摘要
采用工程法和近似塑性条件dσr=dσz,并将接触面假设为混合摩擦条件 ,对液相线半连续铸造法获得的70 75铝合金半固态浆料的触变成型力进行了计算。计算结果表明 :在变形的开始阶段 ,成型力为 32kN ;在变形的终了阶段 ,成型力为 6 6 7.0 9kN ,与实测结果 72 1kN基本符合。
Using engineering method, approximate mould condition and taking the surface as blending surface, the thixoforming force of 7075 alloy obtained by liquidus semi continuous casting was calculated. The results show that at the beginning and the ending of the thixoforming, the thixoforming force is 32 and 667.09?kN respectively. The calculated result, 667.9?kN, agrees well with the measured result, 721?kN between them there is a permissible error of 7.4%. [
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第z2期261-264,共4页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目 (5 99740 0 9)
关键词
半固态金属
近似塑性条件
液相线半连续铸造
触变成型力
semi solid metallurgy
approximate mould condition
liquidus semi continuous casting
thixoforming force
