采用金属型覆砂铸造批量生产１９５球铁曲轴，解决了砂型铸造生产球铁曲轴时存在的缩孔、缩松等缺陷问题，实现了无冒口铸造，工艺出品率和铸件成品率均达到９０％以上，球化等级提高到１～２级，石墨球直径达到６级，正火后铸件力学性能达到了ＱＴ８００－２标准，提高了生产效率，降低了生产成本。 The production of 195 ductile iron crankshafts by metal sand casting is solved to solve the defects such as shrinkage cavities and shrinkage during the production of ductile iron crankshafts by casting with sand casting. The casting yield without casting and the finished product rate of casting reaches 90 %, The ball grade to 1 to 2, graphite ball diameter up to 6, after normalizing the mechanical properties of castings to QT800-2 standards, improve production efficiency and reduce production costs.