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介绍了无曲柄砂芯、铁型覆砂铸造３７５球铁曲轴的工艺及装备，提出了组合铁型设计的新观点，阐明了铸造应力、铁型寿命、铸型排气等技术关键问题。
This paper introduces the technology and equipment of crankshaft with crankshaft made of crankshaft without crankshaft and iron sand mold, puts forward the new viewpoint of combined iron design, and expounds the key technical problems of casting stress, iron life and mold exhaust.