汽轮机高压内缸铸造工艺优化设计和关键工艺控制  

Casting Process Optimization Design and Key Techniques Control of Steam Turbine HP Inner Cylinder

作　　者：杨建 曹峤 宋帮鹍 刘超 夏鹏飞 朱玮 YANG Jian;CAO Qiao;SONG Bang-kun;LIU Chao;XIA Peng-fei;ZHU Wei(Jiangsu Wanheng Casting Industry Co.,Ltd.,Yancheng 224500,Jiangsu,China)

机构地区：[1]江苏万恒铸业有限公司,江苏盐城224500

出　　处：《铸造》2023年第10期1345-1349,共5页Foundry

摘　　要：超超临界高压内缸是整个汽轮机的核心部件,采用ZG13Cr9MoVNbN合金铸造成形,存在气道机械粘砂倾向大等工艺难点。运用MAGMASOFT软件对内缸铸件进行充型凝固过程数值模拟,并运用软件的DOE工具分析预测不同铸造方案的工艺结果,结合实际生产需求,最终确定优化的铸造工艺。生产验证结果表明,按照优化后的铸造工艺成形的内缸产品内外质量满足客户技术要求。The ultra-supercritical high-pressure(HP)inner cylinder is a core part of the whole steam turbine,which is cast from ZG13Cr9MoVNbN alloy,and existing some technical difficulties such as the tendency of metal penetration in the steam channel.MAGMASOFT software is used to numerically simulate the mold flling and solidification processes of the inner cylinder casting,and its DOE tool is applied to analyze and predict the results brought about by different casting process designs.Finally,an optimized casting process is determined combining with actual production requirements.The production verification results show that the internal and external quality of the inner cylinder cast with the optimized casting process design meets the customer's technical requirements.

关 键 词：汽轮机 高压内缸 ZG13Cr9MoVNbN 铸造工艺 数值模拟 DOE 

分 类 号：TG249[金属学及工艺—铸造]