铬15钼3含铜钛钒白口铸铁,大批量应用在杂质泵过流零件以来,生产工艺基本稳定,热处理工艺也基本上满足生产要求。生产统计表明,中小型杂质泵过流零件热处理工艺很稳定,而如10PH,250PN等大型泵件(结构复杂的叶轮)的热处理稳定性就稍差。其中,表面脱碳、局部过热和表面 Chromium 15 Molybdenum 3 Copper-containing titanium vanadium white cast iron, high-volume applications in the impurity pump over-current parts, the production process is basically stable, heat treatment process basically meet the production requirements. Production statistics show that small and medium impurities pump over-current part of the heat treatment process is very stable, and such as 10PH, 250PN and other large pump (complex structure of the impeller) heat treatment stability is somewhat worse. Among them, the surface decarburization, local overheating and the surface