高强韧耐候桥梁钢Q500qENH的生产工艺

doi:10.13251/j.issn.0254-6051.2021.08.026

金属热处理 ›› 2021, Vol. 46 ›› Issue (8): 139-143.DOI: 10.13251/j.issn.0254-6051.2021.08.026

高强韧耐候桥梁钢Q500qENH的生产工艺

彭宁琦, 何航, 罗登, 范明, 李中平

湖南华菱湘潭钢铁有限公司技术质量部, 湖南湘潭 411101

收稿日期:2021-03-27 出版日期:2021-08-25 发布日期:2021-12-09
作者简介:彭宁琦(1981—),男,高级工程师,博士,主要研究方向为钢铁热加工、热处理过程的组织和性能,E-mail: pengningqi@163.com
基金资助:
长株潭国家自主创新示范区专项(2018XK2301);湘潭市科技计划(CG(GX)-ZD20172028)

Production process of high strength and toughness weather-resistant bridge steel Q500qENH

Peng Ningqi, He Hang, Luo Deng, Fan Ming, Li Zhongping

Technology and Quality Department, Hunan Valin Xiangtan Iron and Steel Co., Ltd., Xiangtan Hunan 411101, China

Received:2021-03-27 Online:2021-08-25 Published:2021-12-09

摘要/Abstract

摘要： 利用MMS-200热模拟试验机和实验室电炉进行热模拟试验和热处理试验,通过硬度、拉伸和冲击性能检测及显微组织观察,对高强韧耐候桥梁钢Q500qENH的控轧控冷工艺和热处理工艺进行了研究。结果表明:高强韧耐候桥梁钢Q500qENH宜采用热机械轧制(TMCP)+回火的生产工艺;冷却速度10~20 ℃/s、返红温度500~550 ℃、回火温度450~500 ℃时,试验钢的高强韧性和低屈强比匹配较佳;TMCP态的组织以板条贝氏体为主,回火后组织逐渐由板条状向粒状转变,且原奥氏体晶界变得更清晰;随回火温度的升高,试验钢的拉伸曲线由拱顶型向吕德斯型变化。

关键词: Q500qENH钢, 耐候钢, 耐大气腐蚀, 热机械轧制工艺(TMCP), 回火

Abstract: Thermal simulation test and heat treatment test were respectively performed on MMS-200 thermo simulator and laboratory electric heat treatment furnace, then the cooling process and heat treatment process of the high strength and toughness Q500qENH weathering steel for bridge were studied by means of hardness test, tensile and impact properties testing and metallurgical structure observation. The results show that the production process for high strength and toughness Q500qENH weathering steel for bridge includes thermomechanical control process(TMCP) plus tempering. When the cooling rate is 10-20 ℃/s, the re-reddening temperature is 500-550 ℃ and the tempering temperature is 450-500 ℃, the tested steel has better match of high strength-toughness and low yield-strength ratio. The microstructure by TMCP is mainly lath bainite, and after tempering, the microstructure gradually changes from bath to granular and the original austenite grain boundary becomes clearer. Tensile curve of the tested steel changes from vault type to Ludes type with the increase of tempering temperature.

Key words: Q500qENH steel, weathering steel, atmospheric corrosion resistance, thermomechanical control process(TMCP), tempering

中图分类号:

TG142.1

彭宁琦, 何航, 罗登, 范明, 李中平. 高强韧耐候桥梁钢Q500qENH的生产工艺[J]. 金属热处理, 2021, 46(8): 139-143.

Peng Ningqi, He Hang, Luo Deng, Fan Ming, Li Zhongping. Production process of high strength and toughness weather-resistant bridge steel Q500qENH[J]. Heat Treatment of Metals, 2021, 46(8): 139-143.

