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1.概述当钢中含铬量大于12％时,表面会形成致密的铬氧化膜,从而提高其耐腐蚀性能和抗氧化的能力,这种钢叫不锈钢。含铬18％、镍8％左右的钢简称18～8型不锈钢。能从高温缓慢冷却不发生组织变化而仍保持奥氏体组织,故又称奥氏体不锈钢。根据钢的含碳量,奥氏体的不锈钢可分成一般含碳量(C≤0.14％)、低碳(C≤0.06％)及超低碳(C≤0.03％)三种。对耐腐蚀性能要求较高的工件最好采用低碳、
1. Overview When the steel containing more than 12% chromium, the surface will form a dense chromium oxide film, thereby enhancing its corrosion resistance and oxidation resistance, this steel is called stainless steel. 18% chromium, nickel 8% of the abbreviation 18 ~ 8 type of stainless steel. Slow cooling from high temperature does not occur while maintaining the organization of austenitic tissue, it is also known as austenitic stainless steel. According to the carbon content of steel, austenitic stainless steel can be divided into general carbon content (C ≤ 0.14%), low carbon (C ≤ 0.06%) and ultra-low carbon (C ≤ 0.03%) three. Corrosion of the higher performance of the workpiece is best to use low-carbon,