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Применить Всего найдено 3. Отображено 3.
16-01-2019 дата публикации

플럭스 코어드 와이어용 냉연강판 및 그 제조방법

Номер: KR1020190005271A
Автор: 김재익, 성민관, 김진아
Принадлежит:

... 본 발명의 일 측면은 저온인성, 용접 작업성 및 가공성이 우수한 플럭스 코어드 와이어용 냉연강판 및 그 제조방법을 제공하고자 하는 것이다. 본 발명의 일 실시형태는 중량%로, C: 0.005~0.10%, Mn: 0.05~0.25%, Si: 0.05% 이하(0%는 제외), P: 0.0005~0.01%, S: 0.008% 이하(0%는 제외), Al: 0.005~0.06%, N: 0.0005~0.003%, Ni: 0.8~1.7%, Cr: 0.1~0.5%, 나머지 Fe 및 불가피한 불순물을 포함하고, 하기 관계식 1로 정의되는 WN가 0.10~0.75인 플럭스 코어드 와이어용 냉연강판 및 그 제조방법을 제공한다. 관계식 1: WN= (31×C+0.5×Mn+20×Al)×(Ni)×(0.6×Cr) 본 발명의 일 측면에 따르면, 저온인성, 용접 작업성 및 가공성이 우수한 플럭스 코어드 와이어용 냉연강판을 제공함으로써 조선산업, 자재산업, 건축산업 등에 사용되는 전자세 용접이 가능한 플럭스 코어드 와이어형 용접봉 강대를 제공할 수 있다.

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Номер записи: 1
10-01-2019 дата публикации

COLD ROLLED STEEL SHEET FOR FLUX-CORED WIRE, AND MANUFACTURING METHOD THEREFOR

Номер: WO2019009636A1
Автор: KIM, Jai-Ik, SEONG, Min-Gwan, KIM, Jin-A
Принадлежит:

The purpose of one aspect of the present invention is to provide: a cold rolled steel sheet for a flux-cored wire, having excellent low temperature toughness, welding workability and processability; and a manufacturing method therefor. One embodiment of the present invention provides: a cold rolled steel sheet for a flux-cored wire, comprising, by wt%, 0.005-0.10% of C, 0.05-0.25% of Mn, 0.05% or less of Si (excluding 0%), 0.0005-0.01% of P, 0.008% or less of S (excluding 0%), 0.005-0.06% of Al, 0.0005-0.003% of N, 0.8-1.7% of Ni, 0.1-0.5% of Cr, and the balance of Fe and inevitable impurities, and having 0.10-0.75 of WN defined by relation 1 below; and a manufacturing method therefor. Relation 1: WN = (31×C+0.5×Mn+20×Al)×(Ni)×(0.6×Cr) According to one aspect to the present invention, provided is a cold rolled steel sheet for a flux-cored wire, having excellent low temperature toughness, welding workability and processability, and thus flux-cored wire type welding rod steel strips, which ...

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Номер записи: 2
16-05-2019 дата публикации

HIGH-STRENGTH, LOW-TOUGHNESS COLD-ROLLED STEEL SHEET HAVING EXCELLENT FRACTURE PROPERTIES, AND METHOD FOR PRODUCING SAME

Номер: WO2019093689A1
Автор: JANG, Je-Wook, HYUN, Young-Jin, KIM, Yong-Woo, MO, Kyeong-Woo, SEONG, Min-Gwan
Принадлежит:

Provided is a method for producing a high-strength, low-toughness cold-rolled steel sheet having excellent fracture properties. A cold-rolled steel sheet according to the present invention contains, in wt%, 0.30-0.70% of C, 0.2-1.0% of Mn, 0.005-0.5% of Si, 0.005-0.02% of P, no more than 0.01% of S, 0.01-0.1% of Al, and 0.005-0.1% of Cr, with the remainder comprising Fe and unavoidable impurities, wherein the steel microstructure is composed of 50-95% of pearlite, with the remainder being ferrite, the average grain size of the ferrite is 10-50 µm, the average pearlite colony size is 10-50 µm, the thickness of the steel sheet is 1.5-3.0 mmt, and a room-temperature impact toughness (Charpy absorbed energy) of 1.0-5.0 J (0.05-0.35 J/cm2) is satisfied.

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Номер записи: 3