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生产镀锌板的热浸镀机组中的各种轴承、沉没辊等受锌液的强烈腐蚀、对热镀锌的生产和产品质量有很大影响.热喷涂耐锌液腐蚀涂层是解决这一难题的一种重要的防护方法.本文介绍了近年来国内外关于耐锌液腐蚀热喷涂涂层材料的开发及相应的涂层制备技术.系统分析了各涂层材料在锌液中的腐蚀机理和封孔剂在热喷涂涂层耐锌液腐蚀中的重要性,并指出涂层中微裂纹的控制是提高其耐锌液腐蚀性能的方向.
Galvanized sheet hot-dip galvanizing line in a variety of bearings, sunken rollers and other strong corrosion by the zinc liquid, the production of hot-dip galvanizing and product quality have a great impact on the thermal spray-resistant zinc coating solution is to solve this An important protection method for a difficult problem.This paper introduces the development of the zinc-based corrosion-resistant thermal spray coating material and the corresponding coating preparation technology at home and abroad in recent years.This paper systematically analyzes the corrosion of each coating material in zinc solution Mechanism and the importance of sealing agent in the corrosion resistance of thermal sprayed coatings against zinc. It is pointed out that the control of microcracks in coating is the direction to improve the corrosion resistance of zinc coating.