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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 28. Отображено 28.
14-01-2016 дата публикации

COLD ROLLED STEEL SHEET HAVING HIGH YIELD RATIO AND EXCELENT IMPACT PROPERTY AND METHOD FOR MANUFACTURING THE SAME

Номер: KR0101585739B1
Автор: 서창효, 한성호, 한상호, 안연상
Принадлежит: 주식회사 포스코

... 충격특성이 우수한 고항복비형 냉연강판 및 그 제조방법이 개시된다. 본 발명의 일 측면인 충격특성이 우수한 고항복비형 냉연강판은 중량%로, C: 0.05~0.1%, Si: 0.35% 이하, Mn: 0.5~1.5%, P: 0.001~0.10%, S: 0.008% 이하, Sol.Al: 0.025~0.07%, Cr: 1.5% 이하를 포함하고, Ti 및 Nb으로 이루어진 그룹에서 선택된 1종 이상을 합계 0.003~0.1%를 포함하며, 잔부 Fe 및 불가피한 불순물을 포함하고, {111} 집합조직의 면적분율이 15~25%인 것을 특징으로 한다.

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Номер записи: 1
03-07-2015 дата публикации

ULTRA-HIGH STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT SHAPE PROPERTY AND METHOD FOR MANUFACTURING SAME

Номер: KR1020150075321A
Автор: RYU, JOO HYUN, KOO, MIN SEO, LEE, KYOO YOUNG, KWAK, JAI HYUN, CHO, HANG SIK, BAE, SEONG BEOM, AHN, YEON SANG
Принадлежит:

Disclosed are an ultra-high strength cold rolled steel sheet having an excellent shape property and a method for manufacturing the same. According to an aspect of the present invention, the ultra-high strength cold rolled steel sheet having an excellent shape property, based on wt%, comprises: 0.1-0.3 wt% of C; less than or equal to 0.5 wt% of Si (excluding 0 wt%); 0.5-2.0 wt% of Mn; less than or equal to 0.03 wt% of P (excluding 0 wt%); less than or equal to 0.015 wt% of S (excluding 0 wt%); 0.01-0.1 wt% of Al; less than or equal to 0.5 wt% of Cr (excluding 0 wt%); 48/14×[N]~0.1 wt% of Ti; less than or equal to 0.1 wt% of Nb (excluding 0 wt%); less than or equal to 0.005 wt% of B (excluding 0 wt%); less than or equal to 0.01 wt% of N (excluding 0 wt%); and the remainder consisting of Fe and inevitable impurities. The C and the Mn satisfies the following interaction formula 1. [Interaction Formula 1] 3450C+207Mn>=1000. COPYRIGHT KIPO 2015 ...

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Номер записи: 2
30-06-2015 дата публикации

HIGH STRENGTH COLD ROLLED STEEL SHEET FOR VEHICLE WITH EXCELLENT SHAPE PROPERTY AND MANUFACTURING METHOD THEREOF

Номер: KR1020150072646A
Автор: KOO, MIN SEO, LEE, KYOO YOUNG, RYU, JOO HYUN, KWAK, JAI HYUN, CHO, HANG SIK, AHN, YEON SANG, SIN, DONG SEOUG
Принадлежит:

The present invention relates to a high strength cold rolled steel sheet for a vehicle with an excellent shape property and a manufacturing method thereof and, more specifically, a high strength cold rolled steel sheet for a vehicle with an excellent shape property and a manufacturing method thereof are appropriately applicable to a vehicle body member and the likes. The high strength cold rolled steel sheet comprises: 0.05 to 0.13 wt% of C; 0.5 wt% or less of Si (excluding 0); 1.0 to 2.0 wt% or more of Mn; 0.03 wt% or less of P(excluding 0); 0.015 wt% of less of S (excluding 0); 0.01 to 0.1 wt% of Al; 0.5 wt% or less of Cr (excluding 0); 48/14×[N] to 0.1 wt% of Ti; 0.1 wt% or less of Nb (excluding 0); 0.005 wt% or less of B (excluding 0); 0.01 wt% or less of N (excluding 0); and the remainder consisting of Fe and other inevitable impurities, and has, by area fraction, a microstructure including 10% or less (excluding 0) of ferrite and bainite and the remainder consisting of martensite.

