Effects of ultrasonic treatment on structure of roll casting aluminum strip

The experiment of ultrasonic treatment of roll casting aluminum strip on plane twin-roll cast-roller with double-heads ultrasonic tools was carried out, and the metallographic structure of the roll casting aluminum strip treated by ultrasonic was studied. The results show that ultrasonic treatment can refine the grain of the roll casting aluminum strips and make the structure of the strips more homogeneous. The effect is the best when the power of ultrasonic is 300 W and the incident angle of the guide rod is 45^＋. The mechanism of acoustic cavitations and acoustic flow on grain refinement was also discussed. The heat effect of intensity ultrasonic was studied. The present problems during ultrasonic roll casting process, such as the imperfect cooling system, the inaccurate calculation of ultrasonic energy, and the shape and position of the guide rod to be improved were pointed out.     

超声波处理对铸轧铝板带组织的影响

采用双头式超声波导入杆在水平式双辊铸轧机进行超声波铝板带的铸轧试验,研究超声波作用下铸轧铝板带的金相组织,结果表明,在铝铸轧过程中施加超声波能够使晶粒细化,组织更加均匀;探讨超声波空化现象及声流作用对铸轧铝板带组织细化作用的机制。指出目前超声波铝铸轧过程中存在的问题。     

ABB喷涂机器人在连铸连轧厂的应用

阐述了ABB公司IRB 6650/3.2-125机器人的工作原理和控制系统,同时介绍了其与西门子S7-300PLC控制系统进行有效连接的方法,及其后共同完成的带卷喷号过程。