(東北大學(xué) 材料與冶金學(xué)院， 沈陽(yáng) 110006)
摘 要: 利用有限元法研究了連續(xù)鑄擠工藝中液態(tài)金屬的動(dòng)態(tài)凝固過程。數(shù)值計(jì)算和實(shí)測(cè)結(jié)果表明，摩擦熱和變形熱對(duì)鋁材連續(xù)鑄擠凝固區(qū)的溫度場(chǎng)有較大影響，采用等價(jià)比熱法處理凝固潛熱問題是切實(shí)可行的。通過速度場(chǎng)與溫度場(chǎng)的耦合計(jì)算，得到了凝固區(qū)的溫度場(chǎng)分布情況。
關(guān)鍵字: 連續(xù)鑄擠； 凝固； 有限元法
aluminum product through CASTEX technique
（College of Materials and Metallurgy, Northeastern University,
Shenyang 110006, P.R.China）
Abstract:The solidification process of liquid metal in the CASTEX technique was studied by FEM(finite element method). The calculated and experimental results show that friction heat and deformation heat have great influence on the distribution of temperature and it is feasible to handle the latent heat of solidification process by equivalent specific heat method. The distribution of the temperature field in solidification zone was gained by coupling calculating of velocity field and temperature field.
Key words: CASTEX; solidification; finite element method
