旋转喷吹对压铸铝合金(ADC12)熔体密度当量的影响  

Effect of Rotary Injection on the Melt Density Equivalent of Aluminum Die Casting Alloy ADC12

作　　者：刘王强 马洪 周瑞 袁放放 孙春雨 杨新强 LIU Wangqiang;MA Hong;ZHOU Rui;YUAN Fangfang;SUN Chunyu;YANG Xinqiang(Shaanxi Fast Group Co.,Ltd.,Baoji 722409,China)

机构地区：[1]陕西法士特齿轮有限责任公司,陕西宝鸡722409

出　　处：《铸造技术》2021年第9期774-776,779,共4页Foundry Technology

摘　　要：研究了旋转喷吹除气工艺中转子转速、气体流量、惰性气体种类和挡板浸入铝液的有效长度对ADC12铝合金熔体密度当量的影响。结果表明,转子转速在0~400 r/min和气体流量在0~20 mL/min时,随着其数值增大,铝液的密度当量越小,除气效果越好;当转子转速和气体流量超高时,造成铝液翻滚重新卷气,除气效果变差。N_(2)和Ar对ADC12铝合金熔体的密度当量无明显影响;挡板烧损超过总长的1/3时,铝液的密度当量增大,除气效果变差。在本实验中,转子转速400~450r/min,氮气流量20~25 mL/min为最佳工艺参数。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.N_(2) 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.

关 键 词：压铸 ADC12铝合金 旋转喷吹 密度当量 转子转速 氮气流量 

分 类 号：TG243[金属学及工艺—铸造] TG146.2[一般工业技术—材料科学与工程]