摘要
依据金属凝固和收缩过程中铸型对铸件形成机械阻力的机理及三种砂型的实测结果，建立了以加权平均参量为特征量的铸型阻碍应力计算模型．揭示了铸型界面温度升至峰值的过程中，铸型阻碍应力急剧增长；其后随着铸型界面温度的降低，铸型阻碍应力增长速率明显变慢．
Based on the results of experiments and the analysis on the formation process of mold resisting stress during casting solidifying and cooling, a general equation to calculate the mold resisting stress is deduced by weighted average method, in which the solidifying and cooling contraction of the casting and the thermal expansion of the mold are considered. The main conclusion are as follows: 1) with the increase of the mold's interface temperature before reaching the maximum, the mold resisting stress increases rapidly, and then a little increase with the decrease of the temperature. 2) with the enhancing of the elastic modules of the mold, the mold resisting stress increases.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1996年第6期687-691,共5页
Journal of Dalian University of Technology
基金
国家自然科学基金
