EP 0925380 B1 20010523 - METHOD FOR MANUFACTURING SELF-HARDENING STEEL WIRE, REINFORCING WIRE AND APPLICATION TO A FLEXIBLE DUCT
Title (en)
METHOD FOR MANUFACTURING SELF-HARDENING STEEL WIRE, REINFORCING WIRE AND APPLICATION TO A FLEXIBLE DUCT
Title (de)
VERFAHREN ZUR HERSTELLUNG VON DRÄHTEN AUS SELBSTAUSHÄRTENDEM STAHL, VON PROFILDRÄHTEN UND VERWENDUNG FÜR BIEGSAME RÖHRLEITUNGEN
Title (fr)
PROCEDE DE FABRICATION DE FILS EN ACIER AUTO-TREMPANT, FILS DE FORME ET APPLICATION A UNE CONDUITE FLEXIBLE
Publication
Application
Priority
- FR 9701578 W 19970908
- FR 9610976 A 19960909
Abstract (en)
[origin: FR2753206A1] The invention concerns a method for manufacturing steel wire comprising the following steps: manufacturing a reinforcing wire of sizeable length by rolling or hot wire drawing from steel containing the following elements: 0.18 % to 0.45 % of C, 0.4 % to 1.8 % of Mn, 1 to 4 % of Cr, 0.1 % to 0.6 % of Si, 0 to 1.5 % of Mo, 0 to 1.5 % of Ni, at most 0.01 % of S and 0.02 % of P, the reinforcing wire having after being rolled or hot drawn a temperature at least higher than the AC3 temperature, preferably between 50 and 200 DEG C and in particular 100 and 150 DEG C; winding the wire in reels before air cooling the raw manufacturing wire to obtain a HRC hardness not less than 40 and preferably higher than 45. In a variant, the method consists in quenching and tempering so that the wire has a hardness between 20 HRC and 35 HRC. The invention also concerns a reinforcing wire and a flexible tube for carrying effluent.
IPC 1-7
IPC 8 full level
B21C 37/04 (2006.01); C21D 8/06 (2006.01); C22C 38/00 (2006.01); C22C 38/22 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP US)
B21C 37/045 (2013.01 - EP US); C21D 8/06 (2013.01 - EP US); C21D 8/065 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); Y10T 428/12 (2015.01 - EP US); Y10T 428/12431 (2015.01 - EP US); Y10T 428/12972 (2015.01 - EP US)
Designated contracting state (EPC)
DK FR GB NL
DOCDB simple family (publication)
FR 2753206 A1 19980313; FR 2753206 B1 19981106; AU 4211897 A 19980326; AU 734607 B2 20010621; BR 9711717 A 19990824; CA 2265573 A1 19980312; DK 0925380 T3 20010806; EP 0925380 A1 19990630; EP 0925380 B1 20010523; JP 2000517381 A 20001226; NO 991119 D0 19990308; NO 991119 L 19990507; US 6291079 B1 20010918; WO 9810113 A1 19980312
DOCDB simple family (application)
FR 9610976 A 19960909; AU 4211897 A 19970908; BR 9711717 A 19970908; CA 2265573 A 19970908; DK 97940193 T 19970908; EP 97940193 A 19970908; FR 9701578 W 19970908; JP 51231998 A 19970908; NO 991119 A 19990308; US 25448699 A 19990510