Optimization of Cast-Rolling Process of Copper Aluminum Composite Plate and Experimental Analysis
TIAN Hanwei1, WANG Aiqin1, XIE Jingpei2 , CHANG Qinghua1, LIU Shuaiyang1
1 School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023 2 Collaborative Innovation Center of Non-Ferrous Materials of Henan Province, Luoyang 471023
Abstract: Taking the horizontal twin cast-rolling mill as the object of study, based on the Fluent module of ANSYS Workbench platform, using laminar model and model of solidification and melting processing, and the JMatPro software was used to obtain thermal parameters of the 1050Al, finally a two dimensional steady state finite volume model of copper aluminum composite strip cast-rolling process was established. The influence of the billet speed, the pouring temperature of aluminum liquid, the length of cast-rolling zone and the preheating temperature on aluminum liquid-liquid fraction distributions were studied by orthogonal simulation,and the regularities of distributions of temperature field and velocity pathlines were analyzed.The results show that the effect of aluminum liquid solidification by the length of cast-rolling zone and billet running speed is larger, the overall temperature distribution is mainly affected by the preheating temperature of copper strip, and the parameters optimization ranges in orthogonal simulation are as follows: the billet speed is 0.5—1.5 m·min-1, the casting temperature is 963—1 023 K, the length of the rolling zone is 65—80 mm and the copper preheating temperature is 300—673 K, the roll casting experiment was carried out, its process parameters are as follows: the billet speed is 0.5 m·min-1, the casting temperature is 973 K, the length of the rolling zone is 80 mm and the copper preheating temperature is 300 K. Moreover, the experimental results show that the metallurgy bonding state is good, the existence of intermetallic compound Al2Cu is determined by line scanning and energy spectrum analysis.
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2019, Vol. 33 
