摘要：本文建立了上引连铸铜镁合金杆温度场模型，并用ANSYS软件对上引连铸铜镁合金杆的温度场进行了模拟。考察了浇注温度，上引速度以及顶杆温度对铜镁合金杆温度场的影响，并根据热平衡原理对结晶器的热平衡进行了计算。模拟结果表明：在上引速度与顶杆温度相同时，1185℃时的液相穴深度均大于1160℃时的液相穴深度；在相同上引速度与浇注温度下，顶杆温度等于50℃时的液相穴深度最小；在相同顶杆温度与浇注温度下，上引速度等于225mm/min时的液相穴深度最小。最终通过对比得出当t浇=1160℃，t顶=50℃，v=225mm/min时，液相区深度最小，为6.69mm。此时上引连铸铜镁合金杆最不容易产生缩孔。34476
毕业论文关键词：温度场模拟；上引连铸；浇注温度；上引速度
Research on Temperature field simulation of copper magnesium alloy rod in upward continuous casting
Abstract:  A temperature field model of the copper magnesium alloy rod is established in this paper, and the temperature field of the copper magnesium alloy rod is simulated by ANSYS.. The influence of pouring temperature, upward speed and top temperature on the temperature field of copper magnesium alloy rod is investigated, and the thermal equilibrium of the mould is calculated according to the principle of thermal equilibrium.. The simulation results show that the cited in the speed and the top rod at the same temperature, 1185℃ when the liquid phase zone depth were greater than 1160℃ when the depth of liquid hole; in the same on approach speed and pouring temperature, the top rod temperature equal to 50 DEG C when the liquid phase hole depth minimum; under the same roof bar temperature and pouring temperature, drawing speed is equal to the 225mm/min liquid hole depth of minimum. Finally, when t was 1160, 50,v was 225mm/min, the minimum of the liquid phase region was 6.69mm. At this point lead continuous casting copper magnesium alloy rod doesn’t easily produce shrinkage hole.
Key words:Temperature field simulation; Upward continuous casting; Pouring temperature; Casting speed
目录
1.前言    1
1.1上引连铸工作原理及机组产品简介    1
1.2上引连铸影响因素分析    1
1.3对上引连铸生产铜镁合金铸造缺陷分析与控制    1
1.3.1. .镁含量波动控制    3
1.3.2. 合金杆断杆分析及对策    3
1.3.3. 合金杆裂纹分析及对策    4
1.4连铸过程中温度场数值模拟    4
1.4.1导热方程    4
1.4.2初试条件与边界条件    5
1.4.3平面温度场的有限差分求解    6
1.5选题的目的和意义    6
1.6课题的研究内容和目标    7
1.6.1研究内容    7
1.6.2研究目标    7
2.模拟    8
2.1 模拟准备    8
2.2 模拟数据    9
2.2.1初始条件    9
2.2.2边界条件    9
2.2.3铜镁合金凝固过程中焓变的确定    13
2.2.4铜镁合金原始参数    14
2.3模拟步骤    14
2.3.1 模型的建立    15
2.3.2 网格划分    16
2.3.3 添加边界条件    18
2.3.4 瞬态时间步长设置    21
2.3.5 求解结果与显示云图    21
3.数学模拟结果及讨论分析    22
3.1结晶器的热平衡计算    22
3.2模拟结果    23
3.3浇注温度对铜镁合金杆温度场的影响    ….40
3.4铸顶温度对铜镁合金杆温度场的影响    41 ANSYS上引连铸铜镁合金杆温度场模拟研究:http://www.youerw.com/zidonghua/lunwen_31987.html