摘要
以大型复杂ZL205A合金骨架铸件为研制对象,介绍了大骨架铸件的研制过程。由于该铸件为承力件,其结构复杂,轮廓长又扁,非常易变形,而且外形不加工,所以保证骨架铸件冶金质量和尺寸精度难度较大。本研究从骨架铸件铸造工艺设计、型芯材料选择、热处理工艺及尺寸控制等方面进行了分析研究,并在设计铸造工艺时采用铸造数值模拟技术等先进手段,使骨架铸件实现了顺序凝固,获得了冶金质量、力学性能和尺寸精度等均达到或超过设计要求的优质骨架铸件。
Based on large complex ZL205A alloy skeleton castings, the development process of large skeleton casting was introduced. Because casting is a load-bearing part, has complex structure, long and prolate outline, so the casting is very easy to deform. The contour is not machined, so it is difficult to ensure metallurgical quality and size precision of skeleton casting. The casting process design, core materials selection, heat treatment technology and size control of the skeleton casting were analyzed, and numerical simulation was used to design casting process. The sequential solidification was achieved. The metallurgical quality, mechanical properties, and size precision meet the performance requirement of skeleton casting.
出处
《铸造》
CAS
CSCD
北大核心
2014年第4期371-374,共4页
Foundry
关键词
ZL205A铝合金
骨架铸件
工艺设计
低压铸造
数值模拟
ZL205A aluminum alloy
skeleton castings
process design
low pressure casting
numerical simulation
