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18-8铬镍奥氏体不锈钢,由于它的耐蚀性、热稳定性、高温强度及低温性能均较好,近年来应用日益广泛。我厂承制的合成塔内件、中置式锅炉、换热器及贮酸容器等,其中许多都选用了这种材料。我们常用的板厚为6～12毫米,最多的是8毫米。对于该厚度的材料,通常采用手工焊或埋弧焊。我厂过去用手工焊,近年对直径500毫米以上筒体的纵环缝采用双面埋弧自动焊,
18-8 chromium nickel austenitic stainless steel, due to its corrosion resistance, thermal stability, high temperature strength and low temperature performance are better, more and more widely used in recent years. I plant the system of internal components contractor, in the boiler, heat exchangers and acid storage containers, etc., many of which have chosen this material. Our commonly used plate thickness of 6 to 12 mm, up to 8 mm. For the thickness of the material, usually by manual welding or submerged arc welding. I plant in the past by hand welding, in recent years, the diameter of more than 500 mm vertical seam longitudinal double-sided submerged arc welding,