为了获得贝氏体组织为主要基体的稀土镁球墨铸铁,1970年初,我们对稀土镁球墨铸铁作了一系列等温淬火的加热与等温温度试验研究,得出了合适的工艺参数,同时还作了钼、钼-铜、钒、钼-铜-钒等合金元素对等温淬火稀土镁球铁组织性能的影响,并确定了钼、铜等元素的最佳含量.还作了一系列疲劳性能的试验,并运用这些试验所得出的参数指导了生产东方红大小减速齿轮(原设计采用 In order to obtain rare earth magnesium nodular cast iron with bainite as the main matrix, in early 1970, we made a series of isothermal quenching heating and isothermal temperature experimental research on rare earth magnesium nodular cast iron, obtained the appropriate process parameters, but also made The effects of molybdenum, molybdenum-copper, vanadium, molybdenum-copper-vanadium on microstructure and properties of isothermal quenched rare earth ductile iron were investigated, and the optimum content of molybdenum, copper and other elements was determined. A series of fatigue tests , And use the parameters derived from these experiments to guide the production of red and blue reducer gear (the original design