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热浸镀锌层是汽车车身用高强度镀锌钢板具有良好的耐蚀性能的保证。激光焊接高强度镀锌钢板时,镀锌层不可避免地遭到烧损。采用浓度为3%的盐水,对不同激光工艺参数的焊接件进行了腐蚀试验。研究结果表明,在不同工艺参数的条件下,激光焊接高强度镀锌钢板接头的腐蚀速度不同,但平均速度与母材的腐蚀速度大体相当。
Hot-dip galvanized layer is a car body with high strength galvanized steel with good corrosion resistance guarantee. When laser welding high-strength galvanized steel sheet, galvanized layer is inevitably burned. Corrosion tests were carried out on the welding parts with different laser parameters by using 3% brine. The results show that the corrosion rate of laser welded high strength galvanized steel plate joints is different under different process parameters, but the average velocity is almost equal to the corrosion rate of base metal.