Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2018054742) METHOD FOR PRODUCING FLAT STEEL PRODUCTS, AND A FLAT STEEL PRODUCT
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/054742 International Application No.: PCT/EP2017/073027
Publication Date: 29.03.2018 International Filing Date: 13.09.2017
IPC:
C21D 8/02 (2006.01) ,C23C 2/02 (2006.01) ,C23C 2/06 (2006.01) ,C23C 2/40 (2006.01) ,C21D 1/26 (2006.01) ,C22C 38/00 (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)
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
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
02
Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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
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
1
General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering
26
Methods of annealing
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
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
Applicants:
THYSSENKRUPP STEEL EUROPE AG [DE/DE]; Kaiser-Wilhelm-Str. 100 47166 Duisburg, DE
THYSSENKRUPP AG [DE/DE]; ThyssenKrupp Allee 1 45143 Essen, DE
Inventors:
FRIEDEL, Frank; DE
MACHEREY, Friedhelm; DE
SATTLER, Lena; DE
YANIK, Robert; DE
Agent:
COHAUSZ & FLORACK PATENT- UND RECHTSANWÄLTE PARTNERSCHAFTSGESELLSCHAFT MBB; Bleichstraße 14 40211 Düsseldorf, DE
Priority Data:
PCT/EP2016/07228120.09.2016EP
Title (EN) METHOD FOR PRODUCING FLAT STEEL PRODUCTS, AND A FLAT STEEL PRODUCT
(FR) PROCÉDÉ DE PRODUCTION DE PRODUITS PLATS EN ACIER ET PRODUIT PLAT EN ACIER
(DE) VERFAHREN ZUM HERSTELLEN VON STAHLFLACHPRODUKTEN UND STAHLFLACHPRODUKT
Abstract:
(EN) The invention relates to a method enabling the production of flat steel products which, after a 5% biaxial deformation on one of the surfaces, have a Wsa(1-5) value of <0.35 μm, a planar anisotropy Δr of -0.5 - +0.5, and a nano-hardness H of >0.1 to <3.0 GPa from the surface to a depth of <200 μm. To achieve this, a slab consisting of (in wt.%) 0.0003-0.050% C, 0.0001-0.20% Si, 0.01-1.5% Mn, 0.001-0.10% P, 0.0005%-0.030% S, 0.001-0.12% AI, 0.0001-0.01% N, in each case optionally 0.0001-0.15% Ti, 0.0001-0.05% Nb, <0.005% B, <0.15% Cu, <0.15% Cr, <0.15% Ni, <0.10% Mo, and <0.05% Sn, the remainder consisting of Fe and impurities, is: heated to a slab drop-out temperature BZT of 1200-1270°C; rough-rolled with a reduction in thickness of 80-90%; and then hot-rolled with a reduction in thickness of 85-95% with a final temperature of 850-950°C, a total deformation degree of 95-99.5%, and a reduction in thickness ΔdF in the last hot-rolling pass of 1-25%, to produce a finished flat steel product having a thickness of 3-5mm, said product being cooled at a rate of 4-30K/s to a coiling temperature HT of 620-780°C, and then coiled. After being pickled, the product is cold-rolled with a total deformation degree of 70-90%, and subjected to re-crystallisation annealing at 650-900°C. BZT, GLZ, ΔdF and HT thereby satisfy the condition -0.529653*Q+0.944372*HT_t+0.711559*ΔdF_J<-0.1889459, wherein BZT is in °C, GLZ is in min, HT is in °C, and ΔdF is in %, and, for Q=((BZT/GLZ)-5.553°C/min)/(1.777°C/min), the following applies; HT_t=(HT-728.13°C)/42.300°C and ΔdF_t=(ΔdF12.43384%)/2.306328%.
