Global Patent Index - EP 2548664 A4

EP 2548664 A4 20170531 - PROCESS FOR PRODUCING HOT-ROLLED STEEL SHEET AND PROCESS FOR PRODUCING HOT-DIP GALVANIZED STEEL SHEET

Title (en)

PROCESS FOR PRODUCING HOT-ROLLED STEEL SHEET AND PROCESS FOR PRODUCING HOT-DIP GALVANIZED STEEL SHEET

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES HEISSGEWALZTEN STAHLBLECHS SOWIE VERFAHREN ZUR HERSTELLUNG EINES FEUERVERZINKTEN STAHLBLECHS

Title (fr)

PROCÉDÉ DE PRODUCTION D'UNE TÔLE D'ACIER LAMINÉ À CHAUD ET PROCÉDÉ DE PRODUCTION D'UNE TÔLE D'ACIER GALVANISÉ À CHAUD

Publication

EP 2548664 A4 20170531 (EN)

Application

EP 11768981 A 20110414

Priority

  • JP 2010094621 A 20100416
  • JP 2011059768 W 20110414

Abstract (en)

[origin: EP2548664A1] A method for producing a hot rolled steel sheet includes a slab heating step of heating a steel slab in a slab heating furnace, a step of hot-rolling the heated steel slab in a rough rolling mill to form a strip and a finish rolling mill, and a coiling step of coiling the strip around a coiler. The atmosphere in steps from the slab heating step to the coiling step is a non-oxidizing atmosphere. The slab steel contains C: 0.01-0.15%, Si: 0.1-1.8%, Mn: 1.0-2.7%, Al: 0.01-1.5%, P: 0.005-0.025%, and S: 0.01% or less, by mass. A hot-dip galvanized steel sheet is produced by pickling the hot rolled steel sheet to remove mill scale, or by pickling the sheet and further cold-rolling the sheet, and subsequently by subjecting the resultant to hot-dip galvanizing.

IPC 8 full level

B21B 9/00 (2006.01); B21B 1/26 (2006.01); B21B 3/00 (2006.01); C21D 1/70 (2006.01); C21D 1/76 (2006.01); C21D 9/00 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/58 (2006.01); C23C 2/06 (2006.01); C23C 2/28 (2006.01)

CPC (source: EP KR US)

B21B 3/00 (2013.01 - KR); B21B 9/00 (2013.01 - EP KR US); B21B 45/004 (2013.01 - KR); B21D 11/06 (2013.01 - KR US); C21D 1/76 (2013.01 - EP KR US); C21D 6/008 (2013.01 - EP KR US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0473 (2013.01 - KR); C21D 9/48 (2013.01 - KR); C21D 9/561 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C23C 2/0038 (2022.08 - EP US); C23C 2/02 (2013.01 - EP KR US); C23C 2/022 (2022.08 - EP KR US); C23C 2/024 (2022.08 - EP KR US); C23C 2/06 (2013.01 - EP KR US); C23C 2/28 (2013.01 - EP KR US); B21B 3/00 (2013.01 - EP US); B21B 45/004 (2013.01 - EP US); C21D 8/0473 (2013.01 - EP US); C21D 9/48 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2548664 A1 20130123; EP 2548664 A4 20170531; BR 112012026457 A2 20160809; CA 2794658 A1 20111020; CA 2794658 C 20150630; CN 102844126 A 20121226; CN 102844126 B 20160511; JP 2011224584 A 20111110; KR 20130018846 A 20130225; KR 20150013954 A 20150205; MX 2012011761 A 20121116; TW 201139690 A 20111116; TW I458832 B 20141101; US 2013202801 A1 20130808; WO 2011129465 A1 20111020

DOCDB simple family (application)

EP 11768981 A 20110414; BR 112012026457 A 20110414; CA 2794658 A 20110414; CN 201180018720 A 20110414; JP 2010094621 A 20100416; JP 2011059768 W 20110414; KR 20127028948 A 20110414; KR 20157001527 A 20110414; MX 2012011761 A 20110414; TW 100112651 A 20110412; US 201113641267 A 20110414