In the production process of using matte tin additives, sometimes the welding force of the workpiece coating is relatively poor, which will affect the quality of the workpiece. What is the reason?
Bigolly Technology made an analysis based on the field experience and the characteristics of the product's matte tin additives Sn-808, there are four main reasons:
1. The surface of the coating is contaminated or not cleaned.The workpiece should be fully washed or the cleaning water should be replaced in time to ensure that the workpiece is clean after tin plating.
2. The plating solution is contaminated by metal impurities.If the metal impurity content in the plating solution is too high, too many impurities will be included in the plating layer, resulting in poor solderability of the plating layer.
3. The thickness of the tin plating layer is too thin.If the coating is too thin, the solderability of the coating will be affected, and the plating time should be appropriately extended or the current density should be increased to ensure that the coating reaches an appropriate thickness.
4. The quality of the tin anode used is too poor.Poor quality anode plates contain more metal impurities, which will be brought into the plating solution during use, thereby affecting the weldability of the plating layer.The tin anode should be a high-purity tin anode of more than 99.9%, which will not bring in impurities and is not easy to passivate.
Therefore, we need to pay attention to the above four points in the production process of using matte tin additives to avoid the deterioration of the welding performance of the workpiece coating and reduce the occurrence of failures.If you are interested in matte tin additives, please contact Bigolly customer service, you can get free samples and detailed technical information!
If you want to know more about tinned, you can check "common problem".