EP 1563104 B1 20080709 - METHOD FOR MAKING AN ABRASION RESISTANT STEEL PLATE AND PLATE OBTAINED
Title (en)
METHOD FOR MAKING AN ABRASION RESISTANT STEEL PLATE AND PLATE OBTAINED
Title (de)
VERFAHREN ZUM HERSTELLEN EINES ABRIEBFESTEN STAHLBLECHS UND SO HERGESTELLTES STAHLBLECH
Title (fr)
PROCEDE POUR FABRIQUER UNE TOLE EN ACIER RESISTANT A L'ABRASION ET TOLE OBTENUE
Publication
Application
Priority
- FR 0303359 W 20031113
- FR 0214424 A 20021119
Abstract (en)
[origin: FR2847270A1] The fabrication of a steel sheet resistant to abrasion consists of subjecting the sheet to a heat treatment in the hot forming operation or after austenite by reheating in a furnace. The hardening process involves: (a) cooling at a medium cooling rate of greater than 0.5 degrees C/s between a temperature greater than Ac3 and a given temperature between T and T-50; (b) then cooling at a core medium cooling rate Vr less than 1150 x ep power -1.7 and greater than 0.1 degrees C/s between the temperature T and 100 degrees C, ep being the thickness of the sheet in mm; and (c) cooling to ambient temperature and possibly performing a planishing operation. The temperature T is defined as being: T = 800 - 270 x C asterisk - 90 x Mn - 37 x Ni - 70 x Cr - 83 x (Mo +W/2). C asterisk = C-Ti/4 -Zr/8 + 7 x N/8.
IPC 8 full level
C21D 1/19 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/14 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01); C21D 9/46 (2006.01)
CPC (source: EP KR US)
C21D 1/19 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/50 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2847270 A1 20040521; FR 2847270 B1 20041224; AR 042071 A1 20050608; AT E400667 T1 20080715; AU 2003290188 A1 20040618; AU 2003290188 B2 20090108; BR 0315697 A 20050920; BR 0315697 B1 20130730; BR 122013002046 B1 20170425; BR 122013002046 B8 20171219; CA 2506351 A1 20040610; CA 2506351 C 20120424; CN 100350061 C 20071121; CN 1714160 A 20051228; DE 60322092 D1 20080821; EP 1563104 A1 20050817; EP 1563104 B1 20080709; ES 2309377 T3 20081216; JP 2006506528 A 20060223; JP 4535877 B2 20100901; KR 101010570 B1 20110125; KR 20050083913 A 20050826; PE 20040487 A1 20040818; PL 204080 B1 20091231; PL 375544 A1 20051128; RU 2005119208 A 20060210; RU 2327802 C2 20080627; SI 1563104 T1 20081231; UA 80308 C2 20070910; US 2006137780 A1 20060629; US 2008247903 A1 20081009; US 2008253920 A1 20081016; US 7459041 B2 20081202; US 8709336 B2 20140429; WO 2004048620 A1 20040610; ZA 200504005 B 20060726
DOCDB simple family (application)
FR 0214424 A 20021119; AR P030104257 A 20031118; AT 03782551 T 20031113; AU 2003290188 A 20031113; BR 0315697 A 20031113; BR 122013002046 A 20031113; CA 2506351 A 20031113; CN 200380103647 A 20031113; DE 60322092 T 20031113; EP 03782551 A 20031113; ES 03782551 T 20031113; FR 0303359 W 20031113; JP 2004554595 A 20031113; KR 20057009068 A 20031113; PE 2003001170 A 20031118; PL 37554403 A 20031113; RU 2005119208 A 20031113; SI 200331362 T 20031113; UA 2005005979 A 20031113; US 14043308 A 20080617; US 14043708 A 20080617; US 53541803 A 20031113; ZA 200504005 A 20050518