Forging forming method for inner ring and outer ring of motor train unit bearing with reasonable streamline distribution

A technology of inner and outer rings and EMUs, applied in heat treatment furnaces, manufacturing tools, heat treatment equipment, etc., can solve the problems of affecting the mechanical properties of forgings, the disorder of metal streamlines, and the lack of effective technology to ensure the distribution of forging streamlines, etc., to improve mechanical properties performance effect

Active Publication Date: 2018-08-31
LUOYANG LYC BEARING
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Problems solved by technology

On the contrary, if there are defects in the flow line, such as turbulent flow, through flow, metal flow line disorder, etc., it will affec

Method used

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  • Forging forming method for inner ring and outer ring of motor train unit bearing with reasonable streamline distribution
  • Forging forming method for inner ring and outer ring of motor train unit bearing with reasonable streamline distribution
  • Forging forming method for inner ring and outer ring of motor train unit bearing with reasonable streamline distribution

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Embodiment Construction

[0019] The following combination Figure 1 ~ Figure 3 And specific embodiments, the present invention is described further. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

[0020] The concrete steps that the present invention implements are as follows:

[0021] 1) Deform simulation using process simulation system: simulate the entire processing process on the computer, analyze various forming processes and heat treatment processes in metal forming and related industries, and then simulate and optimize punches and adjust the fit gap between molds;

[0022] 2) Simulation and display of streamline distribution: Use carburized steel with low purity to replace the newly developed DZC1 carburized bearing steel with high purity to manufacture forgings with the same structure and size. Carry out wire cutting processing in the height direction of the ferrule, and after grinding...

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Abstract

The invention relates to a forging forming method for an inner ring and an outer ring of a motor train unit bearing with reasonable streamline distribution. According to the forging forming method, the structure size of a die used in a forging forming process is optimized and designed by using deform software, the metal streamline distribution is simulated, and the more reasonable die structure size and matching clearance are obtained; carburized steel with low purity is subjected to streamline distribution simulation manufacturing instead of novel carburized steel which has high purity and streamline distribution difficult to observe, the reasonably distributed metal streamline is obtained, the mechanical property of a product is improved, and the contact fatigue life of the product is prolonged. By the adoption of the method for the development, the quality of an actual product formed by forging and forming during mass production of the inner ring and the outer ring of the motor train unit bearing is ensured, and mass production of ferrule forgings for motor train unit bearings is realized.

Description

technical field [0001] The invention relates to a forging forming method for an inner and outer ring of a bearing, and mainly relates to a forging and forming method for an inner and outer ring of an EMU bearing with reasonable streamline distribution. Background technique [0002] High-speed EMU axle box bearings have the characteristics of high speed, large load, strong impact, long life and high reliability, and are extremely difficult to manufacture. In the past, domestic high-speed rail special bearings were purchased at high prices from Japan's NTN, Sweden's SKF and Germany's FAG products, and the localization of high-speed rail bearings has become an imminent matter. According to the "compact double-row tapered roller bearing assembly" proposed by China Railway Corporation as the design scheme of the standard high-speed train axle box bearings, our company has carried out process research on the high-speed train axle box bearings with a speed of 250 kilometers per hou...

Claims

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Application Information

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IPC IPC(8): B21K1/05B21H1/06C21D9/40C21D1/32C21D1/74C21D1/84
CPCB21H1/06B21K1/05C21D1/32C21D1/74C21D1/84C21D9/40
Inventor 庞碧涛王玉杰张玲裴华董汉杰黄喆罗强王战冶刘赛陈学武徐保中刘振威曹伟陈文君樊晨辉黄萌阳尹兵
Owner LUOYANG LYC BEARING
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