连续铸铁管生产装置的关键部件之一就是外结晶器。其工作条件非常恶劣,温度梯度变化大;受水压以及铁水冲击的影响大。要求外结晶器具有以下特性:良好的导热性、可塑性、耐压性和耐磨性。目前国内大多数铸管厂使用紫铜外结晶器,具备上述优点,但成本高,也有用铸铁结晶器的。寿命短 One of the key components of a continuous cast iron pipe production plant is the external mold. Its working conditions are very harsh, temperature gradient changes greatly; affected by water pressure and the impact of hot metal. External crystallizer requirements have the following characteristics: good thermal conductivity, plasticity, pressure resistance and wear resistance. At present, most domestic copper pipe casting plant using copper outside the mold, with the above advantages, but the high cost, but also useful cast iron mold. Short life expectancy