(FR) L’invention permet de produire des produits en acier plats qui ont, après une déformation biaxiale de 5% au niveau d’une de leurs surfaces, une valeur Wsa (1-5) < 0,35 μm, une anisotropie plane Δr de -0,5 - + 0,5 et, de sa surface à une profondeur < 200 μm, une nano-dureté H de > 0,1 à < 3,0 GPa. Pour cela, une brame, constituée de (en % en poids) 0,0003 à 0,050% de C, de 0,0001 à 0,20% de Si, de 0,01 à 1,5% de Mn, de 0,001 à 0,10% de P, de 0,0005 à 0,030% de S, de 0,001 à 0,12% d’Al, de 0,0001 à 0,01% de N, à chaque fois facultativement de 0,0001 à 0,15% de Ti, de 0,0001 à 0,05% de Nb , < 0,005% de B, < 0,15% de Cu, < 0,15% de Cr, < 0,15% de Ni, < 0,10% de Mo, < 0,05% de Sn et le reste étant du Fe et des impuretés, est chauffée à une température d’étirage de brame BZT de 1200 à 1270 °C, est soumise à un pré-laminage à chaud avec une réduction d’épaisseur de 80 à 90% puis est soumise à un laminage à chaud final avec une réduction d’épaisseur de 85 à 95% à une température finale de 850 à 950 °C, un degré de formage total de 95 à 99,5 % et une réduction d’épaisseur ΔdF dans la dernière passe de laminage à chaud de 1 à 25% pour obtenir un produit plat en acier de 3 à 5 mm d’épaisseur qui est refroidi, à raison 4 à 30 K/s, à une température de bobinage HT de 620 à 780 ° C et qui est bobiné. Après décapage, le produit est laminé à froid à un degré de formage total de 70 à 90 % et recuit à 650-900 °C avec recristallisation. BZT, GLZ, ΔdF et HT satisfont à la condition -0.529653*Q+0,944372*HT_t+0,711559*ΔdF_J<-0,1889459, Bzt étant en °C, GLZ en min, HT en °C et ΔdF en % et avec Q=(Bzt/GLZ)-5,553°C/min)/(1,777°C/min) ; HT_t=(HT-728,13 °C)/42,300 °C et AdF_t = (AdF12, 43384%)/2,306328%.
(DE) Die Erfindung ermöglicht die Herstellung von Stahlflachprodukten, die nach einer 5 % biaxialen Verformung an einer ihrer Oberflächen einen Wsa(1-5)-Wert von < 0,35 μm, eine planare Anisotropie Δr von -0,5 - +0,5 und von seiner Oberfläche aus bis zu einer Tiefe von < 200 μm eine Nanohärte H von > 0,1 bis < 3,0 GPa haben. Dazu wird eine Bramme aus (in Gew.-%) 0,0003 - 0,050 % C, 0,0001 - 0,20 % Si, 0,01 - 1,5 % Mn, 0,001 - 0,10 % P, 0,0005 - 0,030 % S, 0,001 - 0,12 % AI, 0,0001 - 0,01 % N, jeweils optional 0,0001 - 0,15 % Ti, 0,0001 - 0,05 % Nb, < 0,005 % B, < 0,15 % Cu, < 0,15 % Cr, < 0,15 % Ni, < 0,10 % Mo, < 0,05 % Sn und als Rest aus Fe und Verunreinigungen auf eine Brammenziehtemperatur BZT von 1200 - 1270 °C erwärmt, mit einer Dickenreduktion von 80 - 90 % vor- und sodann mit einer Dickenreduktion von 85 - 95 % bei einer Endtemperatur von 850 - 950 °C, einem Gesamtumformgrad von 95 - 99,5 % und einer Dickenreduktion ΔdF im letzten Warmwalzstich von 1 - 25 % zu einem 3 - 5 mm dicken Stahlflachprodukt fertig warmgewalzt, das mit 4 - 30 K/s auf eine Haspeltemperatur HT von 620 - 780 °C gekühlt und gehaspelt wird. Nach einem Beizen wird es mit einem Gesamtumformgrad von 70 - 90 % kaltgewalzt und bei 650 - 900 °C rekristallisierend geglüht. BZT, GLZ, ΔdF und HT genügen dabei der Bedingung -0,529653*Q+0,944372*HT_t+0,711559*ΔdF_J<-0,1889459, wobei Bzt in °C, GLZ in min, HT in °C und ΔdF in % einzusetzen sind und für Q=((Bzt/GLZ)-5,553°C/min)/(1,777°C/min); HT_t=(HT-728,13°C)/42,300°C sowie ΔdF_t=(AdF12, 43384%)/2,306328% gilt.
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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)