一般说来,高频淬火后的变形比整体淬火后的小,但在实际生产中,有些零件,特别是杆状零件的高频淬火变形往往比较严重,泰山—25拖拉机一轴就是这种情况。该工件(图1)在高频淬火后的变形一般均超出技术要求(0.l毫米),甚至达1毫米以上。通过分析变形数据,发现其淬火变形与冷加工变形有密切的关系,随着冷加工变形 In general, after high-frequency quenching deformation than after the overall quenching small, but in actual production, some parts, especially the high-frequency quenching rod parts tend to be more serious, Taishan -25 tractor shaft is the case . The workpiece (Figure 1) after the deformation of high-frequency quenching are generally beyond the technical requirements (0.1 mm), and even up to 1 mm above. Through analyzing the deformation data, it is found that the quenching deformation is closely related to the deformation of cold working. With the deformation of cold working