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 ›› 2019, Vol. 40 ›› Issue (5): 71-72.

所属专题： 汽车用微合金钢

• 组织和性能 • 上一篇    

非调质钢50MnSiV新能源汽车电机轴的开发

谭利，吉光，肖波，郑力宁，周湛   

  1. 江苏沙钢集团淮钢特钢股份有限公司，淮安223002
  • 收稿日期:2020-05-07 出版日期:2019-10-01 发布日期:2022-05-13
  • 作者简介:谭利(1986-),男，硕士(2013年昆明理工大学)，主任工程师, 2010年湖南工业大学(本科)毕业，汽车高强韧性非调质钢开发研究。

Development of Non-Quenching and Tempering Steel SOMnSiV for New Energy Automobile Motor Shaft

Tan Li,  Ji Guang, Xiao Bo, Zheng Lining , Zhou Zhan   

  1. Huaigang Special Steel Co Ltd, Jiangsu Shagang Group, Huaizan 223002
  • Received:2020-05-07 Published:2019-10-01 Online:2022-05-13

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摘要： 非调质钢50MnSiV(/%:0. 50C,0.52S,1.20Mn,0.010P,0.025S,0.15Cr,0.10V,0.015Ti,0.015N)制造的新能源汽车电机轴,省去传统调质钢20CrMnTiH渗碳热处理和矫正精整工序,不仅可提高材料95%利用率和2天交货周期,还可以降低25%成本。50MnSiV钢抗拉强度1100 MPa、屈服强度858 MPa、冲击功48J。其静扭扭矩(4697 Nm)、疲劳寿命(±1600 Nm双向扭转12万次、±1400 Nm双向扭转27万次)较渗碳20CrMnTiH钢提高了27%和93%～140%,并且其性能指标和8万公里的路试结果均满足电机轴的技术要求。

关键词: 非调质钢, 50MnSiV, , 20CrMnTiH, 渗碳处理, 电机轴

Abstract: The new energy automobile motor shaft made of non-quenched and tempered steel 50MnSiV (/% ：0.50C, 0.52Si, 1.20Mn, 0.010P, 0.025S, 0.15Cr, 0.10V, 0.015Ti, 0.015N) by eliminating traditional carburizing heat treat¬ment, straightening and finishing process of steel 20CrMnTiH, can not only improve 95% materials utilization rate and 2 delivery days and can also reduce 25% costs. With tensile strength 1100 MPa, yield strength 858 MPa and impact energy 48 J, its static torque (4697 Nm),fatigue life ( ±1600 Nm bidirectional torsion 120 ,000 times, ± 1400 Nm bidirectional torsion 270,000 times) increased by 27% and 93% 〜140% respectively than that of carburized 20CrMnTiH motor shaft, and its performance index and 80,000 km road test results meet motor shaft technical requirements.

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