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1. WO2022004969 - STEEL SHEET FOR HOT PRESSING AND MANUFACTURING METHOD THEREOF

Publication Number WO/2022/004969
Publication Date 06.01.2022
International Application No. PCT/KR2020/016974
International Filing Date 26.11.2020
IPC
C21D 9/46 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
46for sheet metals
C23C 2/12 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
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
04characterised by the coating material
12Aluminium or alloys based thereon
C21D 8/02 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
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
C22C 38/06 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
06containing aluminium
B23K 20/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
20Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
Applicants
  • 현대제철 주식회사 HYUNDAI STEEL COMPANY [KR]/[KR]
Inventors
  • 김성민 KIM, Sung Min
  • 최혜림 CHOI, Hye Rim
Agents
  • 리앤목 특허법인 Y.P.LEE, MOCK & PARTNERS
Priority Data
10-2020-008041330.06.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) STEEL SHEET FOR HOT PRESSING AND MANUFACTURING METHOD THEREOF
(FR) TÔLE D'ACIER POUR COMPRESSION À CHAUD ET SON PROCÉDÉ DE FABRICATION
(KO) 열간 프레스용 강판 및 이의 제조 방법
Abstract
(EN) An embodiment of the present invention is a steel sheet for hot pressing comprising: a base steel sheet; and a plating layer positioned on the base steel sheet and having a diffusion layer and a surface layer which are sequentially stacked, wherein the diffusion layer comprises an Fe-Al alloy layer and an Fe-Al intermetallic compound layer sequentially positioned on the base steel sheet and each comprising silicon, and the area fraction of the Fe-Al intermetallic compound layer relative to the diffusion layer is 84.5% to 98.0%.
(FR) Un mode de réalisation de la présente invention concerne une tôle d'acier pour compression à chaud comprenant : une tôle d'acier de base ; et une couche de placage positionnée sur la tôle d'acier de base et comportant une couche de diffusion et une couche de surface qui sont empilées de manière séquentielle, la couche de diffusion comprenant une couche d'alliage Fe-Al et une couche de composé intermétallique Fe-Al positionnées de manière séquentielle sur la tôle d'acier de base et comprenant chacune du silicium, et la fraction de surface de la couche de composé intermétallique Fe-Al par rapport à la couche de diffusion allant de 84,5 % à 98,0 %.
(KO) 본 발명의 일 실시예는, 베이스 강판; 및 상기 베이스 강판 상에 위치하며 순차적으로 적층된 확산층과 표면층을 구비한 도금층;을 포함하고, 상기 확산층은, 상기 베이스 강판 상에 순차적으로 위치하며 각각 실리콘을 포함하는 Fe-Al 합금화층 및 Fe-Al 금속간 화합물층을 포함하고, 상기 확산층에 대한 상기 Fe-Al 금속간 화합물층의 면적분율이 84.5% 내지 98.0%인 열간 프레스용 강판을 개시한다.
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