20mm铜铝管焊接电流的预补偿研究  

Precompensation of 20mm Copper Pipe and Aluminum Pipe Welding Current

作　　者：张希川[1] 左丽娜 刘忠仁[1] 安振之[1] 

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110023 [2]东北制药总厂建筑安装工程公司,沈阳110026

出　　处：《机械设计与制造》2008年第10期134-136,共3页Machinery Design & Manufacture

摘　　要：设计了带有焊接电流预补偿的PLC控制系统。建立了晶闸管导通角和电源电压的数据库。每次焊接前,控制系统要测量电源电压,并在数据库中查询得出合适的导通角,传给晶闸管触发板。对20mm铜铝管焊接试验中的电源电压与焊接电流数据进行了区间估计,结果表明焊接电流的总体均值和总体方差的置信区间分别为(51.1,52.7)和(0.06,0.6),说明焊接电流较稳定,从而可保证了铜铝管焊接质量。A PLC control system with the function of current precompensation was developed,to stabilizing the welding electric current. A database of welding current and power voltage was built in the PLC.Before every welding,power voltage is measured,and the angle of flow for silicon control can be looked up by control system,and then transmitted to the trigger circuit board. And according to the results of the interval estimations for welding current in the 20mm copper-aluminum pipe welding experiments ,the confidence intervals of the population mean and the population variance of current are （51.1,52.7） and （0.06,0.6）. Consequently,welding current can be considered as a stabilization constant,and 20mm copper-aluminum pipe can be welded in well quality.

关 键 词：铜管 铝管 电阻焊 焊接电流 预补偿 

分 类 号：TH16[机械工程—机械制造及自动化] TG438.2[金属学及工艺—焊接]