Title:
METHOD FOR PRODUCING STEEL ROLLING BEARING RINGS
Document Type and Number:
WIPO Patent Application WO1999007495
Kind Code:
A3
Abstract:
The invention relates to a method for producing steel rolling bearing rings starting from a hot-rolled tube with a structure which is similar to the structure of spheroidite, and rings of the same continuous length which are hot-separated with the addition of a lubricant and re-machined after cooling. Hot separation occurs at a temperature which is above or below the transformation temperature of the steel used, followed by cooling. A green or soft ring pertaining to the rolling bearing ring with narrow tolerance shaped elements is produced from the raw ring by means of further cold machining.
Inventors:
TENBRACK KARL (DE)
FOERSTER WILFRIED (DE)
STEPHAN ROLAND (DE)
SOMMERFELD HERBERT (DE)
FOERSTER WILFRIED (DE)
STEPHAN ROLAND (DE)
SOMMERFELD HERBERT (DE)
Application Number:
PCT/DE1998/001899
Publication Date:
May 27, 1999
Filing Date:
July 01, 1998
Export Citation:
Assignee:
MANNESMANN AG (DE)
TENBRACK KARL (DE)
FOERSTER WILFRIED (DE)
STEPHAN ROLAND (DE)
SOMMERFELD HERBERT (DE)
TENBRACK KARL (DE)
FOERSTER WILFRIED (DE)
STEPHAN ROLAND (DE)
SOMMERFELD HERBERT (DE)
International Classes:
B21D53/00; B23P13/04; B23P13/00; B23P15/00; C21D9/40; F16C33/64; (IPC1-7): B23P13/04; B23P15/00
Domestic Patent References:
WO1995029777A1 | 1995-11-09 | |||
WO1995034387A1 | 1995-12-21 |
Foreign References:
DE19541135C1 | 1997-04-30 | |||
GB1361553A | 1974-07-24 | |||
DE19513314A1 | 1996-10-10 | |||
DE3535811A1 | 1986-06-05 | |||
US3769671A | 1973-11-06 | |||
DE19520833A1 | 1995-12-21 | |||
DE3804654A1 | 1989-08-24 | |||
DE19526900A1 | 1997-01-23 |
Download PDF:
Previous Patent: THREADED COUPLING ADAPTOR FOR GARDEN HOSES
Next Patent: FLAT THREAD ROLLING DIE FOR POINTED SCREWS
Next Patent: FLAT THREAD ROLLING DIE FOR POINTED SCREWS