Mr. Lin is the owner of a tin plating factory. Recently, during the process of using acidic tin plating brighteners, there will be a circle of blackening on the surface of the tin coating of the workpiece. What is the reason for this?
Engineers from Bigley rushed to the site and carefully analyzed the concentration and process parameters of various components in the plating solution based on on-site experience and the characteristics of the acidic tin plating brightener Sn-807. It was found that they were all within the normal working range. The engineer also checked the production process of tin plating, and found that Mr. Lin's workpieces in the production line were discharged from the bath too slowly after tin plating, and the time interval between cleaning the workpieces was too long. The bubbles left by the foam adhered to the workpieces would become black circles after drying.
Therefore, the engineer communicated with Mr. Lin that the speed of the workpiece leaving the plating bath should be adjusted to shorten the washing time of the workpiece, so that the foam adhered to the surface of the workpiece will not become bubble after timely cleaning, and the workpiece will not appear black circles. After Mr. Lin's production line was adjusted, the speed of the workpiece coming out of the plating bath has increased, and it has been cleaned in a timely manner. The phenomenon of black circles has also been resolved.
So, when black circles appear on the workpiece during the use of acidic tin plating brightener, we should promptly check the groove speed of the workpiece and clean it in a timely manner. If you are interested in acidic tin plating brighteners, please contact Bigley customer service for free samples and detailed technical information!
If you want to learn more about tin plating, you can click to view the "Common problem".