How is PCBA False Welding Produced?
In the PCBA processing process, welding is a very important process. If there is a slight negligence in the operation and the relevant process regulations are not implemented, it will cause poor welding. The more common welding defects are: cold joint, false welding, continuous welding, cold welding, less welding, etc. So what is false welding? Why does false welding occur? False welding means that during the PCBA welding process, although the manual visual inspection has already shown the effect of successful welding, sometimes the leads and solder joints can be separated by gently poking with your fingers. That is, it seems that the welding is successful, but in fact the welding fails. Because the false welding phenomenon is difficult to distinguish with the naked eye, it is generally found during AOI inspection. The main reasons for false welding are welding iron tips, flux, component pins and welding tin qual...