Effect of Rotary Injection on the Melt Density Equivalent of Aluminum Die Casting Alloy ADC12
Author of the article:LIU Wangqiang;MA Hong;ZHOU Rui;YUAN Fangfang;SUN Chunyu;YANG Xinqiang
Author's Workplace：Shaanxi Fast Group Co.,Ltd.,Baoji 722409,China
Key Words：die casting ADC 12 aluminum alloy rotary degassing density equivalent rotor rotation speed nitrogen flow rate
Abstract：The effects of rotor speed,gas flow rate,inert gas type and effective length of baffle immersed in aluminum liquid on the melt density equivalent of ADC12 aluminum alloy in the process of rotating injection degassing were studied.The results show that when the rotor speed is in the range of 0~400 r/min and the gas flow rate is in the range of 0~20 mL/min,with the increase of the rotor speed,the equivalent density of liquid aluminum is smaller and the degasing effect is better.When the rotor speed and gas flow rate are too high,the liquid aluminum rolls and reenrolls,and the degassing effect becomes worse.N2 and Ar have no significant effect on the density equivalent of ADC12 aluminum alloy melt.When the baffle burns more than 1/3 of the total length,the equivalent density of liquid aluminum increases and the degassing effect becomes worse.In this experiment,the optimum process parameters are rotor speed 400-450 r/min and nitrogen flow rate 20-25 mL/min.
