Development of Low Yield Point Steel LY225 for Anti-Seismic Building

Special Steel ›› 2017, Vol. 38 ›› Issue (2): 37-39.

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Development of Low Yield Point Steel LY225 for Anti-Seismic Building

Chen Zhenye¹ , Sun Li¹ , Wang Xiaoshu² , Wei Ming² , Zhang Haijun²

1. Centre Iron and Steel Technology Research Institute, Hebei Iron and Steel Group, Shijiazhuang 050023 ；
2. Wuyang Iron and Steel Co Ltd, Hebei Iron and Steel Group, Pingdingshan 462500

Received:2016-10-26 Online:2017-04-01 Published:2022-07-23

建筑抗震用低屈服点钢LY225的开发

陈振业¹，孙力¹，王晓书²，韦明²，张海军²

1. 河钢集团钢研总院,石家庄 050023;
2. 河钢集团舞阳钢铁有限责任公司,平顶山 462500;

作者简介:陈振业(1983-),男，硕士(2009年武汉科技大学)，高级工程师,2006年武汉科技大学(本科)毕业，中厚板新产品开发及新工艺研究。

Abstract

Abstract: The tested steel LY225 (/% : 0.07C, 0.05Si, 0.50Mn, 0.007P, 0.008S, 0.0050N) is melted by a 500 kg vacuum induction furnace, cast to 210 mm slab and rolled to 25 mm and 40 mm plate, finishing temperature 790~830℃ water cooling. The structure of LY225 steel plate normalized heated at 880~900℃ , air cooling is polygonal ferrite with grain size rating 7.5~8.5, yield strength 225~234 MPa, impact energy at 0℃ 285~294 J, and has better high- strain low-cycle fatigue property and weldability to meet the requirement of GB/T28905-2012 for mechanical properties of low yield point steel LY225 for anti-seismic building.

Key words: Steel LY225 for Anti-Seismic Building, Low Yield Point, Mechanical Properties, Polygonal Ferrite, Development

摘要： 试验用LY225钢（/%:0.07C,0.05Si,0.50Mn,0.007P,0.008S,0.0050N）由500 kg真空感应炉熔炼,浇铸成210 mm坯,并热轧成25 mm和40 mm板,终轧温度790~830℃水冷。LY225钢板经880~900℃正火后的组织为多边形铁素体,晶粒度为7.5~8.5级,屈服强度225~234 MPa,0℃下冲击性能285~294 J,具有良好的高应变低周疲劳性能和焊接性能,满足GB/T28905-2012对LY225级建筑抗震用低屈服点钢力学性能的要求。

关键词: 建筑抗震用钢LY225, 低屈服点, 力学性能, 多边形铁素体, 开发

Chen Zhenye , Sun Li , Wang Xiaoshu , Wei Ming , Zhang Haijun. Development of Low Yield Point Steel LY225 for Anti-Seismic Building[J]. Special Steel, 2017, 38(2): 37-39.

陈振业, 孙力, 王晓书, 韦明, 张海军. 建筑抗震用低屈服点钢LY225的开发[J]. 特殊钢, 2017, 38(2): 37-39.

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Development of Low Yield Point Steel LY225 for Anti-Seismic Building

建筑抗震用低屈服点钢LY225的开发

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