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介绍了采用铁型覆砂铸造４ＪＢ１球铁曲轴的工艺特点和试产效果，实践表明铁型覆砂铸造投资少，见效快，铸件品质好，生产运行成本低，指出铁型覆砂尚需改进的地方。
The technological characteristics and trial production of 4JB1 ductile iron crankshaft cast by iron sand mold are introduced. Practice shows that iron sand mold casting has less investment, quick response, good casting quality and low production and running cost. The place.