等离子弧焊离子气流量控制器  

A CONTROLLING DEVICE FOR GAS FLOW RATE OF PLASMA ARC WELDING PROCESS

作　　者：郑兵[1] 王其隆[1] 刘东[1] 武志胜 

机构地区：[1]哈尔滨工业大学 [2]哈尔滨制氧机厂

出　　处：《焊接》1994年第4期18-20,共3页Welding & Joining

摘　　要：设置在气路中的气体压差传感器检测离子气流量,输出电压信号,经放大调制后与设定电压进行比较,经压频转换作为步进电机的控制信号来调节气阀的开度,以实现离子气流量按设定规律变化或保持恒值的闭环控制.A differential pressure sensor is set at gas circuit to inspect gas flow rate and output electric signal which is compared with preset value to give the controlling source for stepmotor. The gas valve is adjusted by the motor to keep the flow rate according to predetermined pattern. By this principle, a close loop controlling device has been developed.

关 键 词：流量控制 等离子弧焊 

分 类 号：TG456.2[金属学及工艺—焊接]