Offshore wind power bearing heterogeneous material multi-field construction forming method

By combining vacuum or protective atmosphere sealing welding with hot rolling technology and the multi-field coupling effect of pulsed current, the defect problem of copper alloy layer in offshore wind turbine bearings was solved, realizing high-performance and low-cost heterogeneous material bonding, and improving the corrosion resistance and strength of the bearings.

CN120023597BActive Publication Date: 2026-07-24WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Filing Date
2025-04-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing technologies, copper alloy layers in offshore wind turbine bearings are prone to shrinkage porosity and poor microstructure, as well as poor interfacial bonding. Furthermore, laser cladding is costly, hindering the fabrication and shaping of high-performance, low-cost heterogeneous materials for wind turbine bearings.

Method used

Vacuum or protective atmosphere sealing welding combined with hot rolling technology is used to seal the inner and outer rings of offshore wind turbine bearings. Pulsed current is applied simultaneously, and the effects of multiple thermo-mechanical-electric fields are used to promote mechanical interlocking and atomic bonding of heterogeneous material interfaces, thereby achieving high-performance bonding of heterogeneous interfaces.

Benefits of technology

The obtained copper alloy layer on the bearing surface has good corrosion resistance and wear resistance, while the core alloy steel has good strength and impact toughness. The heterogeneous interface has strong bonding, which reduces manufacturing costs and improves the overall performance of the bearing.

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Abstract

The application discloses a kind of offshore wind power bearing heterogeneous material multi-field construction forming method, the contact surface of the inner ring and outer ring of offshore wind power bearing is sealed welding to obtain bearing ring blank, the bearing ring blank is hot-rolled, and bearing ring piece is prepared by synchronously applying pulse current during the hot-rolling, wherein the inner ring and outer ring are two different materials.The surface of the wind power bearing prepared by the application is copper alloy material, which has good corrosion resistance and abrasion resistance, the core is traditional alloy steel material, which has good strength and impact toughness, the heterogeneous interface also realizes mechanical combination and metallurgical combination, and finally obtains excellent comprehensive performance, which helps to realize the high-performance and low-cost manufacturing of wind power bearing heterogeneous material.
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