Gear shaft forging process

Abstract

The invention provides a gear shaft forging process. The gear shaft forging process comprises the steps that S1, raw materials are smelted through an electric arc furnace or a converter, a refining furnace and a vacuum degassing furnace to form steel ingot die casting; S2, earlier stage treatment is carried out; S3, heat treatment is carried out on the steel ingot die casting subjected to earlier stage treatment, and the heat treatment mode is controlled cooling, spheroidizing annealing, annealing, normalizing and high-temperature tempering; S4, forging treatment is carried out on the steel ingot die casting; S5, the forge piece is cooled to 400-450 DEG C, and then annealing treatment is carried out; and S6, rough turning, ultrasonic flaw detection and mechanical property testing are carried out on the forge piece, and finally a finished product is put in storage. The problems that the mechanical performance of a blank is reduced and forging damage of the forge piece is increased due to improper heat treatment after the blank is formed can be solved, the qualified rate of a finished product is high, the service life is long, the technological process is simple, operation is convenient, machining uniformity is good, material loss is small, the obtained product is good in mechanical performance and stable in structure, the manufacturing cost is reduced, and the production efficiency and benefits are improved.

Description

technical field [0001] The invention relates to the technical field of gear shaft forging technology, in particular to a gear shaft forging technology. Background technique [0002] The gear shaft is a mechanical part that supports the rotating parts and rotates with them to transmit motion, torque or bending moment. It will inevitably involve forging and heat treatment in the production process. Generally, the heat treatment of the gear shaft is first arranged after the shaft blank is forged. Annealing treatment to eliminate forging internal stress, refine grains, improve cutting performance during machining, arrange quenching and tempering treatment after rough machining, and arrange partial quenching treatment on the teeth after half machining to make it meet the designed hardness requirements , to ensure the wear resistance of these surfaces, while the subsequent finishing process can eliminate quenching deformation. However, forging requires materials not only to have ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve some or some technical problems existing in the prior art, the present invention provides a gear shaft forging process, which can solve the problems of reduced mechanical properties and increased forging damage of forgings due to improper heat treatment after the blank is formed. , so that the qualified rate of the finished product is high, the service life is long, the technological process is simple, the operation is convenient, the processing uniformity is good, the material loss is small, the mechanical properties of the obtained product are good, the structure is stable, the manufacturing cost is reduced, and the production efficiency and profit are improved.