Grinding machine spindle inlaid steel hot sleeve repair
In practice, we have explored the method of repairing the spindle of the grinding machine with hot-rolled steel. It is introduced as follows: (1) The main shaft is made of nitrided material of 38CrMoAlA, and the hardness of the surface layer is 900HV, so the nitrogen in the middle of the main shaft must be blocked first. The layer is ground to a small 0.7 to 0.8 mm for turning. (2) As shown in Fig. 1, the three sections of the main shaft bearing block are respectively used for small cutting amount, and are ground to a size of φ85±0.02mm, φ84±0.02mm and φ85_(-0.20)~(-0.15)mm after turning.