Patent · US Active

Method for producing a rolling bearing ring having an improved robustness against the formation of white etching cracks (WEC)

US11624403B2 · kind B2 · utility

0Cited by

0References

7Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Lothar Hofmann · Burgkunstadt, DE
Andreas Mangold · Mellrichstadt, DE
Toni Blass · Bergrheinfeld, DE
Wolfram Kruhoeffer · Dörflas, DE
Werner Trojahn · Niederwerrn, DE

Key dates

Filing date	Nov 7, 2017
Grant date	Apr 11, 2023
Priority date	—
Expiry date	Jun 4, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method for producing a rolling bearing ring featuring an improved robustness against the formation of white etching cracks (WEC), wherein the rolling bearing component, which is made of a hypo-eutectoid heat-treated steel containing C in an amount of 0.4-0.55% and Cr in an amount of 0.5-2.0% in order to form a hardened boundary layer, is inductively heated, then quenched and subsequently tempered.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.