QT350-22AL厚大断面低温球墨铸铁件熔炼生产工艺

Smelting Process of QT350-22AL Heavy Section Ductile Iron Castings

研究了QT350-22AL锥形支撑厚大断面低温球铁件。通过合理选择、控制化学成分,以及采用轻、重稀土球化剂配合使用,采取现场倒包球化和多次孕育处理熔炼生产工艺技术,可以稳定生产出QT350-22AL厚大断面低温球铁锥形支撑铸件。

QT350-22AL conical supported heavy section low temperature nodular iron castings were studied. Through reasonable selection and control of chemical composition, combined use of light and heavy rare earth spheroidizing agents, on-site ladle spheroidizing and multiple inoculation melting production technology,QT350-22AL thick large section low temperature ductile iron conical support castings can be stably produced.