Mr. Shen from Jiangsu Province, is the owner of an electroplating factory engaged in acid galvanizing processing of various hardware parts. Recently, in the production process of using black zinc passivator, Mr. Shen found that the corrosion resistance of the black zinc workpiece after sealing is very poor, the workpiece is basically white rust after 24 hours of salt spray test, and the sealing film is easy to fall off, the customer can not accept such a workpiece. However, Mr. Shen extended the drying time of the workpiece, but there was still no improvement. The above Mr. Shen wants to search the Internet to see how this situation should be solved.
On one day, Mr. Shen saw Bigely trivalent chromium black zinc passivator BZ-217 when searching online, so he understood the performance of this passivator in detail, and consulted the reasons for the poor corrosion resistance of the workpiece and the closure film. After understanding Mr. Shen's production situation in detail, the engineer Bigely found that this phenomenon was mainly due to the film layer not dense enough, large pores, and poor corrosion resistance. He suggested Mr. Shen to use this process of black zinc passivator BZ-217 with sealing agent.
This black zinc passivator BZ-217 is prepared with imported raw materials, can obtain dense black bright passivation film, passivation film has good adhesion, not easy to fade or discolor, and good corrosion resistance, neutral salt spray test white rust time is greater than 72 hours, and sealing agent matching time, better corrosion resistance. So the engineer provided the passivation effect diagram of the workpiece for Mr. Shen's reference, and then Mr. Shen decided to buy a small amount to try.
Under the guidance of the engineer, Mr. Shen used this black zinc passivator BZ-217, and found that the appearance of the passivation is better black and bright, and the corrosion resistance of the workpiece film is greatly improved, and the salt spray test can reach more than 72 hours, and there is no phenomenon of closure film falling off. Now the quality of the workpiece coating has been improved, the failure rate of the workpiece has been reduced, the production efficiency has been greatly improved, and soon Mr. Shen placed an order again, and signed a purchase and sales contract with Bigely.
Therefore, when we find that the corrosion resistance of the black zinc workpiece is poor and the sealing film is easy to fall off in the production process, we should try this black zinc passivator BZ-217 from Bigely to effectively improve the corrosion resistance of the film layer and improve production efficiency. If you are interested in black zinc passivation solution, please contact Bigely customer service for free samples and detailed technical information!
