Multi-energy-field collaborative forming manufacturing method for high-performance bearing base body

A manufacturing method and multi-energy field technology, applied in the field of bearing manufacturing, can solve problems such as difficulty in ensuring the stability of the matrix structure, coarse grain structure of the matrix, and weakening of the strength and toughness of the matrix, so as to strengthen the weak area of ​​structure performance and refine the grain size. Granular structure, the effect of reducing residual stress

Active Publication Date: 2021-01-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current traditional forming manufacturing process of the bearing matrix can no longer meet its high-performance service requirements. The traditional forming manufacturing process has the following defects: 1. Because it is usually formed by hot forging, the matrix grain structure is coarse and the streamline is missing, which seriously weakens the bearing matrix. 2. Because the martensite quenching and tempering process has been used all the time, the obtained single martensite strengthening phase leads to poor matrix strength and toughness ratio, and the higher co

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  • Multi-energy-field collaborative forming manufacturing method for high-performance bearing base body
  • Multi-energy-field collaborative forming manufacturing method for high-performance bearing base body
  • Multi-energy-field collaborative forming manufacturing method for high-performance bearing base body

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Example Embodiment

[0043] Example 1

[0044] Embodiment 1 of the present invention takes a certain type of bearing base made of GCr15 material as an example to provide a multi-energy field synergistic forming manufacturing method for a high-performance bearing base, which specifically includes the following steps:

[0045] S1. Cold-rolled ring-shaped pretreatment: the cold-rolled ring method is used to realize the forming of the bearing matrix (the cold-rolled ring method can adopt a cold-rolled forming method of an L-section automobile wheel hub bearing ring published in Chinese patent CN103316926A), and the average feed Under the rolling speed of 1mm / s, the outer diameter of the base ring blank is expanded from 35mm to 48.5mm, and the bearing ring blank is subjected to room temperature deformation pretreatment, and the accurate near-net shape of the raceway is achieved in the process;

[0046] S2. Electromagnetic coupling auxiliary treatment: synchronously apply electric pulse and magnetic pul...

Example Embodiment

[0053] Example 2

[0054] Embodiment 2 of the present invention takes a certain type of bearing base of M50 material as an example, and provides a multi-energy field synergistic forming manufacturing method for a high-performance bearing base, which specifically includes the following steps:

[0055] S1. Cold-rolled ring deformation pretreatment: The cold-rolled ring method is used to realize the forming of the bearing base. Under the rolling condition of the average feed rate of 0.5mm / s, the outer diameter of the base ring blank is rolled from 100mm to 123.7mm. The bearing ring blank is subjected to room temperature deformation pretreatment, and the accurate near-net shape of the raceway is achieved in the process;

[0056] S2. Electromagnetic coupling auxiliary treatment: Simultaneously apply electric pulses and magnetic pulses to the cold-rolled bearing base to regulate internal microscopic defects and residual stress, respectively. In the pulsed electric treatment process,...

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Abstract

The invention discloses a multi-energy-field collaborative forming manufacturing method for a high-performance bearing base body. The multi-energy-field collaborative forming manufacturing method comprises the following steps that S1, forming the bearing base body through a cold ring rolling process; S2, synchronously applying electric pulses and magnetic pulses to the bearing base body, and carrying out electromagnetic coupling auxiliary treatment; S3, carrying out complex phase structure regulation and control heat treatment on the bearing base body to obtain a martensite complex phase structure; and S4, synchronously applying electric pulses and magnetic pulses to the bearing base body, and carrying out electromagnetic coupling strengthening treatment. The multi-energy-field synergisticeffect of the force field, the electric field, the magnetic field and the thermal field is comprehensively utilized, the force field and the electromagnetic field are introduced on the basis of a traditional thermal field to carry out multi-scale regulation and control on the base body structure performance, and therefore the structure stability, the structure toughness and the performance consistency are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of bearing manufacturing, and in particular relates to a multi-energy field collaborative forming manufacturing method for a high-performance bearing matrix. Background technique [0002] High-end bearings, represented by high-speed machine tool main bearings and aero-engine bearings, often serve under extremely harsh working conditions and have extremely high requirements for life and reliability. . Bearings usually consist of inner and outer ring bases, rolling elements and cages. Among them, the annular matrix containing the raceway is the core component of the bearing, and its structural stability, structural toughness and performance consistency are the keys to determine the service life of the bearing. [0003] The forming manufacturing process of the bearing matrix directly determines its organizational state and service performance. Therefore, how to improve its comprehensive performance through th...

Claims

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Application Information

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IPC IPC(8): C21D10/00C21D1/04C21D1/46C21D1/20C21D1/22C21D6/04C21D8/00C21D9/40C21D11/00
CPCC21D1/04C21D1/20C21D1/22C21D1/46C21D6/04C21D8/005C21D9/40C21D10/00C21D11/00C21D2211/002C21D2211/008
Inventor 钱东升王丰华林路晓辉董昭华刘昱伶杨智皓王守豪左霄
Owner WUHAN UNIV OF TECH
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