投入了生产。1.切割气体切割厚度在80毫米以下的铝合金时,用氮气尚可满足要求,氮气纯度要求不低于99.5%,否则不能正常切割。当切割厚大铝合金板时,需在氮中加入一定量的氢,这对提高切割能力和质量有显著效果。这是因为氢对电极 Manufacturing large-scale air separation equipment, thick aluminum parts cutting is a key. Our three units formed a three-pronged research team. After more than six months of hard work, we finally tackled the technical difficulties of plasma cutting of thick aluminum alloy and smoothly put into production. 1. cutting gas cutting thickness of 80 mm below the aluminum alloy, nitrogen can still meet the requirements of nitrogen purity requirements of not less than 99.5%, otherwise it can not be properly cut. When cutting thick aluminum alloy plate, the need to add a certain amount of nitrogen in the hydrogen, which improve the cutting ability and quality have a significant effect. This is because of the hydrogen counter electrode