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不绣钢是现代工业上广泛使用的材料。不锈钢之具有抗腐蚀性能,是因为在钢的表面形成了一层非常稳定的钝化保护膜。钢的表面愈光滑愈易形成紧密完整的钝化膜。当钝化膜在加工过程中遭到破坏对,破口处暴露了底层金属,构成膜—溶液—金属的电池,发生电化学腐蚀。为了得到均匀完整的保护膜、提高不锈钢的耐蚀性,必须洗净表面,去除表面所附的杂质,再行钝化。一、酸洗酸洗的目的是清除不锈钢表面的微小铁
Stainless steel is a widely used material in modern industry. The corrosion resistance of stainless steel is due to the formation of a very stable passivation film on the surface of the steel. The more smooth the surface of the steel, the more easily formed a complete passive film. When the passivation film was damaged in the processing of the right, break exposed at the bottom of the metal, the membrane - solution - metal batteries, the electrochemical corrosion. In order to get a uniform and complete protective film to improve the corrosion resistance of stainless steel, you must wash the surface, remove the surface attached to the impurities, and then passivation. First, the purpose of pickling pickling is to remove the small iron surface of stainless steel