METHOD OF MANUFACTURING A BEARING COMPONENT

World Intellectual Property Organization Patent

APP PUB NO WO-2011076229-A1
SERIAL NO

PCTEP2009009209

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Abstract

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The present invention relates to a method of manufacturing a bearing component, in which a visible identification mark is created on a surface of the component using a laser beam. The laser marking creates an oxidised layer on the component surface and, in an underlying region, alters the microstructure of the bearing steel from which the component is made. According to the invention, the mark is then rendered visually undetectable with the naked eye, by removing at least the oxidised surface layer of the mark. This exposes the altered microstructure, which is revealable by applying an etchant to the visually undetectable mark.

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Patent Owner(s)

Patent OwnerAddress
SKF ABSEGOTHENBURG

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Inventor(s)

Inventor Name Address
MOL HENDRIK ANNE 4254 XG SLEEUWIJK
VAN DE SANDEN JOHN NL-3435 DT NIEUWEGEIN
KROCK HENDRIK JOHANNES NL-4254 EL SLEEUWIJK

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