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鞍钢焊管厂镀管车间,为了提高镀锌焊管质量,采用了氮吹试验新工艺,即将炉焊钢管,在锌锅工序镀完锌以后,在外吹工序和内吹工序处,采用氮气来代替压缩空气和蒸气,去吹刷管子内外表面。经过试验后,获得优良成效。因为经过热镀锌后的钢管,在管子的内外表面上,仍存有一定量的浮渣夹杂和多余锌液。这些浮渣夹杂和多余锌液,如果不通过压
In order to improve the quality of galvanized pipe, Anshan Iron and Steel Pipe Plant, using nitrogen blowing test new technology, is about to fire-welded steel pipe, zinc pot after the process of zinc coating, blowing process and blowing process at the Department, using nitrogen instead of compression Air and steam to blow the inner and outer surfaces of the tube. After testing, get good results. Because after the hot-dip galvanized steel pipe, the inner and outer surfaces of the pipe, there is still a certain amount of scum inclusions and excess zinc solution. These scum inclusions and excess zinc solution, if not by pressure