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Номер записи: 3
14-09-2017 дата публикации

HOT-DIP GALVANIZED STEEL SHEET WITH SUPERIOR BAKE HARDENABILITY AND AGING RESISTANCE, AND MANUFACTURING METHOD THEREOF

Номер: WO2017155263A1
Автор: HAN, Sang-Ho, AHN, Yeon-Sang
Принадлежит:

Disclosed are a cold-rolled steel sheet having excellent bake hardenability and aging resistance, and a manufacturing method thereof. The cold-rolled steel sheet comprises, by weight %, 0.02-0.08% of C; 1.3-2.1% of Mn; 0.3% or less (excluding 0%) of Si; 1.0% or less (excluding 0%) of Cr; 0.1% or less (excluding 0%) of P; 0.01% or less (excluding 0%) of S; 0.01% or less (excluding 0%) of N; and 0.01-0.06% of sol.Al; at least one selected from the group consisting of 0.2% or less (excluding 0%) of Mo and 0.003% or less (excluding 0%) of B; and the balance being Fe and other inevitable impurities, wherein the steel sheet contains, as a microstructure thereof, 90-99% of ferrite and 1-10% of martensite in an area fraction,wherein a ratio (a/b) of an average carbon concentration a in the martensite and an average carbon concentration b in the ferrite located in an imaginary circle having a major axis of the martensite as a diameter, at a point of the sheet thickness of 1/4 t is 1.4 or less, and ...

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Номер записи: 4
02-07-2018 дата публикации

COLD ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY AND HOLE EXPANSION PROPERTY, AND METHOD OF MANUFACTURING SAME

Номер: KR1020180073008A
Автор: SEO, CHANG HYO, AHN, YEON SANG
Принадлежит:

The present invention relates to a cold rolled steel sheet and a method of manufacturing the same used as members during car collision and rescuing, and provides a cold rolled steel sheet having excellent bendability and hole expansion property and the method of manufacturing the same. According to a preferred embodiment of the present invention, the cold rolled steel includes 0.03 to 0.07 wt% C, 0.3 wt% or less (including 0 %) Si, 2.0 to 3.0 wt% Mn, 0.01 to 0.10 wt% Sol.Al, 0.3 to 1.2 wt% Cr, 0.03 to 0.08 wt% Ti, 0.01 to 0.05 wt% Nb, 0.0010 to 0.0050 wt% B, 0.001 to 0.10 wt% P, 0.010 wt% or less (including 0 %) S, f 0.010 wt% or less (including 0%) N, and the remainder Fe and other impurities, and has a transformed structure of 75 area % or more and less than 87 area %, and a microtissue including 13 to 25 area % ferrite, wherein the transformed structure includes martensite and bainite, wherein the martensite is 2μm or less in average diameter, and the bainite is 3μm or less in average ...

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Номер записи: 5
28-04-2022 дата публикации

ULTRA HIGH STRENGTH STEEL SHEET HAVING EXCELLENT DUCTILITY AND METHOD FOR MANUFACTURING THEREOF

Номер: WO2022086050A1
Автор: RYU, Joo-Hyun, AHN, Yeon-Sang, CHOI, Kang-Hyun, CHOI, Eul-Yong
Принадлежит:

The present invention relates to a steel sheet suitable for a vehicle material and, more specifically, to an ultra high strength steel sheet having excellent ductility.

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Номер записи: 6
10-11-2016 дата публикации

구멍확장성이 우수한 석출강화형 강판 및 그 제조방법

Номер: KR0101674751B1
Автор: 한상호, 안연상
Принадлежит: 주식회사 포스코

... 본 발명은 자동차용 멤버류 등의 구조부재로 사용될 수 있는 석출강화형 강판에 관한 것으로서, 특히 합금조성과 제조방법을 적절히 제어함으로써 구멍확장성이 우수한 석출강화형 강판 및 그 제조방법을 제공하고자 하는 것이다.

