仿真分析辅助GIS用低压铸造盖板铸件工艺设计  

Process Design of Simulation Analysis Assist Cover Plate Casting for GIS

作　　者：李红强 朱广 李沛根 李文静 阴瑜娟 LI Hongqiang;ZHU Guang;LI Peigen;LI Wenjing;YIN Yujuan(Xi'an XIKAI Precision Foundry Co.,Ltd.,Xi'an 712046)

机构地区：[1]西安西开精密铸造有限责任公司,西安712046

出　　处：《特种铸造及有色合金》2025年第1期136-140,共5页Special Casting & Nonferrous Alloys

摘　　要：针对一种GIS用铝合金盖板原金属型低压铸造工艺出品率低的问题,对盖板铸件初步设计了取消冒口的金属型低压铸造工艺,并采用AnyCasting软件进行模拟仿真以辅助优化工艺设计。结果表明,初步设计的工艺充型过程良好,凝固过程中法兰与4处凸台以及壁相交位置存在孤立液相区,导致缩孔、缩松缺陷;优化方案1采用风冷镶块铸出通孔与密封槽,并减少注胶槽位置加工余量。铸件凝固后,原先的缺陷减小,但法兰与壁相交位置缺陷明显增多。优化方案2采用风冷铜质镶块,将Al液浇注温度进一步提高至720℃后,盖板铸件缺陷消除。Aiming at the low process yield of original metal mold low pressure casting process of the aluminum alloy cover plate for GIS,the initial design of metal mold low pressure casting process without risers was carried out.With the help of AnyCasting software,simulation analysis and process design optimization were conducted.The simulation results indicate that the filling process of initial process is fine and there are isolated liquid phase zones at the intersec⁃tion of flange and four bosses or wall during the solidification process,leading to shrinkage and porosity defects.Air-cooled insert was adopted to cast through holes and sealing groove in optimization scheme 1,reducing the processing rate at the injection groove position.After the casting solidification,the size of defects is reduced,while the quantity of defects at the intersection of the flange and wall is significantly increased.Air-cooled copper insert was adopted in opti⁃mization scheme 2 to enhance pouring temperature of aluminum liquid to 720℃,and defects in the cover plate casting can be eliminated.

关 键 词：GIS 盖板 AnyCasting软件 充型凝固仿真 工艺设计 

分 类 号：TG249.2[金属学及工艺—铸造] TP311[自动化与计算机技术—计算机软件与理论]