保护渣浇铸是防止连铸板坯表面纵裂和表面夹渣等缺陷产生的重要工艺措施。武钢第二炼钢厂引进了三台R10.3米全弧形大型板坯连铸机。开工期间,还进口了大量连铸保护渣。为了使保护渣自给,根据北京钢铁研究总院提供的配方和制渣要求,武钢第二炼钢厂生产了三种连铸保护渣(BZW-1号、BZW-2号、BZW-3号)。经过试用,证明其性能良好,已经于1979年8月初投入生产。迄至12月初,用自产保护渣浇铸出七万五千多吨表 Mold powder casting is to prevent continuous casting slab surface cracks and surface defects such as the production of important process measures. Wuhan Iron and Steel No. 2 Steel Plant introduced three R10.3 meters large arc-shaped slab caster. During the start, but also imported a large number of continuous casting mold flux. In order to make the mold powder self-sufficient, three types of continuous casting mold fluxes (BZW-1, BZW-2 and BZW-3) were produced at No.2 Steel Plant of WISCO according to the formula and slag preparation requirements provided by Beijing Iron and Steel Research Institute . After trial to prove its good performance, has been put into production in early August 1979. As of early December, more than 75,000 tons of watches were cast from self-produced mold fluxes