摘要
开发试验的510CL钢(/%:0. 08C,0. 07Si, 1. 25Mn,0. 008P,0. 005S,0. 023Nb,0.018Ti)经半钢脱硫-200 t顶底复吹转炉-LF-230 mm×1 650 mm板坯连铸-连轧成5. 0 mm板。为了保证车轮钢具有良好的焊接性能,采用了低碳Nb-Ti微合金化,并结合TMCP(热机械控制轧制工艺)技术开发出500 MPa高强度车轮钢。试验钢的扩孔率超过100%和焊接性能良好,其冷成形性能和疲劳寿命均达到用户的技术指标,使用后试验钢达到设计要求。
The 5.0 mm strip of developed tested steel 510CL （/% ： 0.08C, 0. 07Si, 1.25Mn, 0. 008P, 0. 005S, 0. 023Nb, 0. 018Ti） is produced by semi-steel desulphurization- 200 t top and bottom combined blowing eonverter-LF-230 mm × 1 650 mm slab casting-continuous rolling process. In order to ensure the better welding performance of wheel steel, the 500 MPa high strength wheel steel is developed by low carbon Nb-Ti microalloying combined TMCP （Thermo-Mechanical Control Process） technology. The hole-expansion rate of tested steel is more than 100%, the welding performance is better, the cold-forming performance and the fatigue life of steel all meet the user technical index, and after application the test steel is up to design requirement.
作者
肖尧
Xiao Yao(Institute of Vanadium and Titanium Steel,Pangang Group Research Institute Co Ltd,Panzhihua 617000)
出处
《特殊钢》
北大核心
2018年第6期62-65,共4页
Special Steel
关键词
500
MPa车轮钢
疲劳寿命
扩孔性能应用
500 MPa Steel for Auto Wheel
Fatigue Life
Hole-Expansion Performance
