铸钢生产中,为了获得优质、致密的铸钢件,在设计铸造工艺时,往往需要加上金属补贴。采用这一工艺,虽能达到控制凝固顺序的目的,但很不经济。因为,金属补贴对于铸件结构来说是多余的,它不仅多消耗钢水,还增加了造型时的砂箱面积,以及清理时的工作量,所以,国外从70年代就开始研究应用发热补贴,以取代金属补贴。近几年来,我国在这方面的研究应 Cast steel production, in order to obtain high-quality, dense castings, castings in the design process, often need to add metal subsidies. Using this process, although to achieve the purpose of controlling the order of coagulation, but it is not economical. Because metal subsidies for the cast structure is superfluous, it not only consume more molten steel, also increased the molding sandbox area, and clean-up workload, therefore, from abroad in the 1970s began to study the application of heat subsidies to Replace metal subsidies. In recent years, our country’s research in this area should be