摘要
针对大规格铝合金厚板的变形问题,建立铝厚板的淬火-拉伸矫直有限元模型;运用建立的模型对厚板的非对称淬火工况进行模拟计算,获得厚板的变形分布;进一步对变形厚板进行拉伸矫直,获得拉伸后厚板的变形分布;结合小规格厚板的淬火-拉伸矫直实验,对厚板不同状态下的板形质量进行评估。研究结果表明:非对称淬火会引起厚板极大变形;拉伸矫直能有效提高厚板的平直度,当拉伸量达2.0%时,厚板的平直度能满足生产要求。
Aiming to solve the deformation problem of large size aluminum alloy thick plate, FEM quenching-tension-straightening model of aluminum thick plate was built, with which asymmetrical quenching of aluminum plate was simulated and deformation distribution of the plate was obtained. Then the deformed plate was straightened, and deformation distribution of the plate after straightening was obtained. With experiments of smaller aluminum plate, plate shape quality of different conditions was evaluated. The results show that the asymmetrical quenching can bring great deformation to aluminum plate, while tension straightening can improve plate flatness effectively. Plate flatness can meet the production requirements at stretching ratio of 2.0%.
出处
《中南大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2013年第12期4827-4832,共6页
Journal of Central South University:Science and Technology
基金
国家重点基础研究发展规划("973"计划)项目(2010CB731703
2012CB619505)
中南大学博士后基金资助项目(2012年)
关键词
淬火
铝合金
平直度
拉伸矫直
quenching
aluminum alloy
flatness
tension straightening