Before, Mr. Deng's workpieces were prone to yellowing and discoloration after high-temperature nickel plating.As this will seriously affect the weldability of the tin coating on the workpiece, Mr. Deng wants to find a high-temperature nickel plating additive with good performance.
In the past month, the coating of terminal pieces produced by Mr. Duan has always been foggy after bright tin plating, and the inspection and treatment of the plating solution have not solved the problem.So Mr. Duan wanted to find a kind of methylsulfonic acid tinning brightener with good performance and not easy to fog.
Recently, the black passivation coating of galvanized workpieces produced by Mr. Zhang always has flow marks, and the appearance is not very uniform, which can not meet the requirements of Foxconn.In order to keep the order, Mr. Zhang wants to quickly replace a trivalent chromium black zinc passivation solution that will not have flow marks.
In the hanging galvanizing process, when trivalent chrome blue zinc passivator is used for production, sometimes there will be color difference in the passivation film of the upper and lower rows of workpieces. What should we do?
In the past more than a month, the matte tinned workpiece produced by Mr. Yang has been subjected to a 250 ℃ wave soldering heat test, and the tin coating has appeared dark and bulging tin accumulation phenomenon,However, the additive supplier has not been able to solve this problem,So Mr. Yang wants to replace a matte tin plating additive that will not have tin accumulation.
The electroless nickel plating solution we use is slow to plating on the workpiece, and the salt spray resistance of the coating is poor, which can only reach 72 hours, so the workpiece is always complained by customers.You can try this electroless nickel plating solution with fast plating and good salt spray resistance.