本文针对提高铸钢件冒口补缩效率问题，给出了微珠保温冒口的配方及生产工艺；
This article is written to explain how to improve the efficiency of riser feeding for cast steel items.
保温冒口的作用是通过延长冒口凝固时间来提高冒口的补缩效率。
The effect of heat insulting feeder is to increase the feeding effect of the feeder through prolonging its solidification duration.
采用发热保温冒口，由于冒口的补缩效率提高，缩松倾向明显减少。
The distribution of porosity defects can be reduced to the least by using exothermic insulating riser.
该技术能提高冒口工艺设计效率与精度，缩短设计周期，保证产品质量，提高工艺出品率。
The technology can improve riser design efficiency and accuracy, shorten the design period and ensure the casting quality, and increase casting process product yield.
该技术能提高冒口工艺设计效率与精度，缩短设计周期，保证产品质量，提高工艺出品率。
The technology can improve riser design efficiency and accuracy, shorten the design period and ensure the casting quality, and increase casting process product yield.
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