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Номер записи: 7
25-06-2020 дата публикации

COLD ROLLED STEEL SHEET HAVING EXCELLENT WORKABILITY, HOT-DIP GALVANIZED STEEL SHEET, AND MANUFACTURING METHODS THEREOF

Номер: WO2020130560A1
Автор: SEO, Chang-Hyo, AHN, Yeon-Sang, RYU, Joo-Hyun, LEE, Kyoo-Young, HONG, Won-Pyo
Принадлежит:

The present invention provides a cold rolled steel sheet having excellent workability, a hot-dip galvanized steel sheet, a hot-dip galvannealed steel sheet, and manufacturing methods therefor, the cold rolled steel sheet comprising, by wt%, 0.06-0.15% of carbon (C), 1.2% or less of silicon (Si) (excluding 0), 1.7-2.7% of manganese (Mn), 0.15% or less of molybdenum (Mo) (excluding 0), 1.0% or less of chromium (Cr) (excluding 0), 0.1% or less of phosphorus (P), 0.01% or less of sulfur (S), 0.001-0.04% of titanium (Ti), 0.001-0.04% of niobium (Nb), 0.01% or less of nitrogen (N), 0.01% or less of boron (B) (excluding 0), and the balance of Fe and other inevitable impurities, wherein the amounts of silicon (Si), carbon (C), manganese (Mn), molybdenum (Mo) and chromium (Cr) in the matrix structure at a point of thickness of 1/4t satisfy the following relation 1, the microstructure comprises, by area%, 10-70% of ferrite, 10-50% of bainite and retained austenite as the sum thereof, and the balance ...

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Номер записи: 8
13-05-2016 дата публикации

COMPOSITE STRUCTURE STEEL SHEET WITH EXCELLENT FORMABILITY AND METHOD TO MANUFACTURE SAME

Номер: KR101620750B1
Автор: HAN, SANG HO, AHN, YEON SANG
Принадлежит: POSCO

The present invention relates to a high-strength steel sheet. More specifically, provided are a method to manufacture a composite structure steel sheet, and a composite structure steel sheet with excellent formability which is appropriately used for a vehicle panel with excellent formability. The steel sheet comprises: 0.01-0.08 wt% of carbon (C), 1.5-2.5 wt% of manganese (Mn), 1.0 wt% or less of chromium (Cr) (excluding 0 wt%), 1.0 wt% or less of silicon (Si) (excluding 0 wt%), 0.1 wt% or less of phosphorus (P) (excluding 0 wt%), 0.01 wt% or less of sulfur (S) (excluding 0 wt%), 0.01 wt% or less of nitrogen (N) (excluding 0 wt%), 0.02-0.1 wt% of acid soluble aluminum (sol.Al), 0.1 wt% or less of molybdenum (Mo) (excluding 0 wt%), 0.003 wt% or less of boron (B) (excluding 0 wt%), and the remainder consisting of Fe and other inevitable impurities. COPYRIGHT KIPO 2016 (AA) Yielding ratio (YS/TS) (BB) Refining reduction ratio (%) ...

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Номер записи: 9
03-07-2015 дата публикации

COLD-ROLLED STEEL SHEET WITH HIGH YIELD RATIO AND EXCELLENT PROPERTIES AND MANUFACTURING METHOD THEREOF

Номер: KR1020150075325A
Автор: SEO, CHANG HYO, HAN, SEONG HO, HAN, SANG HO, AHN, YEON SANG
Принадлежит:

Disclosed are a cold-rolled steel sheet with a high yield ratio and excellent properties and a manufacturing method thereof. A cold-rolled steel sheet with a high yield ratio and excellent properties of an aspect of the present invention comprises 0.05-0.1 wt% of C, 0.35 wt% or less of Si, 0.5-1.5 wt% of Mn, 0.001-0.10 wt% of P, 0.008 wt% or less of S, 0.025-0.07 wt% of Sol.Al, 1.5 wt% or less of Cr, 0.003-0.1 wt% of at least one kind selected from a group composed of Ti and Nb, and the remainder consisting of Fe and inevitable impurities. The present invention is characterized in that the area % of a {111} texture is 15-25 %. COPYRIGHT KIPO 2015 ...

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Номер записи: 10
01-07-2015 дата публикации

PRECIPITATION HARDENING STEEL SHEET HAVING EXCELLENT HOLE EXPANDABILITY AND METHOD FOR MANUFACTURING SAME

Номер: KR1020150073844A
Автор: HAN, SANG HO, AHN, YEON SANG
Принадлежит:

The present invention relates to a precipitation hardening steel sheet which can be used as a structural member such as a member type for a vehicle or the like and, specifically, is to provide a precipitation hardening steel sheet having excellent hole expandability and a method for manufacturing the same, by appropriately controlling allow composition and a manufacturing method. COPYRIGHT KIPO 2015 ...

