摘要
健全铸件的获得在很大程度上取决于凝固过程的预测和控制,由于铸件的凝固是在铸型内进行而难以直接观察,所以长期以来主要以经验或实测资料作为依据来控制凝固过程。大型电子计算机技术和各种数值计算法的迅速发展给铸件凝固过程的模拟计算提供了条件。本文在2t空心钢锭凝固过程热模拟实验的同时,进行了数学模拟。计算结果表明,数学模拟数据合理、准确、可靠,能正确反映空心锭的实际凝固过程。在此基础上,本文对空心锭的温度分布、凝固前沿、凝固参数、二次枝晶臂距以及成分偏析也进行了数学模拟,并取得了满意的结果,为空心锭的实际生产打下了基础。
To obtain sound castings depends largely on the prediction and controll of the solidification process. Because it is difficult to directly observe the solidification of castings in the mould, the solidification process has been controlled for a long time chiefly on the basis of the experience and real measurement information. The rapid development of large scale electronic computer technique and different data calculations offers the possibility in mathematical simulation for the solidification process of castings. In this paper, a mathematical simulation and tests simulating the solidification process of two ton hollow ingot were carried cut. The results show that the mathematical modeling is reasonably accurate and reliable and can correctly reflect the reae sclidification process of hollow ingot Therefore, the mathematical model was used here to simulate not only the tempelrature distribution and front line of solidification, but also solidification characteristics, secondary dendrite arm spacing and segregation in hollow ingot The results are satisfactory, which provide the basis for producing hollow ingots in our country.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1990年第S1期69-74,共6页
Journal of Iron and Steel Research
