一、前言为了节能,在国外已经大力发展不用热处理而直接获得铸态球铁的工艺。这将节省能耗、节省设备、工时及原材料,降低成本和废品率,避免了热处理的变形,缩短了生产周期,所以具有十分明显的经济效益。因此,国外己普遍采用铸态球铁。我厂生产的制冷压缩机中的连杆,曲轴系采用稀土,镁球墨铸铁材料制造。为了提高质量,降低消耗,提高经济效益,84年末开始试产铸态球铁连杆、铸态球铁曲轴,这是一个新的生产工艺。我们采用测定其力 First, the foreword In order to save energy, in foreign countries have been vigorously develop without casting heat directly cast ductile iron craft. This will save energy, save equipment, labor hours and raw materials, reduce costs and rejects, avoid the heat treatment deformation, shorten the production cycle, so it has a very significant economic benefits. Therefore, foreign countries have adopted the cast ductile iron. I plant production of refrigeration compressors in the connecting rod, crankshaft system using rare earth, magnesium nodular cast iron materials. In order to improve quality, reduce consumption and improve economic efficiency, trial production of cast iron ductile iron connecting rod and cast ductile iron crankshaft at the end of 84 is a new production process. We use to determine its force