针对普通灰铸铁连铸铁管存在的抗拉强度低、耐水压性能差、易渗漏等问题,本文提出在其连铸过程中加入少量稀土硅铁合金和采取特殊的处理方法,以获得组织致密、强度高、耐水压性能好的铸铁管,因而具有明显的技术经济价值。 Aiming at the problems of low tensile strength, poor water pressure resistance and easy leakage of common gray cast iron continuous cast iron pipes, this paper proposes to add a small amount of rare earth ferrosilicon alloy during the continuous casting process and to adopt special treatment methods to obtain dense, High strength, good pressure resistance of cast iron pipe, which has obvious technical and economic value.