Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第27卷    第3期    总第216期    2017年3月

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文章编号:1004-0609(2017)-03-0514-11
大断面铜包铝棒坯立式连铸成形工艺参数对连铸复合过程影响的数值模拟
刘新华,付新彤,付华栋,谢建新

(北京科技大学 材料先进制备技术教育部重点实验室 新材料技术研究院,北京 100083)

摘 要: 以100 mm×100 mm大断面铜包铝棒坯为对象,建立棒坯连铸复合成形的数值模型,确定模型的边界条件,并通过设计的实验验证数值模型边界条件的准确性。基于验证的边界条件,采用ProCast软件对铜包铝棒坯立式连铸复合成形过程的稳态温度场进行数值模拟,得到了各工艺参数对连铸过程的影响规律,给出了工艺参数的调控策略和合理范围。结果表明,制备100 mm×100 mm大断面铜包铝铸坯的合理工艺参数范围为:在保持铜液温度1250 ℃的条件下,铝液铸造温度为760~790 ℃;一冷水流量为1600~2000 L/h;二冷水流量为900~1100 L/h;二冷水距结晶器石墨套出口距离为20 mm;拉坯速度为80~100 mm/min。

 

关键字: 铜包铝;立式连铸复合成形;温度场;数值模拟

Numerical simulation analysis of effects of processing parameters on forming process of vertical continuous core-filling casting for copper clad aluminum billets with large section
LIU Xin-hua, FU Xin-tong, FU Hua-dong, XIE Jian-xin

Key Laboratory for Advanced Materials Processing, Ministry of Education, Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China

Abstract:Taking the copper clad aluminum composite billet with a large section size of 100 mm×100 mm as an object, a numerical simulation of continuous core-filling casting was established. The boundary conditions of the numerical model were determined, and its accuracy was verified by convenient experiment. Based on the verified boundary conditions, the steady-state temperature field of large section copper clad aluminum during the casting was numerically simulated by ProCast software. The effect of each processing parameter on the casting processing is obtained and the controlling method and proper range of the processing parameters are given. The results show that the reasonable processing parameters in preparing copper clad aluminum in 100 mm×100 mm cross section are as follows: under the condition of the casting temperature of copper of 1250 ℃, the casting temperature of aluminum is 760-790 ℃, the flux of the first cooling water is 1600-2000 L/h, the flux of the second cooling water is 900-1100 L/h, the distance from the second cooling water to the exit of graphite crystallizer is 20 mm, and the withdrawing speed is 80-100 mm/min.

 

Key words: copper clad aluminum; vertical continuous core-filling continuous casting; temperature field; numerical simulation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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