|
|
|
| Development and application of weathering steel Q345qDNH for bridge of Hangang |
| SUN Yi1, LI Guan-nan1, LIU Bin2, KANG Qing-feng1, LIU Feng-lin1, LI Jing1 |
1. Technical Center,Handan Branch of Hegang Co., Ltd., Handan 056015, Hebei, China;
2. Hanbao Steelmaking Plant,Handan Branch of Hegang Co., Ltd., Handan 056015, Hebei, China |
|
|
|
|
Abstract In order to solve the problem of long-term exposure of bridge steel to sunlight, atmosphere, water and other media and short service life, which can not meet the needs of the development of modern railway transportation, it is urgent to develop and upgrade the weathering steel for bridge. The design of bridge weathering steel Q345qDNH with four components in accordance with the national bridge steel standard GB/T 714—2015 was introduced in detail, and by rolling in laboratory, the corresponding properties and metallography were obtained. And the circumferential immersion test of four experimental steels were carried out to find the corrosion resistance grade of each experimental steel. Through the comprehensive analysis of performance, metallography and corrosion resistance grade of different composition experimental steel, the melting composition of weathering steel Q345qDNH for bridge was determined, and the reasonable rolling and cooling process parameters were formulated through thermal simulation, and the weathering steel Q345qDNH for bridge with excellent performance was successfully developed.
|
|
Received: 10 June 2020
|
|
|
|
| [1] |
李春智,马龙腾,田志红,等. 高性能Q460耐火耐候结构用钢的研发[J]. 中国冶金, 2018, 28(7): 19.
|
| [2] |
梁彩凤,侯文泰.碳钢及低合金钢8年大气暴露腐蚀研究[J].腐蚀科学与防护技术,1995,7(3):179.
|
| [3] |
王博,王德永,刘承军,等. 锰对低碳耐候钢组织与强韧性的影响[J]. 中国冶金, 2007, 17(11): 41.
|
| [4] |
朱立光,王雁,王硕明,等. 微合金元素钒和铌对诱发针状铁素体的影响[J]. 钢铁, 2019, 54(8): 216.
|
| [5] |
王畅,于洋,李文远,等. SPA-H钢高温氧化膜生长机理研究[J]. 轧钢, 2017, 34(5): 6.
|
| [6] |
王军,王超,崔强,等. Q345 NQR2铁路用高强度钢板的开发[J]. 轧钢, 2019, 36(3): 10.
|
| [7] |
邓志银,戈文英,胡博文,等. 合金化对铝镇静钢中夹杂物的影响[J]. 钢铁, 2019, 54(10): 30.
|
| [8] |
卢军辉, 吴战芳, 李忠义, 等. 钙处理对耐候钢低温韧性和耐腐蚀性能的影响[J]. 中国冶金, 2020, 30(1): 44.
|
| [9] |
周素强,成旭东,姜东滨,等. 邯钢中碳微合金钢板坯轻压下位置优化[J]. 中国冶金, 2018, 28(8): 17.
|
| [10] |
柴箫君,李洪波,张杰,等. 热轧轧制压力横向分布规律及预测模型[J]. 钢铁, 2017, 52(6): 52.
|
|
|
|
2021, Vol. 31 
