Global Patent Index - EP 3250727 B1

EP 3250727 B1 20210707 - COMPONENT MADE OF PRESS-FORM-HARDENED, ALUMINUM-BASED COATED STEEL SHEET, AND METHOD FOR PRODUCING SUCH A COMPONENT

Title (en)

COMPONENT MADE OF PRESS-FORM-HARDENED, ALUMINUM-BASED COATED STEEL SHEET, AND METHOD FOR PRODUCING SUCH A COMPONENT

Title (de)

BAUTEIL AUS PRESSFORMGEHÄRTETEM, AUF BASIS VON ALUMINIUM BESCHICHTETEM STAHLBLECH UND VERFAHREN ZUR HERSTELLUNG EINES SOLCHEN BAUTEILS

Title (fr)

PIÈCE CONSTITUÉE DE TÔLE D'ACIER REVÊTUE À BASE D'ALUMINIUM DURCIE PAR MOULAGE PAR COMPRESSION ET PROCÉDÉ DE FABRICATION D'UNE TELLE PIÈCE

Publication

EP 3250727 B1 20210707 (DE)

Application

EP 17721056 A 20170413

Priority

  • DE 102016107152 A 20160418
  • EP 2017058918 W 20170413

Abstract (en)

[origin: WO2017182382A1] The invention relates to a component made of press-form-hardened, aluminium-based coated steel sheet, the coating having a covering which contains aluminum and silicon applied in the hot-dip process, characterized in that the press-form-hardened component in the transition region between steel sheet and covering has an inter-diffusion zone I, wherein, depending on the layer application of the covering before heating and press hardening, the thickness of the inter-diffusion zone I obeys the following formula: I [µm] < (1/35) x application on both sides [g/m2] + (19/7), on the inter-diffusion zone I there is formed a zone having various intermetallic phases having an average total thickness between 8 and 50 µm, on which zone there is in turn arranged a covering layer containing aluminum oxide and/or hydroxide having an average thickness of at least 0.05 µm to at most 5 µm. The invention further relates to a method for producing the aforementioned component.

IPC 8 full level

C23C 2/12 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01); C23C 8/02 (2006.01); C23C 8/10 (2006.01); C23C 8/80 (2006.01); C23C 28/00 (2006.01)

CPC (source: EP KR US)

C23C 2/12 (2013.01 - EP KR US); C23C 2/14 (2013.01 - KR); C23C 2/26 (2013.01 - EP US); C23C 2/261 (2022.08 - EP KR US); C23C 2/28 (2013.01 - EP US); C23C 2/29 (2022.08 - EP KR US); C23C 2/40 (2013.01 - EP KR US); C23C 8/02 (2013.01 - EP); C23C 8/10 (2013.01 - EP KR US); C23C 8/80 (2013.01 - EP KR US); C23C 28/321 (2013.01 - KR US); C23C 28/324 (2013.01 - EP KR); C23C 28/345 (2013.01 - EP KR US); Y10T 428/12757 (2015.01 - US)

Citation (opposition)

Opponent : ThyssenKrupp Steel Europe AG

  • WO 2015098653 A1 20150702 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
  • CA 2933039 A1 20150702 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
  • EP 2993248 A1 20160309 - THYSSENKRUPP STEEL EUROPE AG [DE], et al
  • US 2011300407 A1 20111208 - CHO YEOL-RAE [KR], et al
  • DE 2836878 C2 19840530
  • M WINDMANN ET AL: "Phase formation at the interface between a boron alloyed steel substrate and an Al-rich coating", SURFACE & COATINGS TECHNOLOGY, ELSEVIER B.V, 15 July 2013 (2013-07-15), pages 130 - 139, XP055498672, DOI: 10.1016/j.surfcoat.2013.03.045
  • RICHARDS, R. W.; JONES, R. D.; CLEMENTS, P. D.; CLARKE, H.: "Metallurgy of continuous hot dip aluminizing.", INTERNATIONAL MATERIALS REVIEWS, vol. 39, no. 5, 1 January 1994 (1994-01-01), US , pages 191 - 212, XP008156586, ISSN: 0950-6608, DOI: 10.1179/imr.1994.39.5.191
  • CHANG, Y.Y. TSAUR, C.C. ROCK, J.C.: "Microstructure studies of an aluminide coating on 9Cr-1Mo steel during high temperature oxidation", SURFACE AND COATINGS TECHNOLOGY, vol. 200, no. 22-23, 20 June 2006 (2006-06-20), NL , pages 6588 - 6593, XP005422353, ISSN: 0257-8972, DOI: 10.1016/j.surfcoat.2005.11.038
  • SPIESS LOTHAR, ET AL: "Materialcharakterisierungsverfahren Röntgenfluoreszenzanalyse (RFA) und Glimmentladungsspektroskopie (GDOES) im Alltag eines Werkstoffprüflabors", DGZFP-JAHRESTAGUNG 2010, 1 January 2010 (2010-01-01), pages 1 - 8, XP093042362
  • A. BENGTSON: "Quantitative depth profile analysis by glow discharge", SPECTROCHIMICA ACTA PART B: ATOMIC SPECTROSCOPY, vol. 49, no. 4, 1994, XP026556883, DOI: 10.1016/0584-8547(94)80034-0

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)

DE 102016107152 A1 20171019; DE 102016107152 B4 20171109; CN 109477197 A 20190315; CN 109477197 B 20211026; EP 3250727 A1 20171206; EP 3250727 B1 20210707; EP 3250727 B2 20240117; KR 102189424 B1 20201211; KR 20190003502 A 20190109; RU 2704339 C1 20191028; US 11339479 B2 20220524; US 2020308708 A1 20201001; WO 2017182382 A1 20171026

DOCDB simple family (application)

DE 102016107152 A 20160418; CN 201780024316 A 20170413; EP 17721056 A 20170413; EP 2017058918 W 20170413; KR 20187030273 A 20170413; RU 2018136149 A 20170413; US 201716093466 A 20170413