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1. (WO2019063081) FLAT STEEL PRODUCT AND METHOD FOR THE PRODUCTION THEREOF
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/063081 International Application No.: PCT/EP2017/074642
Publication Date: 04.04.2019 International Filing Date: 28.09.2017
IPC:
C22C 38/00 (2006.01) ,C21D 6/00 (2006.01) ,C21D 8/00 (2006.01) ,C21D 8/02 (2006.01) ,C21D 8/04 (2006.01) ,C22C 38/02 (2006.01) ,C22C 38/04 (2006.01) ,C22C 38/06 (2006.01) ,C22C 38/12 (2006.01) ,C22C 38/14 (2006.01) ,C22C 38/18 (2006.01) ,C21D 9/46 (2006.01) ,C23C 2/00 (2006.01) ,C23C 2/04 (2006.01) ,C23C 2/06 (2006.01) ,C23C 2/34 (2006.01) ,C23C 2/40 (2006.01) ,C21D 9/48 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
6
Heat treatment of ferrous alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
02
during manufacturing of plates or strips
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
02
during manufacturing of plates or strips
04
to produce plates or strips for deep-drawing
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
02
containing silicon
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
04
containing manganese
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
06
containing aluminium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
12
containing tungsten, tantalum, molybdenum, vanadium or niobium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
14
containing titanium or zirconium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
46
for sheet metals
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
04
characterised by the coating material
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
04
characterised by the coating material
06
Zinc or cadmium or alloys based thereon
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
34
characterised by the shape of the material to be treated
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
34
characterised by the shape of the material to be treated
36
Elongated material
40
Plates; Strips
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
46
for sheet metals
48
deep-drawing sheets
Applicants:
THYSSENKRUPP STEEL EUROPE AG [DE/DE]; Kaiser-Wilhelm-Straße 100 47166 Duisburg, DE
THYSSENKRUPP AG [DE/DE]; ThyssenKrupp Allee 1 45143 Essen, DE
Inventors:
THIESSEN, Richard Georg; NL
AHRENHOLD, Manuela; DE
LINKE, Bernd; DE
RUDOLPH, Jan-hendrik; DE
FECHTE-HEINEN, Rainer; DE
Agent:
THYSSENKRUPP INTELLECTUAL PROPERTY GMBH; ThyssenKrupp Allee 1 45143 Essen, DE
Priority Data:
Title (DE) STAHLFLACHPRODUKT UND VERFAHREN ZU SEINER HERSTELLUNG
(EN) FLAT STEEL PRODUCT AND METHOD FOR THE PRODUCTION THEREOF
(FR) PRODUIT PLAT EN ACIER ET SON PROCÉDÉ DE FABRICATION
Abstract:
(DE) Die Erfindung betrifft ein für eine Bake-Hardening-Behandlung geeignetes höchstfestes Stahlflachprodukt sowie ein Verfahren zur Herstellung eines solchen Stahlflachprodukts. Das Stahlflachprodukt besteht aus einem Stahl, der aus (in Gew.-%) 0,1 - 0,5 % C, 1,0 - 3,0 % Mn, 0,5 - 2,0 % Si, 0,01 - 1,5 % Al, 0,001 - 0,008 % N, bis zu 0,02 % P, bis zu 0,005 % S sowie optional aus einem oder mehreren der folgenden Elemente 0,01 - 1,0 % Cr, 0,01 - 0,2 % Mo, 0,001 - 0,01 % B sowie optional aus in Summe 0,005 - 0,2 % V, Ti und Nb, wobei der Ti-Anteil nicht mehr als 0,10 % beträgt, und als Rest Eisen und unvermeidbaren Verunreinigungen besteht, und wobei das Stahlflachprodukt ein Gefüge aufweist, das aus nicht mehr als 15 Flächen-% Ferrit, nicht mehr als 5 Flächen-% Bainit, mindestens Volumen-% Restaustenit und mindestens 80 Flächen-% Martensit, von welchem mindestens 75 Flächen-% angelassener Martensit ist, besteht.
(EN) The invention relates to a bake hardening treatment of a suitable very high-strength flat steel product and to a method for producing such a flat steel product. The flat steel product consists of a steel that consists of (in wt%) 0.1-0.5% C, 1.0-3.0% Mn, 0.5-2.0% Si, 0.01-1.5% Al, 0.001-0.008% N, up to 0.02% P, up to 0.005% S and optionally one or more of the following elements: 0.01-1.0% Cr, 0.01-0.2% Mo, 0.001-0.01% B, and optionally a total of 0.005-0.2% V, Ti and Nb, the Ti proportion not being more than 0.10%, and, as the remainder, iron and unavoidable impurities. The flat steel product has a microstructure that consists of not more than 15 area % ferrite, not more than 5 area % bainite, at least 5 volume % residual austenite and at least 80 area % martensite, of which at least 75 area % is tempered martensite.
(FR) L'invention concerne un produit plat en acier extrêmement résistant, approprié pour un traitement de durcissement par cuisson, ainsi qu'un procédé de fabrication d'un tel produit plat en acier. Le produit plat en acier est constitué d'un acier qui est constitué (en % en poids) de 0,1 à 0,5 % de C, de 1,0 à 3,0 % de Mn, de 0,5 à 2,0 % de Si, de 0,01 à 1,5 % de Al, de 0,001 à 0,008 % de N, d'au plus 0,02 % de P, d'au plus 0,005 % de S, ainsi qu'éventuellement d'un ou plusieurs des éléments suivants : Cr : 0,01 à 1,0 %, Mo : 0,01 à 0,2 %, B : 0,001 à 0,01 %, ainsi qu'éventuellement de 0,005 à 0,2 % au total de V, Ti et Nb, la teneur en Ti étant de moins de 0,10 %, le reste étant du fer et des impuretés inévitables, et le produit plat en acier présentant une structure qui est constituée de moins de 15 % en aire de ferrite, de moins de 5 % en aire de bainite, d'au moins 5 % en volume d'austénite résiduelle et d'au moins 80 % en aire de martensite, dont au moins 75 % en aire de martensite revenue.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)