通过建立二维热-力耦合分析有限元模型,研究了一种新型链式异型坯结晶器内浇钢过程凝固坯壳与结晶器铜板间的热-力学状态.揭示了该结晶器链板和结晶器内铸坯的温度场与应力场.结果表明,铜板热面最高温度出现在弯月面以下150～300 mm,以腹板位置温度为最高,达198.2 ℃;冷面最高温度出现在翼缘中心位置,约为115℃,冷面其他位置温度在100 ℃以下.冷面喷淋状态良好.在10 m/min的拉速下,结晶器弯月面下200 mm处开始生成固相坯壳,结晶器出口处腹板中心位置开始进入两相区.计算结果对该链式异型坯结晶器的设计及其连铸工艺的优化具有一定指导意义.
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