ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2012, Vol. 33 ›› Issue (6): 22-24.

• 工艺技术 • 上一篇    下一篇

大轴重铁路货车车轴用新型LZ45CrV钢坯的开发

周立新,李德胜,雷应华,刘光辉,洪小玲,李秋志   

  1. 大冶特殊钢股份有限公司技术中心,黄石435001
  • 收稿日期:2012-06-04 出版日期:2012-12-01 发布日期:2022-09-28
  • 作者简介:周立新(1968-),男,硕士,高级工程师,副总工程师,《特殊 钢》编委,北京科技大学毕业,特殊钢新产品开发和工艺研究。

Development of New LZ45CrV Steel Bloom for Heavy Load Railway Freight Train Axle

Zhou Lixin, Li Desheng, Lei Yinghua, Liu Guanghui, Hong Xiaoling, Li Qiuzhi   

  1. Technical Center, Daye Special Steel Corp Ltd, Huangshi 435001
  • Received:2012-06-04 Published:2012-12-01 Online:2022-09-28

摘要: 大冶特钢采用60tUHP EBT EAF-LF-VD-6.5t铸锭-850初轧开坯的工艺流程试制了大轴重车轴用260mm×260mm和280mm×280mm新型LZ45CrV钢坯(/%:0.43C、0.27Si、0.77Mn、0.007P、0.005S、0.55Cr、0.10V、0.10Mo)。通过电弧炉配加45%铁水和优质废钢,控制终点[C]≥0.15%,[P]≤0.005%,LF喂铝线,使Al控制在0.035%~0.045%,VD真空处理≥20min等工艺措施,LZ45CrV钢坯的氧含量为8.5×10-6,非金属夹杂物≤1.0级,晶粒度7~8级,力学性能符合标准和设计要求。

关键词: 大轴重车轴用LZ45CrV钢坯, 60 t EBT EAF-LF-VD-6. 5 t铸锭流程, 洁净度, 研制

Abstract: New LZ45CrV steel blooms (/% : 0. 43C, 0. 27Si, 0. 77Mn, 0. 007P, 0. 005S, 0. 55Cr, 0. 10V, 0. 10Mo) of 260 mm x260 mm and 280 mm x280 mm for heavy load railway axle at daye special steel are pilot-produced by the flow sheet 60 t UHP EBT EAF-LF-VD-6. 5 t ingot-850 primary mill rolling process. With process measures including EAF charging 45% hot metal and quality scrap, controlling end [ C]≥0. 15% and [ P] ≤0.005% , feeding aluminium wire in LF refining to control 0. 035% ~0. 045% Al and VD vacuum treatment m20 min, the oxygen content in LZ45CrV steel bloom is 8. 5 x 10-6 , rating of nonmetallic inclusions ≤1.0, rating of grain size 7 ~ 8, and the mechanical properties of steel bloom meet the requirement of standard and design.

Key words: LZ45CrV Steel Bloom for Heavy Load Railway Axle, 60 t EBT EAF-LF-VD-6. 5 t Ingot Flow Sheet, Cleanliness, Development