The mechanism of ultrasonicseamwelding of copper plates and tubes for collecting solar energy was investigated.
研究了太阳能集热铜片和铜管的超声波缝焊机理。
2
Ultrasonic defect detection inspection shall be carried out for welding seams and defects shall be removed. the excess weld metal of welding seam must be eradicated and abraded after welding.
焊缝须进行超声波探伤检查并清除缺陷，焊后对焊缝余高进行铲除并磨平。
3
A moving utensil for portable ultrasonic probe which is made of chargeable electronic screwdriver is introduced, and it can be used to assist detector to detect steel butt-joint weldingseam.