At present, due to the rapid growth of the automobile industry, higher and higher requirements are put forward for the performance of automobiles, so the welding of high-strength nuts is also used more and more in automobiles. Resistance welding high-strength nuts is prone to welding spatter sticking to the thread Above, the bolts are not easy to pass through, which has a great impact on the bolt locking work of the next process. At present, through field verification, there is a blow nut electrode that can improve this problem.
The working principle of this kind of nut electrode is that compressed air passes through the inner cavity of the nut electrode, because the nut electrode and the bottom of the positioning pin are tapered, and when there is no external force acting on the positioning pin, the compressed air is sealed in the electrode. When the positioning pin is pressed down with force, compressed air is ejected from the positioning hole. In this way, the welding metal oxide will be taken away by the compressed air, so the situation that the metal oxide sticks to the nut can be reduced.
Due to the willingness of some positioning pins or electrode structures, it is also possible to add a blowing solenoid valve on the welding equipment. When the welding discharges, the solenoid valve opens and the compressed air enters the electrode. This can also effectively avoid the waste of compressed air resources and the use of compressed air without welding. When the nut is blown away.
Post time: Mar-17-2023