For the surface treatment workshop, the qualified and stable composition of the plating bath is the prerequisite guarantee of the surface treatment quality of the workpiece. The quality of electroplating can be guaranteed by managing the hard chromium bath well. Liquid composition information is the basis of liquid management, which can be used to effectively maintain and adjust the liquid, so that the components of the liquid have been stable and meet the requirements, laying the foundation for the stable surface treatment quality of the workpiece. The information of tank composition is obtained by chemical analysis, which is often called tank analysis.
In the pre-treatment stage of the plating process, conventional pickling processes (hydrochloric acid, etc.) are usually used to remove oxidized layers and rust from the surface of the workpiece. However, this process can lead to hydrogen embrittlement of the plated layer, which significantly affects the mechanical properties and service life of the plated product. Hydrogen embrittlement is a phenomenon in which the ductility and toughness of a material are significantly reduced in the presence of hydrogen, leading to an increase in its brittleness and susceptibility to fracture during use.
In zinc-nickel alloy plating and passivation treatment, yellowing phenomenon often occurs at the corners and holes, which seriously affects the overall aesthetic and protective performance. In this regard, the application of Bigely Zn-323 zinc-nickel alloy trivalent chromium blue zinc passivator effectively solves these problems. Today's article will help you analyze the advantages of Zn-323 and its merits in practical applications.
As we all know, in the production process of plastic plating, the colloidal palladium adsorbed on the surface of the plastic workpiece after palladium activation does not have catalytic activity, which is due to its surroundings are wrapped by divalent tin ions, the use of plastic plating accelerator can dissolve the palladium around the divalent tin so that it is exposed to deal with, so that palladium ions will have catalytic activity. So what do we need to pay attention to when we use the plastic plating accelerator?
Electroplated colored zinc passivation process is vital in the corrosion protection of steel and metal products. The passivation process is mainly divided into two types: trivalent chromium passivation and hexavalent chromium passivation, and each of these two technologies has its own advantages and disadvantages. In this article, a detailed comparison of trivalent chromium and hexavalent chromium passivation will be made in terms of the performance of the passivated film layer, production costs and environmental costs, in order to help plating factories to choose the appropriate passivation process!
Trivalent chromium blue and white passivation liquid is widely used in electroplating industry, mainly for passivation treatment after galvanizing process. Its main function is to improve the corrosion resistance of the coating. However, as time goes by, the passivation solution will gradually age. The causes of aging include the accumulation of organic impurities, the composition of the passivation solution is not uniform, the change of pH value, the solution temperature and metal ion pollution. The change of these factors will directly affect the performance of passivation liquid, and then lead to a series of plating failures.
