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1. (WO2018220873) HIGH-STRENGTH Zn-Al-Mg-BASED SURFACE-COATED STEEL SHEET AND METHOD FOR PRODUCING SAME
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Pub. No.: WO/2018/220873 International Application No.: PCT/JP2017/031654
Publication Date: 06.12.2018 International Filing Date: 01.09.2017
IPC:
C23C 2/06 (2006.01) ,C22C 18/00 (2006.01) ,C22C 18/04 (2006.01) ,C22C 38/00 (2006.01) ,C22C 38/38 (2006.01) ,C23C 2/02 (2006.01) ,C23C 2/26 (2006.01) ,C23C 2/28 (2006.01)
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
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
18
Alloys based on zinc
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
18
Alloys based on zinc
04
with aluminium as the next major constituent
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
18
containing chromium
38
with more than 1.5% by weight of manganese
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
26
After-treatment
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
26
After-treatment
28
Thermal after-treatment, e.g. treatment in oil bath
Applicants:
日新製鋼株式会社 NISSHIN STEEL CO., LTD. [JP/JP]; 東京都千代田区丸の内三丁目4番1号 4-1, Marunouchi 3-chome, Chiyoda-ku, Tokyo 1008366, JP
Inventors:
藤原 進 FUJIWARA Susumu; JP
植杉 真也 UESUGI Shinya; JP
重富 智治 SHIGETOMI Tomoharu; JP
Agent:
小松 高 KOMATSU Takashi; JP
Priority Data:
2017-10957501.06.2017JP
Title (EN) HIGH-STRENGTH Zn-Al-Mg-BASED SURFACE-COATED STEEL SHEET AND METHOD FOR PRODUCING SAME
(FR) TÔLE D'ACIER À REVÊTEMENT DE SURFACE À BASE DE Zn-Al-Mg À HAUTE RÉSISTANCE ET SON PROCÉDÉ DE PRODUCTION
(JA) 高強度Zn-Al-Mg系表面被覆鋼板およびその製造方法
Abstract:
(EN) [Problem] To provide a high-strength hot dip Zn-Al-Mg-based plated steel sheet in which the in-steel concentration of hydrogen entering the steel in a plating line is remarkably lowered, and which exhibits the inherent excellent corrosion resistance of a Zn-Al-Mg-based plated layer. [Solution] A high strength surface-coated steel sheet comprising a Zn-Al-Mg-based coating layer disposed on the surface of a substrate steel sheet containing, in terms of % by mass, 0.01%-0.20% of C, 0.01%-0.50% of Si, 0.10%-2.50% of Mn, 0.005%-0.050% of P, 0.0005%-0.010% of B, 0.01%-0.20% of Ti, 0%-0.10% of Nb, 0%-0.50% of Mo, 0%-0.50% of Cr, 0.01%-0.10% of Al, and the balance Fe and inevitable impurities, wherein the diffusible hydrogen concentration in the substrate steel sheet is 0.30 ppm or less, and the time until rust is generated in a salt spray test is 7000 hours or longer.
(FR) [Problème] Fournir une tôle d'acier à placage à base de Zn-Al-Mg à haute résistance dans laquelle la concentration dans l'acier d'hydrogène entrant dans l'acier dans une ligne de placage est remarquablement réduite, et qui présente l'excellente résistance à la corrosion inhérente d'une couche plaquée à base de Zn-Al-Mg. [Solution] La présente invention concerne une tôle d'acier revêtue en surface à haute résistance comprenant une couche de revêtement à base de Zn-Al-Mg disposée sur la surface d'une tôle d'acier de substrat contenant, en termes de % en masse, 0,01 % à 0,20 % de C, 0,01 % à 0,50 % de Si, 0,10 % à 2,50 % de Mn, 0,005 % à 0,050 % de P, 0,0005 % à 0,010 % de B, 0,01 % à 0,20 % de Ti, 0 % à 0,10 % de Nb, 0 % à 0,50 % de Mo, 0 % à 0,50 % de Cr, 0,01 % à 0,10 % d'Al, et le reste étant Fe et des impuretés inévitables, la concentration d'hydrogène diffusible dans la tôle d'acier de substrat étant de 0,30 ppm ou moins, et le temps jusqu'à ce que de la rouille soit générée dans un essai de pulvérisation de sel est de 7000 heures ou plus.
(JA) 【課題】溶融Zn-Al-Mg系めっきを施した高強度鋼板において、めっきラインで鋼中に侵入した水素の鋼中濃度が顕著に低減されており、かつZn-Al-Mg系めっき層本来の優れた耐食性を発揮する鋼板を提供する。 【解決手段】質量%で、C:0.01~0.20%、Si:0.01~0.50%、Mn:0.10~2.50%、P:0.005~0.050%、B:0.0005~0.010%、Ti:0.01~0.20%、Nb:0~0.10%、Mo:0~0.50%、Cr:0~0.50%、Al:0.01~0.10%、残部Feおよび不可避的不純物である基材鋼板の表面にZn-Al-Mg系被覆層を有し、前記基材鋼板中の拡散性水素濃度が0.30ppm以下であり、塩水噴霧試験による赤錆発生までの時間が7000時間以上である高強度表面被覆鋼板。
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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, 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: Japanese (JA)
Filing Language: Japanese (JA)