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Rectangular steel pipe, manufacturing method thereof, and building structure

机译：矩形钢管，其制造方法和建筑结构

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摘要

A rectangular steel pipe, a manufacturing method thereof, and a building structure using the rectangular steel pipe are provided. The present invention is a rectangular steel pipe having a flat plate portion and a corner portion, has a specific component composition, and in the steel structure at a depth of 1/4 of the plate thickness t from the outer surface of the steel pipe, ferrite is an area ratio of 55% or more and 80% or less, the average aspect ratio of the hard phase is 0.1 to 0.8, the YS of the flat part is 350 MPa or more, and the TS is 520 MPa or more, and the ratio of YS of the flat part to each part is 0.80 or more and 0.90 or less, and the TS of the flat part to each part is The ratio is 0.90 or more and 1.00 or less, the Charpy absorbed energy at -40°C of the flat part is 100 J or more, and R of each part is (2.3×t) or more and (2.9×t) or less.

机译：提供了一种矩形钢管，其制造方法和使用矩形钢管的建筑物结构。本发明是一种矩形钢管，具有平板部分和拐角部分，具有特定的部件组合物，并且在钢结构的深度的钢结构中，从钢管的外表面的深度为1/4的深度。铁氧体是面积比为55％以上且80％以下，硬相的平均纵横比为0.1至0.8，平坦部分的Ys为350MPa或更大，TS为520MPa或更大，并且平坦部分的ys与每个部分的比率为0.80或更大，并且0.90或更小，并且平坦部分的Ts为每个部分的比例为0.90或更大，1.00或更低，夏比在-40处吸收能量为0.90或更大平坦部分的℃是100J或更大，每个部分的R是（2.3×T）或更高，（2.9×T）或更小。

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公开/公告号KR20210114041A

专利类型
公开/公告日2021-09-17

原文格式PDF
申请/专利权人 제이에프이 스틸 가부시키가이샤;
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申请/专利号KR20217025942
发明设计人 이데 신스케;마츠모토 아키히데;마츠모토 아츠시;오카베 다카토시;
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申请日2020-02-03
分类号C22C38/04;B21C37/08;B21D5/06;C22C38;C22C38/02;C22C38/06;C22C38/12;C22C38/14;C22C38/42;C22C38/44;C22C38/58;
国家 KR
入库时间 2022-08-24 21:08:43

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