The results show that compared with the traditional process,the graphitizing annealing time of new process is saved about 50%,and the microstructures,with uniform fine grain,a lot of graphite nuclei and free from carbide is obtained.
结果表明,可锻铸铁铸件新的石墨化退火工艺比传统工艺时间缩短约50%,并获得了石墨核心多、晶粒细小均匀以及无碳化物的显微组织,其综合力学性能超过了现行国际标准规定。
The components,modification and graphitizing annealing technology of ductile cast iron as-cast was researched.
对铸态可锻铸铁的材质、孕育处理及石墨化退火工艺进行了研究。
By optimizing casting method,adopting proper gating system and risers,adopting low temperature graphitization annealing process,optimizing chemical composition,and strictly controlling nodularizing and inoculating processes,it is possible to obtain qualified heavy wind turbine generator castings with all properties meeting requirements.
通过优化铸型工艺,采用适当的浇注系统和低温石墨化退火工艺,选择合理的化学成分,控制球化处理与孕育处理,可生产出各项性能指标合格的风电铸件。
