提高球化热处理的加热温度或延长其保温时间，都有利于碳化物的团球化。
It is found that raising the temperature and prolonging soaking time of spheroidizing heat treatment promoting the spheroidization of carbides.
本试验研究了球化热处理的加热温度、保温时间及合金化学成分对于碳化物团球化的影响。
The influences of temperature and soaking time of such treatment and the alloy compositions on spheroidization of carbides were studied.
着重论述了材质选择，球化孕育处理，热处理和离心铸造工艺参数控制等问题。
It emphatically discussed the problems such as material selection, spheroidizing inoculation treatment, heat treatment, technological parameter control of centrifugal casting, etc.
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