Process for manufacturing bearing ring

Abstract

The invention discloses a process for manufacturing a bearing ring, which belongs to the technical field of machining. The process comprises the following steps: manufacturing a bar stock, hot forging, annealing, turning, heat treating, grinding, assembling a finished product, and the like. A 3Crl3 material is used so as to meet the requirements on high hardness and wearing resistance of a product, and the convenience of machining the bar stock and the rust proof and anticorrosive performance of the finished product are simultaneously improved. Heat treatment is carried out for the bar stock in a continuous type bright quenching furnace under a vacuum condition, wherein the bar stock is firstly quenched at 1050-1080 DEG C and then is tempered at 600-680 DEG C; and after being tempered, the bar stock is cooled by water. The process greatly improves the hardness control capacity of the bar stock by controlling the quenching temperature, the deformation of the bar stock is improved to 0.0 5mm from 0.2 mm, a good foundation is provided for the machining the bearing ring in a subsequent working procedure, the stability of an interior tissue of the baring ring is guaranteed, the brittleness is reduced and the service life is prolonged.

Description

Technical field [0001] The invention relates to a manufacturing process of a bearing, in particular to a manufacturing process of a bearing ring. Background technique [0002] In the prior art, the widely used process flow for producing bearing rings is: forging-pickling-heating and rolling-cooling-cutting-forging-annealing-cutting-quenching-tempering- —Grinding—finished product inspection. The main disadvantage is that the process flow is too cumbersome, resulting in long processing time of the bearing ring and high manufacturing cost. Due to the selection of materials and the control of heat treatment process, the prepared finished product is in hardness and anti-corrosion performance. It is difficult to meet the requirements. Summary of the invention [0003] In order to solve the above-mentioned defects of the prior art, the purpose of the present invention is to provide a simple process flow and a process for preparing a bearing ring with higher hardness and anti-corrosion ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the widely used technological process for producing bearing rings is: forging—pickling—heat rolling—cooling—cutting—forging—annealing—cutting—quenching—tempering— - Grinding - Finished product inspection, the main disadvantage is that the process is too cumbersome, resulting in long processing time of the bearing ring, high manufacturing cost, and due to the selection of materials and the control of heat treatment process, the prepared finished product has poor hardness and corrosion resistance. Difficult to meet the requirements