铸造技术2012，Vol.33Issue(5)：562-564,3.
型壳参数对定向凝固两相区温度梯度的影响
Effect of Mould Parameters on Interface Temperature Gradient during Directional Solidification Process
摘要
Abstract
Effect of different preheating temperature and thickness of the shell mould on solid-liquid interface temperature gradient have been investigated based on numerical simulation associated with experimental verification. The effect of preheating temperature on solid-liquid interface temperature gradient mainly works during the earlier stage of solidification; effect of mould thickness on solid-liquid interface temperature gradient mainly embodies from the mode of heat losing. The results show that with the addition of the initial temperature of the shell mould from 1 450 X to 1 550 X, the solid-liquid interface temperature gradient increases gradually, and reaches its maximum of 42.1 t/cm; we also investigate the solidification process with different shell mould thicknesses from 4 mm to 8 mm, the solid-liquid interface temperature gradient seems the largest when the thickness is 6 mm, which is 43.8 tycm.关键词
定向凝固/数值模拟/温度梯度/型壳参数Key words
directional solidification/ numerical simulation/ temperature gradient/ shell mould parameters分类
矿业与冶金引用本文复制引用
姜涛,玄伟东,邓康,任忠鸣..型壳参数对定向凝固两相区温度梯度的影响[J].铸造技术,2012,33(5):562-564,3.基金项目
国家重点基础研究项目(2011CB610404) （2011CB610404）
上海市科学技术委员会项目(08DZ1130100) （08DZ1130100）
