Global Patent Index - EP 2130931 B1

EP 2130931 B1 20190918 - METHOD FOR PRODUCING ALUMINUM ALLOY THICK PLATE

Title (en)

METHOD FOR PRODUCING ALUMINUM ALLOY THICK PLATE

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER DICKEN PLATTE AUS EINER ALUMINIUMLEGIERUNG

Title (fr)

PROCÉDÉ DE FABRICATION D'UNE PLAQUE ÉPAISSE D'ALLIAGE D'ALUMINIUM

Publication

EP 2130931 B1 20190918 (EN)

Application

EP 08722912 A 20080327

Priority

  • JP 2008055873 W 20080327
  • JP 2007095419 A 20070330
  • JP 2007095423 A 20070330
  • JP 2007098495 A 20070404

Abstract (en)

[origin: EP2130931A1] Disclosed is a method for manufacturing an aluminum alloy thick plate. The method includes, in the following order, a melting step (S1) for melting an aluminum alloy, the aluminum alloy containing a predetermined amount of Mg and further containing at least one of Si, Fe, Cu, Mn, Cr, Zn, Ti, and Zr, with the remainder being aluminum and inevitable impurities; a hydrogen gas removal step (S2) for removing hydrogen gas from the molten aluminum alloy; a filtration step (S3) for removing inclusions from the aluminum alloy from which hydrogen gas have been removed; a casting step (S4) for casting the aluminum alloy, from which inclusions have been removed, into a slab; a slicing step (S5) for slicing the slab into an aluminum alloy thick plate having a predetermined thickness; and a heat treatment step (S6) for subjecting the aluminum alloy thick plate having a predetermined thickness to a heat treatment by holding the same at a temperature of 400°C or higher but lower than its melting point for one hour or longer.

IPC 8 full level

B22D 21/00 (2006.01); B22D 1/00 (2006.01); B22D 21/04 (2006.01); B22D 43/00 (2006.01); C22B 9/02 (2006.01); C22B 9/05 (2006.01); C22B 21/06 (2006.01); C22C 1/02 (2006.01); C22C 21/00 (2006.01); C22C 21/02 (2006.01); C22C 21/06 (2006.01); C22C 21/10 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01); C22F 1/047 (2006.01); C22F 1/05 (2006.01); C22F 1/053 (2006.01)

CPC (source: EP KR)

B22D 1/00 (2013.01 - EP KR); B22D 21/007 (2013.01 - EP); B22D 43/004 (2013.01 - EP); C22B 9/02 (2013.01 - KR); C22B 21/06 (2013.01 - EP KR); C22B 21/066 (2013.01 - EP); C22C 1/02 (2013.01 - EP); C22C 21/02 (2013.01 - EP); C22C 21/06 (2013.01 - EP); C22F 1/04 (2013.01 - EP KR); C22F 1/047 (2013.01 - EP); C22F 1/05 (2013.01 - EP); C22F 1/053 (2013.01 - EP)

Citation (opposition)

Opponent : CTEC CONSTELLIUM TECHNOLOGY CENTER

  • EP 2034035 A1 20090311 - KOBE STEEL LTD [JP]
  • US 2005006010 A1 20050113 - BENEDICTUS RINZE [NL], et al
  • US 2001001977 A1 20010531 - MARCOCCIA BRUNO S [US], et al
  • J. D. ROBSON ET AL.: "Dispersoid precipitation and process modelling in zirconium containing commercial aluminium alloys", ACTA MATER, vol. 49, 2001, pages 599 - 613, XP055713767
  • CHANDAN MONDAL ET AL.: "On the nature of T(A12Mg3Zn3) and S(A12CuMg) phases present in as-cast and annealed 7055 aluminum alloy", MATERIALS SCIENCE AND ENGINEERING A, vol. 391, 2005, pages 367 - 376, XP055713768
  • ANONYMOUS,: "ALCAST® AA 7035 Plaques coulees sciees", ALCAN ALUMINIUM VALAIS SA FICHE TECHNIQUE,, March 2004 (2004-03-01), pages 1, XP055713770
  • ANONYMOUS: "EuroMold", EUROMOLD, December 2006 (2006-12-01), pages 1 - 18, XP055713775
  • J.R. DAVIS: "ASM SPECIALITY HANDBOOK® - ALUMINUM AND ALUMINUM ALLOYS", 1993, ASM INTERNATIONAL, article "MOLTEN ALUMINIUM PROCESSING AND CASTING", pages: 199 - 204 & 213-218, XP055713779
  • N. A. LOKTIONOVA ET AL.: "Decrease of residual stresses in ingots of aluminum alloys", MET SCI HEAT TREAT, vol. 5, 1963, pages 666 - 668, XP055713783
  • ANONYMOUS: "ALLOY v95 (1950)", AUREMO, 2007, pages 5PP, XP055713788, Retrieved from the Internet <URL:https://auremo.biz/materials/splav-v95-1950.html>
  • ANONYMOUS: "АЛЮМИНИЙ И СПЛАВЫ АЛЮМИНИЕВЫЕ ДЕФОРМИРУЕМЫЕ Марки /Aluminium and Wrought Aluminium Alloys.Grades", ГОСТ 4784 97, 1997, pages i-iii,1 - 11, XP055713794
  • J.R. DAVIS ET AL.,: "in Metals Handbook Ninth Edition Volume 15 Casting,", 1988, ASM INTERNATIONAL, article "Metals Handbook Ninth Edition Volume 15 Casting /Passage/", pages: 757 - 762, 1pp, ii, XP055713799
  • CATRIN KAMMER: "Aluminium Handbook Volume 1: Fundamentals and Materials ,", 1999, ALUMINIUM VERLAG, article "6.4 Full annealing, stabilisation", pages: 250 - 251, XP055713803
  • ANONYMOUS: "Aluminium", GLEICH GMBH,, February 2000 (2000-02-01), pages 1pp, 3 - 9, XP055713804
  • KEH-MINN CHANG ET AL.: "Cracking control in DC casting of high-strength aluminum alloys", JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS, vol. 22, no. 1, 1999, pages 27 - 42, XP055713806
  • J.R. DAVIS: "ASM SPECIALITY HANDBOOK® - ALUMINUM AND ALUMINUM ALLOYS", 1993, ASM INTERNATIONAL, article "Fabrication and Finishing of Aluminum Alloys", pages: 296, 2pp, XP055713811
  • WILLIAM G. WOOD: "Metals Handbook Ninth Edition Volume 5 Surface Cleaning, Finishing, and Coating,", 1982, ASM INTERNATIONAL, article "Aluminium", pages: 585 - 591, XP055713814

Designated contracting state (EPC)

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

DOCDB simple family (publication)

EP 2130931 A1 20091209; EP 2130931 A4 20110323; EP 2130931 B1 20190918; EP 2130931 B2 20220803; KR 101151563 B1 20120530; KR 101197952 B1 20121105; KR 20090117951 A 20091116; KR 20110118186 A 20111028; TW 200900512 A 20090101; TW 201245462 A 20121116; TW I383053 B 20130121; TW I468527 B 20150111; WO 2008123355 A1 20081016

DOCDB simple family (application)

EP 08722912 A 20080327; JP 2008055873 W 20080327; KR 20097020395 A 20080327; KR 20117023623 A 20080327; TW 101129190 A 20080328; TW 97111205 A 20080328