Z字形厚大断面球墨铸铁平台的生产实践

Production Practice of Z Shape Heavy Section Ductile Iron Platform

重100 t、最大壁厚>165 mm的Z字形球墨铸铁平台结构复杂、技术指标要求高,铸造难度大。通过合理设计铸件生产工艺,利用模拟软件进行铸造工艺模拟,合理使用冷铁和保温冒口,选用优质原辅材料、喂线法球化处理和适度强化孕育处理,获得了质量合格的Z字形球墨铸铁平台铸件。铸件检测结果表明:各项力学性能均达到了QT400-18AR材料标准要求,铸件质量满足无损检测技术要求。

Z shape ductile iron platform weights 100 t with a maximum wall thickness more than 165 mm. Due to its complex structure, heavy section and high technical requirements, it was very difficult to produce the casting. Through designing the casting process with the help of the ProCAST simulation software, and using reasonably chill and insulating riser, adopting high quality raw materials, wire feeding nodulizing and multiple inoculation treatment, the Z shape ductile iron platform casting was produced successfully. The results of casting inspection show that all mechanical properties meet the requirements of QT400-18 AR nodular iron, and the non-destructive testing results is fully in conformity with the quality requirements of the castings..