超声-TIG复合焊接装置的研制与应用

不锈钢中厚板材TIG焊接时,存在焊接熔深浅,单道难以实现全熔透的问题.针对这一问题,研制了一套超声-TIG复合焊接装置,以实现借助高密度超声能量增加焊接熔深和提高焊接效率.该装置通过控制电路输入电压调节超声频率,并以主电路来控制超声输出功率.超声输出功率在0～1000W之间可连续调节.应用所研制的复合焊接装置,采用平板堆焊方法,对5mm厚度304不锈钢板进行了熔深对比试验,发现高能量密度超声可以起到增加焊接熔深的作用;并且和现有增加焊接熔深方法相比,试验过程简单,控制方便,满足设计和使用要求.

Investigation and application of ultrasonic-TIG hybrid welding equipment

The limitations of the TIG welding include low productivity due to low deposition rates,shallow penetration,and inconsistent penetration in the stainless steel plate with 5 mm thickness.An ultrasonic assisted TIG welding equipment with the assistance of high-intensity ultrasonic was researched and developed to increase the welding penetration and improve the welding efficiency.The frequency and the output power of the ultrasonic are respectively adjusted by the input voltages of the control circuit and the main circuit.The output power of the ultrasonic vibration can be continuously adjusted from 0 W to 1 000W.Experimental results show that the high-intensity ultrasonic has the effect of increasing the weld penetration.Also,the process is simple and easy-controlled compared with other welding methods for increasing penetration.The ultrasonic assisted TIG welding equipment can satisfy the requirements of the design and application.