Processing process steps of deep groove ball bearing:
1.tube blank processing: the bearing steel is heated to 1150℃ ~ 1200℃ in the heating furnace, and the perforator is used to perforate the heated tube blank to make capillary tube;
2.spheroidizing annealing: the tubular spheroidizing annealing, the hardness range of the annealed tubular is HRB88 ~ 94;
3.Hot rolling of tube billet: send the annealed tube into the heating furnace for secondary soaking heat; The waste pipe is formed by diameter reduction, wall reduction and extension rolling of the tube after secondary heat soaking.
4.tube blank shaping and cutting: the waste pipe through the sizing unit, sizing and shaping, and then straightening and cutting, forming a suite;
5.recrystallization annealing: the kit will be recrystallization annealing treatment, eliminate work hardening, so as to facilitate the implementation of cold rolling;
6.Soft grinding kit: The double end face of the kit is first softened, then the outer circle of the kit is softened, the double end face is first grinded, then the outer circle is grinded. The outer circle is a through grinding, and the material is processed together through the end face to ensure that the outer diameter of the part is always on the same plane with the support plate, the outer diameter taper is ensured within the control range, the Angle relation between the two grinding wheels in the double end grinding process is adjusted, and the parallel difference of the end face is controlled. The precision of the end face is used as the datum of the post-process processing; The outer circle is processed by centerless grinding.
7. Kit fine hole: drill the stop bolt hole and oil hole on the kit surface and rough the inner hole surface of the kit to prepare for cold rolling inner hole surface;
8..Cold rolling kit: For cold rolling of deep groove ball bearing ring groove, the feed speed of the core roller in the process of cold rolling has six stages, the speed range is 0.4mm/s ~ 1.0mm/s, and the track of the speed curve in a processing cycle is fast, slow, slow, until stop; The rolling time was between 6s and 14s, and the rolling pressure was 80KN;
9.Turning kit: chamfer the kit and seal the groove;
10.fine grinding kit: fine grinding kit, improve the surface accuracy of the kit;
11. installation of bearings: between the ring into the ball, install the cage, grease, install seals, complete the assembly of deep groove ball bearings.
