EP 1089838 A1 20010411 - METHOD FOR PRODUCING VEHICLE WHEELS
Title (en)
METHOD FOR PRODUCING VEHICLE WHEELS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FAHRZEUGRÄDERN
Title (fr)
PROCEDE DE PRODUCTION DE ROUES DE VEHICULES
Publication
Application
Priority
- RU 98111967 A 19980624
- US 9914457 W 19990624
Abstract (en)
[origin: WO9967042A1] A metal forming method is used for manufacturing vehicle wheels. The invention comprises manufacturing of a wheel block comprising a central part and initially formed rim; drawing of the rim by hot rolling to obtain a wheel profile that approximates a finished wheel, and a final wheel treatment process. The rolling is conducted from either side of the wheel block, which may comprise any granular microstructure. Rolling temperature-strain rate conditions correspond to the microstructure. For a coarse-grain microstructure, the rim includes a shoulder with a thickness greater than that of the finished wheel, and thickness differences transform the microstructure into a recrystallized and/or polygonized microstructure. For a fine-grain microstructure, the rim includes a shoulder or flange with a thickness close to a thickness of a finished wheel. For mixed microstructures, the rim includes a shoulder and has a thickness greater or equal to a finished wheel.
IPC 1-7
IPC 8 full level
B21D 22/16 (2006.01); B21D 53/26 (2006.01); B21D 53/30 (2006.01); B21H 1/02 (2006.01); B21H 1/04 (2006.01); B21H 1/10 (2006.01); B21K 1/38 (2006.01); B23P 15/00 (2006.01); C21D 9/34 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01); C22F 1/18 (2006.01)
CPC (source: EP KR)
B21D 22/16 (2013.01 - EP); B21D 53/26 (2013.01 - KR); B21D 53/264 (2013.01 - EP); B21H 1/10 (2013.01 - EP); B23P 15/00 (2013.01 - EP); C22F 1/00 (2013.01 - EP); C22F 1/04 (2013.01 - EP); C22F 1/183 (2013.01 - EP)
Citation (search report)
See references of WO 9967042A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9967042 A1 19991229; CN 1313798 A 20010919; CZ 20004861 A3 20020213; EP 1089838 A1 20010411; JP 2002518186 A 20020625; KR 20010078742 A 20010821; RU 2153946 C2 20000810
DOCDB simple family (application)
US 9914457 W 19990624; CN 99809818 A 19990624; CZ 20004861 A 19990624; EP 99930744 A 19990624; JP 2000555715 A 19990624; KR 20007014609 A 20001222; RU 98111967 A 19980624