研究结果表明,含1％铜-1％锰合金球铁的显微组织和机械性能与试棒尺寸有关。一、试验方法表1列出了不同直径试棒的化学成分与显微组织的关系。球化处理全部使用2％Fe-Si-Mg-Ce(Mg5～7％,Ce0.8～1％),然后在包内用1％的硅铁(Si70％)孕育处理。试棒铁水用40公斤容量的中频感应电炉熔炼,称为L系列;用6吨 The results show that the microstructure and mechanical properties of 1% Cu-1% Mn alloy ductile iron are related to the size of test bar. First, the test method Table 1 lists the different diameters of the chemical composition of the test rod and the relationship between microstructure. All the spheroidizing treatment was performed using 2% Fe-Si-Mg-Ce (Mg5-7%, Ce0.8-1%) and then in the bag with 1% ferrosilicon (Si70%). Test rod hot metal with a capacity of 40 kg medium frequency induction furnace smelting, known as the L series; with 6 tons