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Bearing component and method for increasing the resistance of a bearing component

A bearing component and coating technology, applied in the field of bearing components, can solve the problems of peeling, increased deformation, loss of matrix adhesion, etc., and achieve the effect of strong mechanical effect

Active Publication Date: 2021-01-26
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the layer is very thick, loss of adhesion to ground, unblasted substrates may result due to internal stresses and increased deformation of the layer under load
Layer systems formed in this way are no longer designed for extreme mechanical action when the layer thickness is high, with the result that spalling can result when very strong mechanical actions are applied to the layer system

Method used

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  • Bearing component and method for increasing the resistance of a bearing component

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Embodiment Construction

[0041] The bearing part 1 may be, for example, a bearing ring of a rolling bearing or a sliding bearing or the like. In particular, the bearing component 1 is configured as part of a large bearing of a wind turbine or other large machine. The bearing part 1 can be made of steel.

[0042] The surface region 2 of the bearing component 1 is coated successively with two layers of a base layer 3 , an intermediate layer 4 and a cover layer 5 from one-over-the-other. As a result, the bearing component 1 is protected against corrosion in the surface region 2 . The surface region 2 may extend over the entire surface of the bearing component 1 except for the raceways and slideways, or may extend only over partial regions of the bearing component 1 . As will be explained in more detail, instead of blasting the surface area 2 with abrasive particles prior to coating the bearing component 1, the lowermost base layer 3 is applied directly to the roughly ground and polished surface of the ...

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Abstract

Bearing component and method for increasing the resistance of a bearing component. The invention relates to a bearing component comprising a surface area (2) on which a base layer (3), an intermediate layer (4) and a cover layer (5) are coated sequentially from bottom to top, the The base layer (3) is a polyurethane-based first coating with added zinc, and the intermediate layer (4) is a second polyurethane-based coating with fiber additions different from the base layer (3) , the cover layer (5) is a third coating based on polyurethane different from the middle layer (4).

Description

technical field [0001] The invention relates to a bearing component and a method for increasing the resistance of a bearing component, in particular mechanical resistance and protection of non-blasted surfaces from spalling. Background technique [0002] Bearings are sometimes exposed to corrosive environmental conditions. This is true, for example, for bearings which are installed in wind turbines and which for construction or cost reasons are not installed eg in a housing which protects the bearing from the weather. This is problematic especially in the case of wind turbines built directly on the coast or even directly in the sea. In this case, the bearings may come into contact with highly corrosive salt water. [0003] The bearing can be provided with a coating for protecting it from corrosion. Epoxy-based coatings are often used as anti-corrosion coatings. In order to ensure reliable corrosion protection, the coating must be firmly attached to the substrate. For th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/12F16C33/14F16C33/04F16C33/62F16C33/64B05D7/00B05D7/14
CPCB05D7/14B05D7/584B05D2301/00B05D2320/00B05D2503/00F16C33/04F16C33/124F16C33/14F16C33/62F16C33/64F16C2208/02F16C2208/12F16C2300/42F16C2360/31B05D2420/01B05D2420/02B05D2420/03C09D5/08F16C33/12
Inventor 蒂洛·冯·施莱尼茨
Owner AB SKF
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