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Номер записи: 11
11-08-2015 дата публикации

ULTRA HIGH STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT SHAPE PROPERTY AND METHOD FOR MANUFACTURING THE SAME

Номер: KR0101543918B1
Автор: 류주현, 구민서, 이규영, 곽재현, 조항식, 배성범, 안연상
Принадлежит: 주식회사 포스코

... 형상 품질이 우수한 초고강도 냉연강판 및 그의 제조방법이 개시된다. 본 발명의 일 측면인 형상 품질이 우수한 초고강도 냉연강판은 중량%로, C: 0.1~0.3%, Si: 0.5% 이하(0은 제외), Mn: 0.5~2.0%, P: 0.03% 이하(0은 제외), S: 0.015% 이하(0은 제외), Al: 0.01~0.1%, Cr: 0.5% 이하(0은 제외), Ti: 48/14×[N]~0.1%, Nb: 0.1% 이하(0은 제외), B: 0.005% 이하(0은 제외), N: 0.01%이하(0은 제외), 잔부 Fe 및 기타 불가피한 불순물을 포함하고, 상기 C 및 Mn 은 하기 관계식 1을 만족하는 것을 특징으로 한다. [관계식 1] 3450C+207Mn≥1000 ...

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Номер записи: 12
28-06-2018 дата публикации

HIGH TENSILE STRENGTH STEEL HAVING EXCELLENT BENDABILITY AND STRETCH-FLANGEABILITY AND MANUFACTURING METHOD THEREOF

Номер: WO2018117500A1
Автор: AHN, Yeon-Sang, SEO, Chang-Hyo, PARK, Ki-Hyun
Принадлежит:

The present invention relates to high tensile strength steel having a tensile strength of 780 MPa grade or higher which is used for structural members of automobiles, and more specifically relates to high tensile strength steel having excellent bendability and stretch-flangeability while still satisfying characteristics of DP steels of low yield ratio and high ductility, and to a manufacturing method thereof.

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Номер записи: 13
27-04-2017 дата публикации

COMPOSITE TISSUE STEEL SHEET WITH EXCELLENT FORMABILITY AND METHOD FOR MANUFACTURING SAME

Номер: KR101726130B1
Автор: AN, YEON SANG, HAN, SANG HO
Принадлежит: POSCO

The present invention relates to a high-strength steel sheet, mainly used for a vehicle panel. More specifically, the present invention relates to a method for manufacturing the composite tissue steel sheet, and the composite tissue steel sheet with excellent formability. The present invention comprises: 0.02-0.1 wt% of carbon (C); 1.3-2.0 wt% of manganese (Mn); 0.2 wt% or less (except 0) of silicon (Si); 0.5-1.5 wt% of chromium (Cr); 0.1 wt% or less (except 0) of phosphorous (P); 0.01 wt% or less (except 0) of sulfur (S); 0.01 wt% or less (except 0) of nitrogen (N); 0.01-0.06 wt% of acid soluble Al (sol.Al); 0.2 wt% or less (except 0) of molybdenum (Mo); 0.003 wt% or less (except 0) of boron (B); and the balance of Fe and extra unavoidable impurities. COPYRIGHT KIPO 2017 (AA) Range of the present invention ...

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Номер записи: 14
11-11-2015 дата публикации

HIGH STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT SHAPE PROPERTY AND METHOD FOR MANUFACTURING THE SAME

Номер: KR0101568495B1
Автор: 구민서, 이규영, 류주현, 곽재현, 조항식, 안연상, 신동석
Принадлежит: 주식회사 포스코

... 본 발명은 우수한 형상 품질을 갖는 고강도 자동차용 냉연강판 및 그 제조방법에 관한 것으로서, 보다 상세하게는 자동차 차체용 부재 등에 바람직하게 적용될 수 있는 우수한 형상 품질을 갖는 고강도 자동차용 냉연강판 및 그 제조방법에 관한 것이다. 본 발명은 중량%로, C: 0.05~0.13%, Si: 0.5%이하(0은 제외), Mn: 1.0%이상~2.0중량%미만, P: 0.03%이하(0은 제외), S: 0.015%이하(0은 제외), Al: 0.01~0.1%, Cr: 0.5%이하(0은 제외), Ti: 48/14×[N]~0.1%, Nb: 0.1%이하(0은 제외), B: 0.005%이하(0은 제외), N: 0.01%이하(0은 제외), 잔부 Fe 및 기타 불가피한 불순물로 이루어지고, 면적분율로, 10%이하(0은 제외)의 페라이트 및 베이나이트와, 잔부 마르텐사이트로 이루어지는 미세조직을 가지는 우수한 형상 품질을 갖는 고강도 자동차용 냉연강판 및 그 제조방법을 제공한다. 본 발명에 따르면, 1000MPa이상의 고강도를 가지면서도 형상 품질 또한 매우 우수한 자동차용 냉연강판을 제공할 수 있다.

