In the medium frequency spot welder welding, some people often mistakenly think that the more solder joints are, the more firm they are. In fact, there are requirements for the spacing of solder joints in real welding. If you do not do as required, it may backfire. The more solder joints are, the less firm they are, and the worse the quality of solder joints will be.
The reason for this problem is the shunt phenomenon of solder joint. The shunt is related to the resistivity and conductive path of the material. In fact, each solder joint is a current path. In general, when the first solder joint is formed, the resistance when the electrode contacts the working part of the nth solder joint is far less than that of the previous solder joint, so the shunt is very small and can be formed very well Of course, if the spacing is too small and the shunt is large enough, the quality of the next solder joint will be far lower than that of the previous solder joint.
Through the above introduction, we can draw the conclusion that when the intermediate frequency spot welding machine works, the distance between the solder joints must be designed reasonably, otherwise the overall welding effect will be affected. Generally, the spacing is about 30-40mm. The specific solder joint distance should be judged according to the specification of the weldment. It is not appropriate to be too dense or too thin.
