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Method of manufacturing an annular seal

A technology of annular seals and manufacturing methods, which is applied to the sealing of engines, engine components, mechanical equipment, etc., and can solve the problems of increased complexity of manufacturing methods, etc.

Inactive Publication Date: 2017-09-26
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the complexity of the manufacturing method increases

Method used

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  • Method of manufacturing an annular seal
  • Method of manufacturing an annular seal
  • Method of manufacturing an annular seal

Examples

Experimental program
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Embodiment Construction

[0018] refer to figure 1 and image 3 , The first embodiment of the manufacturing method of the sealing member 500 according to the present invention includes the following steps: providing a first material 100 and bonding the second material 200 to the first material 100 to form an intermediate 10 . The second material 200 is a different material than the first material 100, and advantageously, the second material 200 can be selected to provide different material properties. The first material 100 and the second material 200 are arranged as annular layers such that the intermediate body 10 also has an annular shape.

[0019] The first material 100 may be an elastomeric material, such as is commonly used to manufacture seals. The elastomeric first material may include, for example: fluoroelastomer (FKM), perfluoroelastomer (FFKM), nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), carboxylated nitrile rubber (XNBR), silicone Rubber (VMQ), polyurethane (PU), neoprene ...

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Abstract

A method of manufacturing an annular seal (500), the method comprising the steps of: (i) providing an intermediate (10) having an annular layer of an elastomeric first material (100) bonded to an annular layer of a second material (200), the second material being different from the first material; and (ii) machining the intermediate to form the annular seal comprising the first and second materials, wherein: the intermediate (10) is machined to provide a profile that is generally U-shaped and is defined by a radially extending wall (1), an outer flange wall (2) extending axially from the radial wall (1), and an inner flange wall (3) facing the outer flange wall (2) and extending axially from the radial wall (1); and the annular seal (500) has a seal lip (4) that extends radially inward from the inner flange wall (3), whereby the seal lip (4) is formed from the second material (200) and the second material has one or more of: a lower coefficient of friction, a higher heat resistance, a higher wear resistance and / or a higher chemical resistance than the first material (100).

Description

technical field [0001] The invention relates to the field of annular seals for sealing annular gaps between relatively rotatable parts and their manufacture. Background technique [0002] Seals are used to prevent leakage between the two environments. For example, seals can be used to retain fluids, separate fluids, or prevent the transfer of particulate contamination from one environment to another. If the contact surfaces are perfectly smooth or if the contact asperity is severely distorted and sufficiently flat, a static seal will completely prevent leakage. [0003] Seals can also be used in non-static devices, such as rolling bearings. Non-static units rely on seals to retain lubricant, keep water out and prevent particle contamination of the easily damaged rolling elements, such as grit. Non-static devices also rely on an extremely thin elastohydrodynamic film between the seal and the moving surface to prevent excessive seal wear, especially at start-up where slow m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10F16J15/328
CPCF16J15/108F16J15/328
Inventor 罗伯托·戴格何罗斯蒂拉里奥·巴贝拉
Owner AB SKF