![免涂装桥梁结构用耐工业大气腐蚀高强螺栓钢及制造方法](/CN/2017/1/75/images/201710375670.jpg)
基本信息:
- 专利标题: 免涂装桥梁结构用耐工业大气腐蚀高强螺栓钢及制造方法
- 专利标题(英):Industrial atmospheric corrosion resistant and high strength bolt steel for non-spraying bridge structure and manufacturing method of industrial atmospheric corrosion resistant and high strength bolt steel
- 申请号:CN201710375670.5 申请日:2017-05-24
- 公开(公告)号:CN107177803A 公开(公告)日:2017-09-19
- 发明人: 罗志俊 , 王晓晨 , 孙齐松 , 李舒笳 , 马跃 , 徐士新 , 吕迺冰 , 晁月林 , 王猛 , 陈涛 , 王勇
- 申请人: 首钢总公司
- 申请人地址: 北京市石景山区石景山路68号
- 专利权人: 首钢总公司
- 当前专利权人: 首钢集团有限公司
- 当前专利权人地址: 北京市石景山区石景山路68号
- 代理机构: 北京华谊知识产权代理有限公司
- 代理人: 刘月娥
- 主分类号: C22C38/58
- IPC分类号: C22C38/58 ; C22C38/04 ; C22C38/02 ; C22C38/54 ; C22C38/50 ; C22C38/46 ; C22C38/42 ; C22C38/06 ; C21D9/00 ; C21D1/18
The invention provides industrial atmospheric corrosion resistant and high strength bolt steel for a non-spraying bridge structure and a manufacturing method of the industrial atmospheric corrosion resistant and high strength bolt steel, and belongs to the technical field of high strength bolt steel for the bridge structure. The industrial atmospheric corrosion resistant and high strength bolt steel for the non-spraying bridge structure comprises, by weight, 0.16-0.45% of C, 0.01-2.2% of Si, 0.3-2.2% of Mn, 0.001-0.024% of P, 0.002-0.025% of S, 0.0005-0.0100% of B, 0.04-0.50% of Ti, 0.01-0.20% of V, 0.001-0.10% of Al, 0.001-0.34% of Cr, 0.2-0.5% of Cu, 0.2-1.5% of Ni and the balance Fe and trace of impurities. According to the high strength and weather resistant bolt steel, the corrosion resistance index I worked out according to the chemical composition prediction formula is larger than or equal to 6.3, the bolt steel is suitable for producing bolts with the specification range M of 16-30 mm, after the bolt steel is made into bolts in a bolt machining plant, the quenching-and-tempering heat treatment process system is combination of oil quenching of 840-920 DEG C and tempering of 380-625 DEG C, and the optimal strength and toughness match is obtained. The industrial atmospheric corrosion resistant and high strength bolt steel for the non-spraying bridge structure and the manufacturing method of the industrial atmospheric corrosion resistant and high strength bolt steel have the advantages that the bolt steel is applicable to matched connection of plates and profiles of the non-spraying bridge structure and has excellent industrial atmospheric corrosion resistance and low temperature resistance.
公开/授权文献:
- CN107177803B 免涂装桥梁结构用耐工业大气腐蚀高强螺栓钢及制造方法 公开/授权日:2019-01-18
IPC结构图谱:
C | 化学;冶金 |
--C22 | 冶金(铁的冶金入C21);黑色或有色金属合金;合金或有色金属的处理 |
----C22C | 合金 |
------C22C38/00 | 铁基合金,例如合金钢 |
--------C22C38/18 | .含铬的 |
----------C22C38/40 | ..含镍的 |
------------C22C38/58 | ...含大于1.5(重量)的锰 |