摘要
试验了不同Ni质量分数、不同温度热处理工艺的球墨铸铁件的低温冲击性能，得到Ni质量分数为0．5％～0．6％、700℃热处理工艺能够达到超规范要求的耐-40王佳低温冲击材料要求；同时经过调整炉料配比试验了无Ni球墨铸铁的低温性能，获得铸态无镍达到顾客要求且合格率达到80％以上的球墨铸铁材料，为后续的无镍CRH3定子架铸件生产打下了基础。
The low temperature impact propertiy of nodular iron with different Ni content and heat-treatment process were tested. The nodular iron with 0.5%～0.6% Ni content and heat treated at 700 ℃ reached the requirment of -40 ℃ low temperature impacting material.By adjusting the rate of raw materials, the low temperature property of nodule iron without Ni was tested.The green nodule iron without Ni was obtained, met the requires of customer and the yield was more than 80%,which is favorable for next production of no-Ni CRH3 stator frame castings.
出处
《铸造设备与工艺》
2015年第4期40-44,共5页
Foundry Equipment & Technology
关键词
超规范材料
耐-40℃低温冲击
镍
热处理
nodular iron, -40 ℃low temperature impact, nickel, heat treatment