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Номер записи: 15
08-05-2015 дата публикации

DUAL PHASE STEEL PLATE WITH EXCELLENT MACHINABILITY AND MANUFACTURING METHOD THEREOF

Номер: KR1020150050001A
Автор: AHN, YEON SANG, HAN, SANG HO, CHOO, SE DON, CHOI, EUL YONG
Принадлежит:

Provided are a dual phase steel plate with excellent machinability, and a manufacturing method thereof. According to the present invention, the dual phase steel plate with excellent machinability comprises: 0.1 wt% or less of C (0 is not included); 1.8 wt% or less of Mn (0 is not included); 0.01-0.07 wt% of P; 0.01 wt% or less of S (0 is not included); 0.01 wt% or less of N (0 is not included); 1.0 wt% or less of Si (0 is not included); 0.02-0.1 wt% of acid-soluble Al; 0.005-0.1 wt% of Sb; 0.003 wt% or less of B (0 is not included); and the remainder consisting of Fe and other inevitable impurities. In the inner tissues of the steel plate, an occupation ratio (M%) of fine martensite with a mean particle size of less than 1 μm exists in ferrite grain boundary defined as equation 1 is 90% or greater. An area ratio (B%) of bainite among the 2-phase tissues defined in equation 2 is 5% or less. COPYRIGHT KIPO 2015 ...

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Номер записи: 16
27-06-2019 дата публикации

HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT PROCESSABILITY AND METHOD FOR MANUFACTURING SAME

Номер: WO2019124693A1
Автор: AHN, Yeon-Sang, SEO, Chang-Hyo, CHOI, Kang-Hyun, CHOI, Eul-Yong
Принадлежит:

According to an aspect of the present invention, provided is a high-strength steel sheet having a tensile strength of 780MPa or higher. The high-strength steel sheet has a low yield ratio and excellent ductility (El) and strain hardening exponent (n) and thus has enhanced processability.

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Номер записи: 17
27-06-2018 дата публикации

HIGH TENSILE STEEL WITH EXCELLENT BENDABILITY AND STRETCH FLANGE PROPERTY AND MANUFACTURING METHOD THEREOF

Номер: KR1020180070895A
Автор: AHN, YEON SANG, SEO, CHANG HYO, PARK, KI HYUN
Принадлежит:

The present invention relates to a high tensile steel used for a structural member of a vehicle and, more specifically, to the high tensile steel with excellent formability and burring properties, and a manufacturing method thereof. According to the present invention, an element steel plate comprises: 0.05 to 0.15 weight percent of C; 1.5 weight percent or less of Si (excluding 0 weight percent); 1.5 to 2.5 weight percent of Mn; 0.2 weight percent or less of Mo (excluding 0 weight percent); 1.5 weight percent or less of Cr (excluding 0 weight percent); 0.1 weight percent or less of P (excluding 0 weight percent); 0.01 weight percent or less of S (excluding 0 weight percent); 0.02 to 0.06 weight percent of Al (soluble Al); 0.003 to 0.06 weight percent of Ti; 0.003 to 0.06 weight percent of Nb; 0.01 weight percent or less of N (excluding 0 weight percent); 0.003 weight percent or less of B (excluding 0 weight percent); and the remainder being Fe and unavoidable impurities. COPYRIGHT KIPO ...

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Номер записи: 18
16-06-2016 дата публикации

DUAL-PHASE STEEL SHEET WITH EXCELLENT FORMABILITY AND MANUFACTURING METHOD THEREFOR

Номер: WO2016093513A3
Автор: HAN, Sang-Ho, AHN, Yeon-Sang
Принадлежит:

The present invention relates to a high-strength steel sheet and, more specifically, to a dual-phase steel sheet having excellent formability so as to be appropriately applied to vehicle panels and the like, and a manufacturing method therefor.

