Al-Si合金大型薄壁铸件抗变形工艺研究
Research on Deformation Resistance Process of Al-Si Alloy Large Thin Wall Castings
路声宇 1刘怡乐 1蒋新安 1付英杰 1石文泰1
作者信息
- 1. 贵州航天风华精密设备有限公司,贵州 贵阳 550000
- 折叠
摘要
使用Novacast软件模拟了铸件充型和凝固过程,采用3DP砂型打印机生产砂芯,在差压设备炉中进行熔炼浇注.由于舱体内部无凸台及环筋,在铸造及热处理过程中容易发生热变形,针对该问题修改工艺方案,在舱体外表面增加防变形环,防止铸件整体发生扭曲,对铸件增加防变形环状态进行模拟仿真,确保铸件内部质量符合要求,增加防变形工装后,内腔尺寸变形量控制在±0.5 mm,铸件尺寸得到保证,解决了该大型薄壁铝硅合金铸件铸造及热处理变形问题.
Abstract
The filling and solidification processes of castings were simulated using Novacast software,and the sand cores were produced using a 3DP sand mold printer and melted and poured in a differential pressure equipment furnace.Due to the lack of protrusions and ring ribs inside the cabin,thermal deformation is prone to occur during casting and heat treatment.To address this issue,the process plan has been modified by adding anti deformation rings on the outer surface of the cabin to prevent overall distortion of the casting.The state of adding anti deformation rings to the casting has been simulated to ensure that the internal quality of the casting meets the requirements.After adding anti deformation fixtures,the deformation of the inner cavity size is controlled within±0.5 mm,ensuring that the casting size is guaranteed and solving the deformation problem of the large thin-walled aluminum silicon alloy casting during casting and heat treatment.
关键词
Al-Si合金/薄壁壳体铸件/变形控制/模拟仿真/差压铸造Key words
Al-Si alloy/thin walled shell castings/deformation control/simulation/differential pressure casting引用本文复制引用
出版年
2024
NETL
NSTL
万方数据