长轴杆形零件的淬火,通常都采用垂直入水的方法,也有介绍水平横向淬入水中的。据我厂的生产实践,这两种方法淬火后工件弯曲变形仍较大。自从无产阶级文化大革命初期我们就采用了横向滚动入水淬火法(见图),可减少变形。例如45钢冷拔料制双头螺栓坯料(φ21×265毫米)垂直淬火后不 Long axis rod-shaped parts of the quenching, usually using the method of vertical into the water, but also introduced horizontal horizontal quenching into the water. According to my factory’s production practice, the two methods after quenching the workpiece bending deformation is still large. Since the early days of the Great Proletarian Cultural Revolution, we have adopted a horizontal rolling water quenching method (see photo) to reduce distortion. For example, 45 steel cold-drawn material stud bolt blanks (φ21 × 265 mm) after vertical quenching not