EP 1402965 A1 20040331 - METHOD FOR MANUFACTURING HEAT- TREATED DEFORMED STEEL
Title (en)
METHOD FOR MANUFACTURING HEAT- TREATED DEFORMED STEEL
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES WÄRMEBEHANDELTEN VERFORMTEN STAHLDRAHTES
Title (fr)
PROCEDE DE FABRICATION D'UN FIL D'ACIER DEFORME PAR TRAITEMENT THERMIQUE
Publication
Application
Priority
- JP 0106624 W 20010801
- JP 2001139429 A 20010510
Abstract (en)
Rolling/heating means (6), a four-way roll rolling machine (7) and a quenching/cooling means (8) are arranged close to each other in tandem. An untreated steel wire (W1) is quickly heated to a rolling temperature by the heating means (6) and is rolled into a deformed steel wire (W2) having a predetermined section by the four-way roll rolling machine (7). Just after this rolling, the steel wire (W2) is quenched by the quenching/cooling means (8) while applying tension by a pinch roll (9), thus form-hardening it. At this time, the pinch roll (9) is driven by a motor (9a) having a torque converter, so that the tension is hardly varied to give no size variation to the deformed steel wire. Downstream of the quenching/cooling means, there is also arranged in tandem a tempering/heating coil (10) to temper the steel wire continuously. Thus, there is manufactured at one step a heat-treated deformed steel wire quenched and heat-treated without any small curve.
IPC 1-7
IPC 8 full level
B21B 1/16 (2006.01); B21C 37/04 (2006.01); B21F 9/00 (2006.01); C21D 8/06 (2006.01); B21B 3/02 (2006.01); B21B 13/10 (2006.01); B21B 39/00 (2006.01); B21B 39/08 (2006.01); B21B 45/00 (2006.01); B21B 45/02 (2006.01); C21D 1/02 (2006.01)
CPC (source: EP KR US)
B21B 1/166 (2013.01 - EP US); B21C 37/045 (2013.01 - EP US); B21F 9/00 (2013.01 - EP US); C21D 8/06 (2013.01 - EP KR US); B21B 3/02 (2013.01 - EP US); B21B 13/103 (2013.01 - EP US); B21B 39/006 (2013.01 - EP US); B21B 39/08 (2013.01 - EP US); B21B 45/004 (2013.01 - EP US); B21B 45/0224 (2013.01 - EP US); B21B 2205/04 (2013.01 - EP US); C21D 1/02 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1402965 A1 20040331; EP 1402965 A4 20080820; EP 1402965 B1 20101201; DE 60143591 D1 20110113; KR 100662963 B1 20061228; KR 20030023601 A 20030319; TW I235768 B 20050711; US 2004060619 A1 20040401; WO 02092250 A1 20021121
DOCDB simple family (application)
EP 01954408 A 20010801; DE 60143591 T 20010801; JP 0106624 W 20010801; KR 20027006551 A 20010801; TW 90132627 A 20011227; US 11164603 A 20030227