根据现在的工艺,含铬高的白口铸铁件如果不完全退火,则具有较高的硬度,而且韧性很低.含铬高的铸铁石墨化退火的强化虽无简单和有效的方法,但缩短白口铸铁退火时间最有效的方法是孕育和低温预处理或高温预处理.研究了孕育剂成份和预处理对冲天炉熔炼高铬白口铸铁石墨化过程的影响. According to the current process, high chromium white cast iron parts, if not completely annealed, have higher hardness and lower toughness. The strengthening of chromium-containing cast iron graphitization anneal, although not simple and effective, is shortened The most effective method of annealing time of white cast iron is inoculation and low temperature pretreatment or high temperature pretreatment.The effect of inoculant composition and pretreatment on the graphitization process of high chromium white cast iron in cupola was studied.