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Method for machining high-precision steel ball

A processing method and high-precision technology, applied in the field of processing high-precision steel balls, can solve the problems of low-quality steel balls and achieve the effects of ensuring quality, increasing added value, and meeting quality requirements

Active Publication Date: 2015-01-07
WUHU YUHENG SPECIAL STEEL BALL
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of processing method of high precision steel ball, solve the problem that the quality of existing steel ball is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, a kind of processing method of high-precision steel ball, is characterized in that comprising:

[0016] (1) Cutting: Heat steel rods and wires at 1050°C for 2 hours, and after heating, quickly air-cool the rods and wires to 550°C at a cooling rate of ≥ 0.5°C / s and use automatic straightening. The steel bar wire is docked with the cold heading mill, and the steel bar and wire are cut, stamped and rolled into small rolling sections of approximate specifications in the cold heading mill;

[0017] (2) Quenching: Quench and heat the small rolled section in a quenching furnace. The quenching temperature is 780°C and held for 80 minutes, then cooled to 710°C and held for 120 minutes, and then air-cooled. The rolled section is tempered once and then cooled. To normal temperature, put it into the cold treatment equipment with a temperature of -30 ℃ for cooling for 180 minutes for cold treatment, and then perform a second tempering on the rolled section after the co...

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Abstract

The invention discloses a method for machining a high-precision steel ball. The method for machining the high-precision steel ball is characterized by comprising the steps of cropping, quenching, grinding, cleaning, accurate grinding, heat treatment, oil washing and detecting. Compared with the existing method, the method has the advantages that the whole quenching time and the whole heat treatment time are shortened by 50% at least; and the heat treatment efficiency is greatly improved. Compared with the existing steel ball of which the quenching time and the heat treatment time are long, the machined steel ball has the characteristics that the nodularity, the hardness and the strength property can be remarkably improved; and requirements on high quality of the steel balls in the industry of rolling bodies are met. By the method, the labor intensity is reduced, the labor investment and the production cost are reduced, the quality of products is ensured, and the additional value of products is improved.

Description

technical field [0001] The invention relates to a processing method, in particular to a processing method of high-precision steel balls. Background technique [0002] At present, with the intensification of international technology competition, the rolling element industry has developed rapidly, and high-efficiency and long-life steel balls have been favored by various industries at home and abroad. Through the cooperation, communication and technical research results with the world's top bearing industry, the current customers' focus on long-life small and medium-sized bearing steel balls is mainly in the aspects of high speed, high fit and no abnormal sound. From the operating mode, failure mechanism and quality indicators According to the analysis, high-speed precision bearing steel balls depend on high hardness uniformity, high contact fatigue strength and low dimensional change rate. [0003] However, the steel balls produced by the existing steel ball processing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/003
Inventor 潘小生胡金根叶卫军王礼勇
Owner WUHU YUHENG SPECIAL STEEL BALL
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