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.
Mr. Feng's tin-plated workpieces were always complained by customers that the coating of the workpieces changed color or darkened within 3 minutes of high-temperature soldering, which seriously affected the functional application of the workpieces.In order to retain these customers, Mr. Feng urgently wants to replace a matte tin plating additive that will not change color.
Mr. Zhu is the owner of a home appliance plating factory in Suzhou, Jiangsu Province, with 2 copper plating production lines.Recently, in the process of using acid copper plating brightener, the brightness of the workpiece coating is poor, and the low area is seriously fogged.After the operator treated the plating solution, the brightness of the workpiece coating was still very poor.So Mr. Zhu quickly turned to Bigolly's engineers to help solve the problem.