参考文献

[1]Miki C, Homma K, Tominaga T. High strength and high performance steels and their use in bridge structures[J]. Hournal of Constructional Steel Research, 2002, 58(1): 3-20.
[2]Chen Aihua, Xu Jianqiu, Li Ran, et al. Corrosion resistance of high performance weathering steel for bridge building applications[J]. Journal of Iron and Steel Research International, 2012, 19(6): 59-63.
[3]Urban V, Krivy V, Kreislova K. The development of corrosion processes on weathering steel bridges[J]. Procedia Engineering, 2015, 114: 546-554.
[4]Qin Shunquan, Gao Zongyu. Developments and prospects of long-span high-speed railway bridge technologies in China[J]. Engineering, 2017(6): 23-38.
[5]ASTM A709/A709M-18,Standard specification for structural steel for bridges[S].
[6]JIS G 3114: 2016, Hot-rolled atmospheric corrosion resisting steels for welded structure[S].
[7]Li Dongliang, Fu Guiqin, Zhu Miaoyong, et al. Effect of Ni on the corrosion resistance of bridge steel in a simulated hot and humid coastal-industrial atmosphere[J]. International Journal of Minerals, Metallurgy and Materials, 2018, 25(3): 325-338.
[8]黄维, 张志勤, 高真凤, 等. 国外高性能桥梁用钢的研发[J]. 世界桥梁, 2011(2): 18-21.
[9]张宇, 郑凯锋, 衡俊霖. 免涂装耐候钢桥梁腐蚀设计方法现状及展望[J]. 钢结构, 2018(9): 116-121.
Zhang Yu, Zheng Kaifeng, Heng Junlin. Summary and enlightenment on corrosion design method of uncoated weathering steel bridges[J]. Steel Construction, 2018(9): 116-121.
[10]闫志刚, 赵欣欣, 徐向军. 沪通长江大桥Q500qE钢的适用性研究[J]. 中国铁道科学, 2017, 38(3): 40-46.
Yan Zhigang, Zhao Xinxin, Xu Xiangjun. Study on applicability of Q500qE steel for hutong Yangtze river bridge[J]. China Railway Science, 2017, 38(3): 40-46.
[11]李军平. 免涂装耐候钢在雅鲁藏布江钢管拱桥上的研究应用[J]. 钢结构, 2019, 34(6): 107-111.
[12]Morcillo M, Diaz I, Chico B, et al. Weathering steels: From empirical development to scientific design (A review)[J]. Corrosion Science, 2014, 83(7): 6-31.
[13]Legault R A, Leckie H P. Effect of alloy composition on atmospheric corrosion behavior of steels based on a statistical analysis of the Larrabee-Coburm data set[C]//Corrosion in Natural Environments, ASTM STP 558, American Society for Testing and Materials. West Conshohocken, PA, 1974: 334-347.
[14]雍歧龙. 钢铁材料中的第二相[M]. 北京: 冶金工业出版社, 2006.
[15]余永宁. 金属学原理[M]. 北京: 冶金工业出版社, 2000.

高强韧耐候桥梁钢Q500qENH的生产工艺

Production process of high strength and toughness weather-resistant bridge steel Q500qENH

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	梁恩溥, 徐乐, 杨勇, 王毛球. 添加Al、Cu对40CrNi3MoV钢组织和力学性能的影响[J]. 金属热处理, 2022, 47(4): 17-23.
[2]	王琪, 吴光亮. 回火温度对1100 MPa级高强钢组织与性能的影响[J]. 金属热处理, 2022, 47(4): 146-150.
[3]	黄龙, 邓想涛, 王昭东. 回火温度对颗粒增强型低合金耐磨钢组织和性能的影响[J]. 金属热处理, 2022, 47(3): 1-6.
[4]	吴方俊, 邓小云, 揭晓华, 郑开宏, 骆智超. 热作模具用H13和Dievar钢的热疲劳性能[J]. 金属热处理, 2022, 47(3): 165-172.
[5]	庞庆海, 郎庆斌, 何春静, 王九花, 元亚莎. 5Cr2NiMoVSi模具钢的相变规律与力学性能[J]. 金属热处理, 2022, 47(3): 186-190.
[6]	杨玉川, 李巍, 熊勇. 1Cr17Ni2钢制操纵盒小轴断裂原因分析[J]. 金属热处理, 2022, 47(3): 261-265.
[7]	刘韬, 吴红艳, 高秀华, 秦岽烊, 杜林秀. 临界区回火温度对Fe-4Mn-1.2Cr-0.3Cu-0.6Ni中锰钢微观组织和力学性能的影响[J]. 金属热处理, 2022, 47(2): 91-98.
[8]	胡芳忠, 杨少朋, 金国忠, 胡乃悦, 汪开忠, 杨志强, 陈世杰. 淬火温度对Nb微合金化齿轮钢18CrNiMo7-6组织演变及力学性能的影响[J]. 金属热处理, 2022, 47(2): 105-111.
[9]	俞波, 张宜, 王占业, 柴立涛. 连续退火工艺对4.5%Cr冷轧耐候钢组织性能的影响[J]. 金属热处理, 2022, 47(2): 137-140.
[10]	陈林恒, 汤启波, 武会宾, 赵晋斌, 伯飞虎. 淬火工艺对含Ni中锰钢组织和性能的影响[J]. 金属热处理, 2022, 47(2): 159-163.
[11]	赵欣, 陈正宗, 赵海平. 新型马氏体耐热钢G115大型铸件热处理过程有限元分析[J]. 金属热处理, 2022, 47(2): 229-235.
[12]	戴彦璋, 韩顺, 厉勇, 周敏, 王春旭. 回火温度对新一代传动齿轮钢C61组织及性能的影响[J]. 金属热处理, 2022, 47(1): 49-55.
[13]	陆春祥, 林田子, 曹建春, 高鹏, 詹放, 刘星. 回火时间对高强抗震耐火钢板组织与力学性能的影响[J]. 金属热处理, 2022, 47(1): 156-162.
[14]	朱林, 程向龙, 邹喜洋. 26CrMo4钢的热处理工艺[J]. 金属热处理, 2022, 47(1): 271-275.
[15]	邓彪, 陈蓬, 王国栋. 回火温度对二次硬化马氏体不锈钢组织和性能的影响[J]. 金属热处理, 2021, 46(9): 65-71.