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1. WO2022044194 - SURFACE-TREATED STEEL SHEET AND METHOD FOR PROCESSING SURFACE-TREATED STEEL SHEET

Publication Number WO/2022/044194
Publication Date 03.03.2022
International Application No. PCT/JP2020/032349
International Filing Date 27.08.2020
IPC
B21D 22/20 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
22Shaping without cutting, by stamping, spinning, or deep-drawing
20Deep-drawing
C21D 9/00 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C22C 38/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C21D 1/18 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
C23C 22/50 2006.1
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
22Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05using aqueous solutions
06using aqueous acidic solutions with pH < 6
48not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
50Treatment of iron or alloys based thereon
CPC
B21D 22/20
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
22Shaping without cutting, by stamping, spinning, or deep-drawing
20Deep-drawing
C21D 1/18
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening
C21D 9/00
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C23C 22/50
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
22Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05using aqueous solutions
06using aqueous acidic solutions with pH less than 6
48not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
50Treatment of iron or alloys based thereon
Applicants
  • 日本製鉄株式会社 NIPPON STEEL CORPORATION [JP]/[JP]
Inventors
  • 岩津 智永 IWATSU, Tomonaga
  • 松野 雅典 MATSUNO, Masanori
  • 森 秀時 MORI, Hidetoki
  • 上野 晋 UENO, Shin
  • 清水 真 SHIMIZU, Makoto
Agents
  • 特許業務法人鷲田国際特許事務所 WASHIDA & ASSOCIATES
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SURFACE-TREATED STEEL SHEET AND METHOD FOR PROCESSING SURFACE-TREATED STEEL SHEET
(FR) TÔLE D'ACIER TRAITÉE EN SURFACE ET PROCÉDÉ DE TRAITEMENT DE TÔLE D'ACIER TRAITÉE EN SURFACE
(JA) 表面処理鋼板および表面処理鋼板の加工方法
Abstract
(EN) A purpose of the present invention is to provide a surface-treated steel sheet wherein scale is not readily produced when the steel sheet is processed by hot stamping. The present invention, which solves this problem, relates to a surface-treated steel sheet. This surface-treated steel sheet has: a steel sheet with a Cr content of 0.2 mass% to 2.0 mass%; and an alkali silicate film that is positioned in contact with a surface of the steel sheet.
(FR) Un objet de la présente invention est de fournir une tôle d'acier traitée en surface qui ne favorise pas l'apparition de calamine lorsque la tôle d'acier est traitée par estampage à chaud. La présente invention, qui résout ce problème, concerne une tôle d'acier traitée en surface. Cette tôle d'acier traitée en surface comprend : une tôle d'acier ayant une teneur en Cr de 0,2 % en masse à 2,0 % en masse ; et un film de silicate alcalin qui est positionné en contact avec une surface de la tôle d'acier.
(JA) 本発明は、ホットスタンピングによる鋼板の加工を行ったときにスケールが発生しにくい表面処理鋼板を提供することを目的とする。上記目的を達成するための本発明は、表面処理鋼板に関する。上記表面処理鋼板は、Crの含有量が0.2質量%以上2.0質量%以下である鋼板と、前記鋼板の表面に接して配置された、アルカリケイ酸塩皮膜と、を有する。
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