Once grinding technology of steel ball for high-grade car transmission shaft

Abstract

The invention discloses a once grinding technology of a steel ball for a high-grade car transmission shaft, which includes cold heading process, smooth grinding process, heat treatment process, hard grinding process, reinforcement process, secondary hard grinding process and fine grinding process, and is characterized in that two fine grinding processes after the secondary hard grinding process are combined into one fine grinding process. The fine grinding process includes steps of adjusting the present once grinding technology to standard of G10 grade ball, carrying out circulation liquid water grinding on a grinder, and increasing grinding amount to the steel ball to 30MM-35MM. Stage of steel ball produced by employing the technology reach to G28, so that the steel ball is suitable for high-grade car transmission shaft, and the two processes are modified to one process by the processing technology, thereby increasing production efficiency.

Description

technical field [0001] The invention relates to a primary grinding process of steel balls for high-grade car drive shafts, in particular to the primary grinding process of steel balls for car drive shafts made of WS52100 vacuum deoxidized and refined bearing steel material. Background technique [0002] At present, the domestic and foreign car transmission shaft steel ball market has broad prospects. The transmission shaft is the key basic part of high-end cars, and the steel ball is the main part of the transmission shaft. The quality of the ball is very important to the performance of the transmission shaft. The quality control of steel balls lies in the process, the most important thing is the grinding process. The traditional grinding process mainly relies on the grasp of the primary grinding agent for steel balls to achieve grinding. Generally, two steps are required. In addition to low efficiency, the requirements for grasping the primary grinding agent of steel balls ...

AI Technical Summary

Problems solved by technology

The traditional grinding process mainly relies on the grasp of the primary grinding agent for steel balls to achieve grinding. Generally, two steps are required. In addition to low efficiency, the requirements for grasping the primary grinding agent of steel balls are also very high.

The following are the disadvantages of the two grindings summarized: 1. When the external temperature changes, the viscosity stability is poor, and it is difficult to clean the equipment environment; 2. When the roughness is too large, the oil film is too thick; when the oil film thickness exceeds the abrasive particle size, The abrasive will lose its grinding ability. When the viscosity of the lubricating oil is too low, not only the abrasive is easily thrown off from the steel ball and the grinding disc, which reduces the grinding efficiency, but also it is difficult to control the uniformity of the ball, resulting in grinding burns production

This shortcoming leads to the fact that the steel balls produced cannot be used for the drive shafts of high-end cars.