In the welding process of automatic dispensing machine, we will encounter problems of poor welding. These problems are manifested in detail as missed welding, virtual welding, continuous welding, non-lubrication of solder joints and so on. Jinan two-component dispensing machine manufacturer reminds us that in view of these welding problems, we should carefully observe and find out the causes of these defects, and then deal with them pertinently.
1. Leakage welding. Leakage welding generally refers to the phenomenon that there is no tin on the pad during the welding process. There are roughly two reasons for this situation in automatic dispensing machine. One is that the soldering head does not touch the solder joint. At this time, we need to adjust the coordinates of the spot so that the soldering head touches the solder joint, so that there will be no leak soldering; the other is that the surface of the soldering pad is oxidized seriously, and the tin is basically not adhered to it.
2. Virtual welding. Virtual welding generally means that the solder joint can be seen in the process of welding, but in practice it is not salvaged or tin penetration is not good. The main reason for this situation is that the retention time of the soldering head on the pad is not good or the temperature is too low. So we only need to extend the residence time of the soldering head or raise the temperature to dispose of it.
3. Continuous welding. Continuous welding usually refers to the phenomenon that several adjacent solder joints or pads of several solder joints are linked together. The reason for this phenomenon is either too much tin feeding or too small gap between the two points. In this case, we should first reduce the amount of tin, and then see if the orientation of the iron head is correct. If not, we should stop adjusting in time.
4. The solder joint is not lubricated and sharp. Unlubricated solder joints and pointed solder joints refer to the phenomenon of poor solder joint ion or burr and pointed solder joints after soldering. This is mainly due to the inadequate activity of tin, which is sometimes due to the inadequate setting of our parameters. Either the residence time is too long and the flux evaporates too fast, which will lead to the phenomenon of tightening during the lifting process of the soldering head. If this assumption can not be dealt with by setting parameters, we should consider the problem of tin wire.
Finally, in the welding process, the reason for these bad solder joints may also be that the soldering head should be replaced instead of being replaced in time. More interesting inion about the two-component glue machine can be found on our website: . Thank you for your support.