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

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...

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 content of metastable phase residual austenite It is difficult to ensure the stability of the matrix tissue

It can be seen that the traditional forming manufacturing process only uses the force field to realize the matrix forming, and regulates the matrix grain size, metastable structure and residual stress through the thermal field, resulting in very limited effects and difficult to greatly improve

In addition, the performance dispersion problem caused by the uneven force field and thermal field during the forming and manufacturing process of the matrix cannot be effectively solved.

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