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1. WO2020222394 - HOT-STAMPED PART AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2020/222394
Publication Date 05.11.2020
International Application No. PCT/KR2019/018501
International Filing Date 26.12.2019
IPC
B21D 22/02 2006.01
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
02Stamping using rigid devices or tools
B21D 37/16 2006.01
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
37Tools as parts of machines covered by this subclass
16Heating or cooling
C22C 38/38 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
38with more than 1.5% by weight of manganese
C22C 38/32 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
32with boron
Applicants
  • 현대제철 주식회사 HYUNDAI STEEL COMPANY [KR]/[KR]
Inventors
  • 공제열 KONG, Je Youl
  • 김지영 KIM, Ji Young
  • 박영철 PARK, Young Chul
  • 김혜진 KIM, Hye Jin
  • 유병길 YOO, Byung Gil
  • 육완 YOOK, Wan
  • 윤승채 YOON, Seung Chae
  • 임기학 YIM, Gi Hak
  • 장정환 JANG, Jeong Hwan
Agents
  • 특허법인 아주 AJU INTERNATIONAL LAW & PATENT GROUP
Priority Data
10-2019-005016530.04.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) HOT-STAMPED PART AND MANUFACTURING METHOD THEREFOR
(FR) PIÈCE ESTAMPÉE À CHAUD ET SON PROCÉDÉ DE FABRICATION
(KO) 핫 스탬핑 부품 및 그 제조방법
Abstract
(EN)
A hot-stamped part according to an embodiment of the present invention comprises, as a base layer, a steel comprising: 0.28-0.38 wt% of carbon (C); 0.1-0.4 wt% of silicon (Si); 1.2-2.0 wt% of manganese (Mn); from greater than 0 to 0.020 wt% of phosphorus (P); from greater than 0 to 0.003 wt% of sulfur (S); 0.1-0.5 wt% of chromium (Cr); 0.0015-0.0040 wt% of boron (B); 0.025-0.05 wt% of titanium (Ti); and the remainder of iron (Fe) and inevitable impurities, wherein the microstructure of the base layer is full martensite.
(FR)
La présente invention concerne, selon un mode de réalisation, une pièce estampée à chaud comprenant, en tant que couche de base, un acier comprenant : de 0,28 à 0,38 % en poids de carbone (C) ; de 0,1 à 0,4 % en poids de silicium (Si) ; de 1,2 à 2,0 % en poids de manganèse (Mn) ; de plus de 0 à 0,020 % en poids de phosphore (P) ; de plus de 0 à 0,003 % en poids de soufre (S) ; de 0,1 à 0,5 % en poids de chrome (Cr) ; de 0,0015 à 0,0040 % en poids de bore (B) ; de 0,025 à 0,05 % en poids de titane (Ti) ; et le reste étant composé de fer (Fe) et d’impuretés inévitables, la microstructure de la couche de base étant intégralement composée de martensite.
(KO)
본 발명의 일 실시예에 따른 핫 스탬핑 부품은 탄소(C): 0.28 ~ 0.38 중량%, 규소(Si): 0.1 ~ 0.4 중량%, 망간(Mn): 1.2 ~ 2.0 중량%, 인(P): 0 초과 0.020 중량% 이하, 황(S): 0 초과 0.003 중량% 이하, 크롬(Cr): 0.1 ~ 0.5 중량%, 붕소(B): 0.0015 ~ 0.0040 중량%, 티타늄(Ti): 0.025 ~ 0.05 중량%, 및 잔부의 철(Fe)과 불가피한 불순물로 조성되는 강재를 소지층으로 포함하며, 상기 소지층의 미세조직은 풀 마르텐사이트(full martensite)이다.
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