Invention Grant
- Patent Title: Method for the production of a bearing ring for large-size rolling bearings
- Patent Title (中): 用于生产大型滚动轴承的轴承圈的方法
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Application No.: US11816218Application Date: 2006-02-11
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Publication No.: US08091239B2Publication Date: 2012-01-10
- Inventor: Joerg Rollmann , Wilfried Spintig , Bernd Stakemeier , Kristian Berggren
- Applicant: Joerg Rollmann , Wilfried Spintig , Bernd Stakemeier , Kristian Berggren
- Applicant Address: DE Dortmund DE Freiburg
- Assignee: Rothe Erde GmbH,EFD Induction GmbH
- Current Assignee: Rothe Erde GmbH,EFD Induction GmbH
- Current Assignee Address: DE Dortmund DE Freiburg
- Agency: McGlew and Tuttle, P.C.
- Priority: DE102005006701 20050215
- International Application: PCT/EP2006/001266 WO 20060211
- International Announcement: WO2006/087152 WO 20060824
- Main IPC: B21D53/00
- IPC: B21D53/00 ; B23P17/00 ; C21D9/40

Abstract:
A method is provided for producing a bearing ring (1) for large-size rolling bearings including at least one track (3) that is provided with a hardened peripheral layer. With the method the peripheral layer that is to be hardened is exposed to the electric field of an inductor in order to be heated and is then quenched. At least two inductors (2) are disposed above a common zone (a) of the annular track (3) that is to be hardened at the beginning of the hardening process. These inductors (2) heat the opposite peripheral layer to a hardening temperature at this location. The inductors (2) are moved in the opposite direction along the annular track in order to heat the adjacent central zones (b). Sprinklers (5) that are directed onto the heated peripheral layers are turned on following a short distance, and the peripheral layers are quenched starting from the center of the zone (a) that was heated at the beginning. The inductors (2) and the sprinklers (5) continue to be moved on the halves of the rings thereof until coinciding again in a zone (c) located opposite the point of departure and once again forming a joint heating zone there. Both inductors (2) are lifted perpendicular to the surface of the track (3) upon reaching the required hardening temperature. The sprinklers (5) are directed onto zone (c).
Public/Granted literature
- US20080141535A1 Method For The Production Of A Bearing Ring For Large-Size Rolling Bearings Public/Granted day:2008-06-19
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