Mr. Zhang is the owner of a home electroplating factory in Taizhou, Jiangsu. Their company mainly produces and processes galvanized hardware accessories. However, his production line has always had a problem with using trivalent chromium blue zinc passivation agent for galvanizing, which is that the hole positions of the workpieces are prone to whitening and fogging, and the corrosion resistance of the produced workpieces is relatively poor.
One day, Mr. Zhang came across a trivalent chromium blue zinc passivator BZ-212 from Bigley Technology while searching online, and called Bigley's engineers to learn in detail about the characteristics and operating parameters of this blue passivator. The engineer provided several customer production renderings for Mr. Zhang's reference. After confirming the product appearance and quotation, Mr. Zhang decided to purchase a small sample for testing first.
Mr. Zhang tested this blue passivator under the guidance of engineer Bigley. A week later, Mr. Zhang replied to the message saying that this blue passivator was much better than the one he had used before. After passivating the workpiece, a uniform blue film appeared, and the operating range was wide. The pH value was between 2.0 and 2.8, and the idle time was 30 seconds. The passivation film still showed a uniform blue color without color difference or yellowing. The passivator he previously used needs to control the pH value between 2.5 and 2.8, which is difficult to operate and prone to whitening and fogging. So Mr. Zhang directly placed an order to purchase 20 barrels of galvanized trivalent chromium blue zinc passivator BZ-212.
Now Mr. Zhang's production line is very stable, and the appearance of the produced workpieces is uniform, without any whitening or fogging. Moreover, the corrosion resistance of the workpieces is also very good, which can meet the needs of customers and pass the neutral salt spray test for 72 hours.
So, when we use trivalent chromium blue zinc passivation agent for galvanizing, if the passivation film is prone to whitening and fogging, why not try Bigley's trivalent chromium blue passivation agent BZ-212. If you are also looking for such a trivalent chromium blue zinc passivator, please contact Bigley customer service for free samples and detailed technical information!
