Method for manufacturing a ceramic bearing component

A method for manufacturing ceramic bearing components that includes a post-grinding heat treatment and optical inspection to repair defects, improving quality and reducing scrap rates by healing cracks and enhancing mechanical strength.

DE102024137296A1Pending Publication Date: 2026-06-18AB SKF SKF PATENT DEPARTMENT
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Patent Information

Application Number
DE102024137296
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Ceramic bearing components often develop defects such as cracks during machining and handling, leading to material fatigue and reduced mechanical strength, and existing inspection methods are costly, intricate, and time-consuming, with high scrap rates due to false positives.

Method used

Incorporating a heat treatment step after grinding and optional fine grinding or lapping, followed by optical inspection using white and UV light, to repair or reduce defects, and using heat-induced or light-induced curing agents to seal and heal defects.

Benefits of technology

Improves the quality of ceramic bearing components by reducing defects and scrap rates, enhancing mechanical strength, and achieving high surface quality with minimal defects.

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Abstract

A method for manufacturing a ceramic bearing component (1) for a bearing, in particular a rolling bearing, is disclosed, comprising the steps: a. Providing (S1) a ceramic semi-finished product (1a) and grinding the semi-finished product (1a) or providing (S1) a finished ground ceramic bearing component (1b), b. Heat treatment (S3) of the ground semi-finished product (1a) or the finished ground bearing component (1b) to produce the bearing component (1), and c. optical inspection (S4) of the bearing component (1).
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