摘要
为提高球铁曲轴材料的综合性能,试验了下列措施:①采用感应炉熔炼,净化铁液;②选用合理的化学成分,加入适量的Cu、Mo合金元素;③选用低稀土球化剂FeSiMg8RE3;④采用盖包球化处理法和复合孕育处理;⑤采用部分奥氏体化正火处理。结果是25 mm厚Y试块的σb达到836.6～844.6 MPa,δ达到5.2%～7.4%。
With the purpose to increase comprehensively properties of nodular iron for making crankshafts, the following measures were tried： a） melting in induction furnace; b） adopting proper chemical composition, and adding proper amount of Cu and Mo as alloying elements; c） adopting low rare earth content nodularizing alloy FeSiMg8RE3; d） adopting Tundish ladle nodularizing process and compound inoculation; e） adopting normalizing treatment with incomplete austenizing heating. As a result, the comprehensive mechanical properties of 25 mm Y-block reached： σb 836.6～844.6 MPa,δ 5.2%～7.4%.
出处
《现代铸铁》
CAS
2005年第5期56-57,共2页
Modern Cast Iron
关键词
球铁
综合性能
部分奥氏体化
nodular iron
comprehensive properties
incomplete austenizing heating