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Номер записи: 19
16-06-2016 дата публикации

DUAL-PHASE STEEL SHEET WITH EXCELLENT FORMABILITY AND MANUFACTURING METHOD THEREFOR

Номер: WO2016093513A2
Автор: HAN, Sang-Ho, AHN, Yeon-Sang
Принадлежит:

The present invention relates to a high-strength steel sheet and, more specifically, to a dual-phase steel sheet having excellent formability so as to be appropriately applied to vehicle panels and the like, and a manufacturing method therefor.

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Номер записи: 20
27-06-2019 дата публикации

HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT IMPACT PROPERTIES AND FORMABILITY AND METHOD FOR MANUFACTURING SAME

Номер: WO2019124688A1
Автор: AHN, Yeon-Sang, SEO, Chang-Hyo, CHOI, Kang-Hyun
Принадлежит:

An aspect of the present invention relates to a high-strength steel sheet having tensile strength of 980MPa or higher and, more specifically, to a high-strength steel sheet having low yield strength, high bendability, excellent ductility and enhanced formability.

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Номер записи: 21
16-08-2018 дата публикации

굽힘성 및 신장플랜지성이 우수한 고장력강 및 이의 제조방법

Номер: KR0101889181B1
Автор: 안연상, 서창효, 박기현
Принадлежит: 주식회사 포스코

... 본 발명은 자동차 구조부재용으로 사용되는 고장력강에 관하 것으로서, 보다 상세하게는 성형성 및 버링성이 우수한 고장력강 및 이의 제조방법에 관한 것이다.

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Номер записи: 22
09-11-2018 дата публикации

굽힘가공성과 구멍확장성이 우수한 냉연강판 및 그 제조방법

Номер: KR0101917452B1
Автор: 서창효, 안연상
Принадлежит: 주식회사 포스코

... 본 발명은 자동차 충돌 및 구조부재 등에 사용되는 냉연강판 및 그 제조방법에 관한 것으로서, 굽힘가공성과 구멍확장성이 우수한 냉연강판 및 그 제조벙법을 제공하고자 하는 것이다. 본 발명의 바람직한 예에 의하면, 중량%로, C: 0.03 ~ 0.07%, Si: 0.3%이하(0 포함), Mn: 2.0 ~ 3.0%, Sol.Al: 0.01~0.10%, Cr: 0.3 ~ 1.2%, Ti: 0.03-0.08%, Nb:0.01-0.05%, B: 0.0010-0.0050%, P: 0.001 ~ 0.10%, S: 0.010%이하(0 포함), N: 0.010%이하(0 포함), 나머지는 Fe 및 기타의 불순물을 포함하고, 75 면적% 이상 87 면적%미만의 변태조직 및 13~25 면적%의 페라이트를 포함하는 미세조직을 갖고, 상기 변태조직은 마르텐사이트 및 베이나이트를 포함하고, 상기 마르텐사이트 평균입경은 2㎛이하이고, 상기 베이나이트의 평균입경은 3㎛이하이며, 3㎛이상의 베이나이트 분율은 5%이하이고, 상(phase)간 경도비가 1.4 이하인 굽힘가공성과 구멍확장성이 우수한 냉연강판 및 그 제조방법이 제공된다. 본 발명에 의하면, 굽힘가공성과 구멍확장성이 우수한 고 항복비 냉연강판을 제공할 수 있는 효과가 있다.

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Номер записи: 23
04-07-2013 дата публикации

SUPER HIGH STRENGTH COLD ROLLED STEEL PLATE HAVING EXCELLENT WELDABILITY AND BENDING-WORKABILITY AND MANUFACTURING METHOD THEREOF

Номер: WO2013100485A1
Автор: HAN, Seong-Ho, CHO, Hang-Sik, HAN, Tae-Kyo, AHN, Yeon-Sang
Принадлежит:

The present invention relates to a super high strength cold rolled steel plate which has excellent weldability and bending-workability so as to be used as a steel sheet for a vehicle, and a method for manufacturing the same.

