以下为句子列表：
英文: Abstract: Temperature field of hollow ingot solidification is simulated by FEM.To different mould,effect of heat transfer coefficient between inner sleeve and cooling medium and thickness of core refractory on final position of solidification,the highest
中文: 文摘:对空心钢锭凝固过程的温度场进行了有限元分析，对不同锭型结构的芯部换热系数、耐火材料厚度对最终凝固位置、内筒壁最高温度及缩孔疏松的影响进行了对比，并讨论了耐火材料典型部位的温度随凝固时间的变化。
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英文: The vacuum gas quenching process of ring die of pellet mill is analyzed and discussed based on selection of heat treatment equipment, setting of process parameters, comparison of gas quenching cooling medium and control of deformation amount and others.
中文: 摘要对饲料制粒机环模的真空气淬工艺，从热处理设备的选用、工艺参数的设置、气淬冷却介质的比较及变形量的控制等多个方面进行了分析和讨论。
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