EP 0859064 A1 19980819 - Stainless steel for manufacturing drawn wire, especially tyre reinforcement wire, and process of manutacturing said wire
Title (en)
Stainless steel for manufacturing drawn wire, especially tyre reinforcement wire, and process of manutacturing said wire
Title (de)
Rostfrei Stahl zum Herstellun von gezogenen Draht, insbesondere von Reifenverstärkungsdraht, und Herstellungsverfahren
Title (fr)
Acier inoxydable pour l'élaboration de fil tréfilé notamment de fil de renfort de pneumatique et procédé de realisation dudit fil
Publication
Application
Priority
FR 9701858 A 19970218
Abstract (en)
A method is claimed for the production of a drawn wire, notably a pneumatic reinforcing wire with a diameter of less than 0.3 mm, by drawing from a base machine wire with a diameter greater than 5 mm or from a previously drawn wire based on a stainless steel with a balanced composition conforming to given individual limits for its various components. The steel has set limits for its content of oxide inclusions and its composition conforms to given relationships between its components. The base wire is subjected to a wire drawing operation satisfying the following conditions:- a) a cumulative rate of deformation greater than 6; b) keeping the wire, during the wire drawing operation and between wire drawing operations, at a temperature of less than 650 degrees C, and preferably at a temperature of less than 600 degrees C, without reheating between the wire drawing passes. The stainless steel used in this method is also claimed.
Abstract (fr)
Procédé d'élaboration d'un fil tréfilé, notamment de fil de renfort de pneumatique de diamètre inférieur à 0,3 mm par tréfilage d'un fil-machine de base d'un diamètre supérieur à 5 mm ou d'un fil préalablement tréfilé de base d'un acier de composition pondérale suivante : carbone <= 40. 10<-3>%, azote <= 40. 10<-3>%, le carbone et azote satisfaisant la relation C + N <= 50 10<-3>% 0,2% <= silicium <= 1,0%, 0,2% <= manganèse <= 5%, 9% < nickel <=12%, 15% <= chrome <= 20%, 1,5% <= cuivre <= 4%, soufre <= 10.10<-3>%, phosphore < 0,050%, 40.10<-4>% <= oxygène total <= 120.10<-4>%, 0,1.10<-4>% <= aluminium <= 20.10<-4>%, magnésium <= 5.10<-4>%, 0,1.10<-4> % <= calcium <= 5.10<-4>%, titane <= 50.10<-4>%, des impuretés inhérentes à la fabrication, acier dans lequel les inclusions d'oxydes ont, sous forme de mélange vitreux, les proportions pondérales suivantes: 30% <= SiO2 <= 65%, 5% <= MnO <= 40%, 1% <= CaO <= 30%, 0% <= MgO <= 10%, 3% <= Al2O3 <= 25%, 0% <= Cr2O3 <=10%.
IPC 1-7
IPC 8 full level
D07B 1/06 (2006.01); B21C 1/00 (2006.01); C21D 8/06 (2006.01); C22C 38/00 (2006.01); C22C 38/42 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP US)
C21D 8/065 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); D07B 1/066 (2013.01 - EP US); D07B 2201/2009 (2013.01 - EP); D07B 2205/3028 (2013.01 - EP US); Y10S 428/923 (2013.01 - EP US); Y10T 428/12431 (2015.01 - EP US); Y10T 428/12438 (2015.01 - EP US); Y10T 428/12493 (2015.01 - EP US); Y10T 428/12771 (2015.01 - EP US); Y10T 428/12778 (2015.01 - EP US); Y10T 428/12861 (2015.01 - EP US); Y10T 428/12924 (2015.01 - EP US)
Citation (search report)
- [X] EP 0738783 A1 19961023 - UGINE SAVOIE SA [FR]
- [AD] EP 0648891 A1 19950419 - MICHELIN & CIE [FR]
- [A] EP 0567365 A1 19931027 - UGINE SAVOIE SA [FR]
- [A] FR 2333864 A1 19770701 - UNION CARBIDE CORP [US]
- [A] CHEMICAL ABSTRACTS, vol. 116, no. 4, 27 January 1992, Columbus, Ohio, US; abstract no. 25456, MURATA, WATARU ET AL: "Austenitic stainless steel of good drawability and cold workability" XP002045843 & JP H0361322 A 19910318 - NIPPON STEEL CORP
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0859064 A1 19980819; EP 0859064 B1 20030502; AT E239098 T1 20030515; AU 5302898 A 19980820; AU 734559 B2 20010614; BR 9800640 A 19990914; CA 2229693 A1 19980818; CA 2229693 C 20081230; CN 1080773 C 20020313; CN 1199782 A 19981125; DE 69813923 D1 20030605; DE 69813923 T2 20040226; ES 2198034 T3 20040116; FR 2759709 A1 19980821; FR 2759709 B1 19990319; ID 19904 A 19980820; JP H10226844 A 19980825; KR 19980071473 A 19981026; PT 859064 E 20030829; TW 409080 B 20001021; US 6440579 B1 20020827; ZA 981116 B 19980820
DOCDB simple family (application)
EP 98400241 A 19980205; AT 98400241 T 19980205; AU 5302898 A 19980210; BR 9800640 A 19980217; CA 2229693 A 19980213; CN 98106923 A 19980217; DE 69813923 T 19980205; ES 98400241 T 19980205; FR 9701858 A 19970218; ID 980221 A 19980218; JP 5272298 A 19980218; KR 19980004990 A 19980218; PT 98400241 T 19980205; TW 87101833 A 19980211; US 2547198 A 19980218; ZA 981116 A 19980211