十字万向联轴器广泛用于轧钢、汽车、机车、船舶及其他通用机械,多用于倾角变化大和重载的场合。十字轴是关键零件,尺寸精度,形位公差及综合力学性能要求都很高。众所周知,渗碳淬火产生膨胀变形,容易造成尺寸超差。因此,找出膨胀变形规律,协调好冷热加工尺寸关系很有意义。 Cross universal coupling is widely used in rolling, automobiles, locomotives, ships and other general machinery, used for large changes in inclination and heavy occasions. Cross shaft is the key parts, dimensional accuracy, shape and tolerance and comprehensive mechanical properties are high. As we all know, carburizing and quenching produce expansion and deformation, easily lead to size tolerance. Therefore, to find the law of expansion and deformation, coordinate the relationship between hot and cold processing size makes sense.