To solve the a problem above-mentioned, it is suggested to make use of in-mold inoculation and new technique of heat-treating.
建议采用型内处理法和热处理新工艺，可望解决上述问题。
From the chemical composition, trace element, inoculation and thermal exchange of metal mold casting, the principle of chill formation and the effective methods for preventing chill were studied.
文章从铸铁的化学成分、微量元素、孕育处理及金属型的热交换方面叙述了产生白口的原理及防白口的有效方法。
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