Anti-corrosion layer system, anti-corrosion bearing component and method of protecting a bearing component from corrosion

A bearing assembly, layer system technology, applied in the direction of bearing components, bearings, shafts and bearings, etc., can solve the problems of re-contamination, high cost, damage to bearings, etc., to achieve reasonable cost, long-term reliable corrosion prevention effect

Active Publication Date: 2019-04-09
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, grit blasting of bearing components entails the risk that residual abrasive particles will damage the bearing during operation and / or that removal of abrasive particles from the bearing component as completely as possible involves very high costs
Coverage of even functional surfaces can lead to recontamination when the cover is removed as loose particles accumulate everywhere

Method used

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  • Anti-corrosion layer system, anti-corrosion bearing component and method of protecting a bearing component from corrosion

Examples

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Comparison scheme
Effect test

Embodiment Construction

[0037] figure 1 A schematic view of an exemplary embodiment of a coated bearing assembly 1 is shown. The figure is greatly simplified and not to scale, and only shows a section of the bearing assembly 1 . The bearing component 1 can be, for example, a bearing ring of a rolling element bearing or a plain bearing or the like. In particular, the bearing assembly 1 is formed as an assembly of a large bearing of a wind turbine or other large machine. The bearing assembly 1 can be made of steel, in particular rolling element bearing steel.

[0038] The base layer 3 is applied to the surface area 2 of the bearing component 1 . The surface region 2 can extend over the entire surface of the bearing component 1 with the exception of raceways and runners, which are not shown in the figures, or only over a partial region of the bearing component 1 . Base layer 3 comprises polyurethane, zinc and vinylphosphonic acid.

[0039] As an alternative to vinylphosphonic acid, the base layer 3...

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Abstract

The invention relates to a corrosion protection layer system comprising a base layer (3) comprising polyurethane, zinc and vinylphosphonic acid or silane. An intermediate layer (4) is formed on the base layer (3), and the intermediate layer (4) contains polyurethane and zinc. A top layer (5) is formed on the middle layer (4), and the top layer (5) contains polyurethane and micaceous iron oxide. A sealing layer (6) is formed on the top layer (5), and the sealing layer (6) contains polyurethane.

Description

technical field [0001] The invention relates to a corrosion-resistant layer system and a corrosion-resistant bearing component. Furthermore, the invention relates to a method for protecting a bearing assembly from corrosion. Background technique [0002] Bearings are sometimes exposed to corrosive environmental conditions. This is true for bearings which are installed eg in a wind turbine but are not installed eg in a weatherproof housing for construction reasons or for cost reasons. The situation is particularly problematic for wind turbines installed directly on the coast or even offshore. In this case, the bearings may come into contact with highly corrosive salt water or with salt spray. [0003] To prevent corrosion, the bearings can be provided with a coating. Epoxy-based lacquers are often used as anti-corrosion coatings. Alternatively, the coating can be produced by hot zinc spraying, ie zinc flame spraying or zinc plasma spraying. [0004] In order to ensure r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/10C09D5/08C08G18/30C08G18/76F16C33/20
CPCC08G18/307C08G18/76C09D5/08C09D5/106C09D175/04F16C33/201F16C33/206F16C2208/02F16C2208/12F16C2240/48F16C2240/60C08G2150/90C08K2003/2272C08K2003/2296C08K5/54C08K5/5317F16C33/208C08K3/11C08K2003/2268F16C33/203F16C2223/30F16C2360/31F16C2300/14C08K3/08C08K3/22C08K2003/0893
Inventor 西洛·冯·施雷尼茨
Owner AB SKF
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