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为了不断满足低硫(≤30ppm)不锈钢的需求,日本新日铁室兰厂研究和试验用LD-RH·OB法进行不锈钢的强烈脱硫,发展了一种低硫不锈钢生产的新技术:RH-SCS(Superclean Steelmaking)法。该法主要采用融渣精炼,铁水首先经KR法脱硫,然后将低硫铬铁装入LD中,再进行RH处理,将CaO-CaF_2渣系放入真空室以前,钢液在真空下脱碳、脱氧,于是在钢包液面的LD转
In order to continuously meet the demand of low-sulfur (≤30ppm) stainless steel, Japan’s Nippon Steel Muroran Research and Test Co., Ltd. has developed strong desulfurization of stainless steel with the LD-RH · OB method and developed a new technology for producing low-sulfur stainless steel: RH- SCS (Superclean Steelmaking) method. The method mainly adopts the slag refining, the molten iron is firstly desulfurized by the KR method, and then the low-sulfur ferrochromium is loaded into the LD, and then the RH treatment is carried out. Before the CaO-CaF2 slag system is placed in the vacuum chamber, the molten steel is decarburized under vacuum , Deoxidation, then LD ladle liquid level