阴极铜浇铸大型阳极模过程温度场数值模拟
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摘要
采用有限元方法建立了铜阳极模压铸过程温度场的数值模型,模拟分析了铜阳极模不同阶段的温度分布规律。模拟结果表明:在压板冷却过程中,温度的分布很不均匀,阳极模左侧温度最低、下端部位温度较高、上端部位温度最高,阳极模最高温度随着时间的增加快速降低,降幅将近70℃。最低温度随着时间的增加先急剧降低,随后降幅减缓,降幅将近100℃。最大温差随着时间的增加先急剧增加,随后增速减缓,由初始的0℃增加至360 s的约30℃。在空冷过程的初期0~450s,阳极模的温度分布与压板冷却阶段类似;在空冷过程的450~1200 s,阳极模的温度分布情况是:阳极模外轮廓温度较低,外表面相交的部位温降最快,温度最低,温度最高的部位为阳极模的内表面中心区;阳极模最高温度随着时间的增加快速降低,降幅将近168℃。最低温度随着时间的增加急剧降低,降幅将近185℃。最大温差随着时间的增加先降低,随后急剧增加,由初始的28℃增加至1 200 s的约44℃。
The process temperature field numerical modeling of copper anode die-casting is established by finite element method; the temperature distribution rule of copper anode mould in the different stage is simulated and analyzed. The simulation results show: the distribution of temperature is very uneven during the plate cooling process,the left side of anode mould is the lowest,the temperature of lower part is high,and the temperature of the upper side is the highest,the maximum temperature of the anode mould is decreased fast along with the time increasing,the decreasing amplitude is close to 70℃. The minimum temperature is decreased fast along with the time increasing,and then the decreasing amplitude gets slow down,the decreasing amplitude is close to 100℃. The maximum temperature difference is increasing fast along with the time increasing,and then it will slow down,it shall increase from 0℃ in initial time to about 30℃ in 360 s.The temperature distribution of anode die is similar to the temperature of plate cooling stage during the initial 0 ~ 450 s of air cooling process;the temperature distribution situation of anode mould in the 450 ~ 1200 s of air cooling process is: the temperature of outer contour of anode mould is lower,the temperature drop of the intersection of outside surface is the fastest,the temperature is the lowest one,the highest temperature part is the central part of the internal surface of anode mould; the maximum temperature of anode mould shall be decreased fast along with the time increasing,the decreasing amplitude is close to 168℃. The minimum temperature is decreased fast along with the time increasing,and then the decreasing amplitude gets slow down,the decreasing amplitude is close to 185℃. The maximum temperature difference is decreased firstly along with the time increasing,and then it will increase quickly,it shall increase from 28℃ in initial time to about44℃ in 1200 s.
The process temperature field numerical modeling of copper anode die-casting is established by finite element method; the temperature distribution rule of copper anode mould in the different stage is simulated and analyzed. The simulation results show: the distribution of temperature is very uneven during the plate cooling process,the left side of anode mould is the lowest,the temperature of lower part is high,and the temperature of the upper side is the highest,the maximum temperature of the anode mould is decreased fast along with the time increasing,the decreasing amplitude is close to 70℃. The minimum temperature is decreased fast along with the time increasing,and then the decreasing amplitude gets slow down,the decreasing amplitude is close to 100℃. The maximum temperature difference is increasing fast along with the time increasing,and then it will slow down,it shall increase from 0℃ in initial time to about 30℃ in 360 s.The temperature distribution of anode die is similar to the temperature of plate cooling stage during the initial 0 ~ 450 s of air cooling process;the temperature distribution situation of anode mould in the 450 ~ 1200 s of air cooling process is: the temperature of outer contour of anode mould is lower,the temperature drop of the intersection of outside surface is the fastest,the temperature is the lowest one,the highest temperature part is the central part of the internal surface of anode mould; the maximum temperature of anode mould shall be decreased fast along with the time increasing,the decreasing amplitude is close to 168℃. The minimum temperature is decreased fast along with the time increasing,and then the decreasing amplitude gets slow down,the decreasing amplitude is close to 185℃. The maximum temperature difference is decreased firstly along with the time increasing,and then it will increase quickly,it shall increase from 28℃ in initial time to about44℃ in 1200 s.
引文
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[15]柳智,杨文栋.浅谈提高铜阳极板质量的生产实践[J].云南冶金,2013,42(2):85-88.
[2]谢正辉.铜阳极模使用寿命的探讨[J].有色设备,1999(4):10-11.
[3]胥建芳.阳极模的改造[J].有色设备,2001(4):37-38.
[4]赵大军,唐丽,张坤华.纯铜阳极模铸件的裂纹及气孔浅析[J].铸造技术,2009,30(7):963.
[5]赵大军.纯铜浇铸铜阳极模铸件的裂纹及气孔浅析[J].特种铸造及有色合金,2010,30(3):288-289.
[6]黄智超,陈雯,沈强华,等.延长铜阳极板圆盘浇铸机模具的使用寿命[J].中国铸造装备与技术,2014(4):34-37.
[7]朱宏学,施晓峰,黄斌,等.结构改进在提高阳极模品质中的应用[J].中国铸造装备与技术,2015(6):30-32.
[8]李枫,沈强华,马涛,等.影响阳极铜浇铸模使用寿命的因素探讨[J].中国铸造装备与技术,2016(1):5-7.
[9]胡忠卫,管桂生,彭庆超.铜阳极模使用寿命影响因素研究[J].中国金属通报,2016(12):68-70.
[10]金泽志,曾庆康.阳极板浇铸用铜模与钢模选择及优化[J].有色设备,2017(3):47-49.
[11]周建民.影响铜阳极板物理规格的因素及对策探讨[J].有色冶金设计与研究,2013,34(3):25-29.
[12]李科,杜春云,刘国辉.采用铜模浇铸铜阳极板的实践探索[J].有色冶金设计与研究,2017,38(2):15-16.
[13]单永得.五鑫铜业提高铜阳极板质量的生产实践[J].新疆有色金属,2016,39(6):55-57.
[14]袁海滨,陈钢,刘国辉,等.提高铜阳极板浇铸质量的探讨[J].中国有色冶金,2015,44(6):30-32.
[15]柳智,杨文栋.浅谈提高铜阳极板质量的生产实践[J].云南冶金,2013,42(2):85-88.