用金属型铸造球铁是生产高质量球铁铸件的一种好方法，它不但能够改善工人的劳动环境，提高生产效率，降低成本，而且能够明显地提高铸件的力学性能。用金属型生产铸态球铁的关键是消除铸态白口组织TCB－1．5型挂车轮我是一种结构比较简单的铸件，材质QT450－10，每件重量14kg Casting ductile iron with metal is a good way to produce high quality ductile iron castings. It not only improves workers’ working environment, increases production efficiency and reduces costs, but also significantly improves the mechanical properties of castings. The key to producing cast ductile iron with metal type is to eliminate the TCB-1.5 type cast car wheel from the as-cast white castings. I am a relatively simple structure casting material QT450-10, weighing 14kg