Global patent index - EP 0877824 B1

EP 0877824 B1 2000-09-20 - READY-TO-USE METAL WIRE AND METHOD FOR PRODUCING SAME

Title (en)

READY-TO-USE METAL WIRE AND METHOD FOR PRODUCING SAME

Title (de)

GEBRAUCHTSFERTIGES METALLDRAHT UND VERFAHREN ZU DESSEN HERSTELLUNG

Title (fr)

FIL METALLIQUE PRET A L'EMPLOI ET PROCEDE POUR OBTENIR CE FIL

Publication

EP 0877824 B1 (FR)

Application

EP 97900245 A

Priority

  • FR 9700028 W
  • FR 9600406 A

Abstract (en)

[origin: WO9726379A1] A ready-to-use metal wire comprising microalloyed steel with a structure almost entirely made up of work-hardened annealed martensite is disclosed. The wire diameter is of at least 0.10 mm and at most 0.50 mm, and the ultimate tensile strength of the wire is of at least 2800 MPa. The method for producing said wire comprises shaping a drawing stock wire, performing a tempering heat treatment on the shaped wire and heating it to an annealing temperature to cause the formation of a structure almost entirely made up of annealed martensite. The wire is then cooled and shaped. Assemblies comprising at least one such wire, and wires or assemblies used in particular for reinforcing tyre casings, are also disclosed.

IPC 1-7 (main, further and additional classification)

C21D 8/06

IPC 8 full level (invention and additional information)

B21C 1/00 (2006.01); C21D 1/26 (2006.01); C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/12 (2006.01); C22C 38/18 (2006.01); C22C 38/24 (2006.01)

CPC (invention and additional information)

C21D 8/06 (2013.01); C21D 2211/008 (2013.01); Y10T 428/12354 (2013.01); Y10T 428/12375 (2013.01); Y10T 428/12431 (2013.01)

Designated contracting state (EPC)

BE DE ES FR GB IT

EPO simple patent family

WO 9726379 A1 19970724; AU 1383497 A 19970811; BR 9706987 A 19990720; CA 2243324 A1 19970724; CN 1079117 C 20020213; CN 1214085 A 19990414; DE 69703149 D1 20001026; DE 69703149 T2 20010517; EP 0877824 A1 19981118; EP 0877824 B1 20000920; ES 2150752 T3 20001201; FR 2743573 A1 19970718; JP 2000503724 A 20000328; RU 2177510 C2 20011227; US 6106637 A 20000822

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