46MnVS5材料连杆应用研究

为保证46MnVS5胀断连杆材料质量,对其成分及工艺设计进行研究分析。通过合理设计Mn、Si等固溶强化元素及V、Nb、N等沉淀强化元素含量,优化炼钢工艺、提高元素控制稳定性,材料的强度得到稳定提高;通过采用二火轧制及高温扩散加热工艺,材料的成分更趋均匀、性能更趋稳定;锻造过程采用合适的加热温度和合理的冷却速率控制金相组织,材料的强韧性指标得到了进一步提高。本研究所得到的高强度胀断连杆毛坯锻件完全能满足用户的使用要求。

Research on Application of 46MnVS5 in Connecting Rod

The composition and producing process of 46MnVS5 are studied to meet the fracture splitting connecting rod material requirements.The strength of the material has been improved by rationally designing solid solution strengthening elements such as Mn and Si and precipitation strengthening trace elements such as V,Nb,and N,and accurately controlling the smelting process.The composition of the material becomes more uniform and the material performance is more stable through the use of two-fire rolling and high-temperature diffusion heating technology.The obdurability is improved by adopting appropriate heating temperature and cooling rate during forging process,to further increase the material's toughness index.The obtained high-strength fracture-splitting connecting rod rough forgings can fully meet the customer requirements.