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Номер записи: 24
11-08-2017 дата публикации

MOLTEN ZINC STEEL SHEET WITH EXCELLENT BAKE HARDENABILITY AND AGING RESISTANCE AND MANUFACTURING METHOD THEREOF

Номер: KR101767818B1
Автор: HAN, SANG HO, AHN, YEON SANG
Принадлежит: POSCO

Disclosed are a molten zinc steel sheet with excellent bake hardenability and aging resistance; and a manufacturing method thereof. The molten zinc steel sheet comprises: 0.02-0.08 wt% of C, 1.3-2.1 wt% of Mn, 0.3 wt% or less of Si (excluding 0 wt%), 1.0 wt% or less of Cr (excluding 0 wt%), 0.1 wt% or less of P (excluding 0 wt%), 0.01 wt% or less of S (excluding 0 wt%), 0.01 wt% or less of N (excluding 0 wt%), 0.01-0.06 wt% of sol.Al, and at least one among a group composed of 0.2 wt% or less of Mo (excluding 0 wt%) and 0.003 wt% or less of B (excluding 0 wt%). Additionally, the molten zinc steel sheet with excellent bake hardenability and aging resistance includes inevitable impurities and the remaining consisting of Fe, 90-99 area% of ferrite, and 1-10 area% of martensite as a microstructure. In the present invention, a ratio of a/b is 1.4 or less (here, ′a′ is an average density of carbon of martensite at a 1/4 point of a thickness of the sheet, and ′b′ is an average density of carbon ...

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Номер записи: 25
27-06-2019 дата публикации

HIGH YIELD RATIO-TYPE HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Номер: WO2019124766A1
Автор: SEO, Chang-Hyo, AHN, Yeon-Sang
Принадлежит:

The present invention relates to a high-strength steel sheet and a method for manufacturing the same and, more specifically, to a high-strength steel sheet having a high yield ratio and excellent plating-wettability and stretch-flangeability, and a method for manufacturing the same.

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Номер записи: 26
28-06-2018 дата публикации

COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY AND HOLE EXPANDABILITY AND METHOD FOR MANUFACTURING SAME

Номер: WO2018117711A1
Автор: SEO, Chang-Hyo, AHN, Yeon-Sang
Принадлежит:

According to the present invention, provided are a cold-rolled steel sheet having excellent bendability and hole expandability, and a method for manufacturing same, the steel sheet containing, by weight %, 0.03 to 0.07% of C, 0.3% or less (including 0) of Si, 2.0 to 3.0% of Mn, 0.01 to 0.10% of Sol.Al, 0.3 to 1.2% of Cr, 0.03 to 0.08% of Ti, 0.01 to 0.05 of Nb, 0.0010 to 0.0050% of B, 0.001-0.10% of P, 0.010% or less (including 0) of S, 0.010% or less (including 0) of N, the balance being Fe and other impurities, and having a microstructure comprising 75% or more to 87% or less by area of a transformed structure and 13 to 25% by area of ferrite, wherein the transformed structure includes martensite and bainite, the martensite has an average particle diameter of 2 ㎛ or less, the bainite has an average particle diameter of 3 ㎛ or less, the bainite fraction of 3 ㎛ or more is 5% or less, and the interphase hardness ratio is 1.4 or less.

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Номер записи: 27
11-08-2015 дата публикации

Composite structure steel sheet with superior workability, and its manufacturing method

Номер: KR0101543857B1
Автор: 안연상, 한상호, 주세돈, 최을용
Принадлежит: 주식회사 포스코

... 가공성이 우수한 복합조직강판 및 그 제조방법이 제공된다. 본 발명은,중량%로 C:0.1%이하(0은 제외), Mn:1.8%이하(0은 제외), P:0.01~0.07%, S:0.01%이하(0은 제외), N:0.01%이하(0은 제외), Si:1.0%이하(0은 제외), 산가용성 Al:0.02~0.1%, Sb: 0.005~0.1%, B:0.003%이하(0은 제외), 잔부 Fe 및 기타 불가피한 불순물을 포함하고, 상기 강판은 그 내부조직에 소정의 [수식 1]에 정의되는 페라이트 결정립계에 존재하는 평균 입경 1㎛ 미만의 미세 마르텐사이트의 점유비(M%)가 90% 이상이며, 그리고 소정의 [수식 2]에 정의되는 전체 2상 조직중 베이나이트의 면적비(B%)가 5%이하인 가공성이 우수한 복합조직강판 및 그 제조방법에 관한 것이다.

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Номер записи: 28