During aluminum machining, the surface of aluminum alloy parts is often contaminated with various oils, residual polishing paste, hand prints, oil seals, surface waxes and other contaminants. In order to ensure the quality of subsequent plating or oxidation treatment, the degreasing of the aluminum surface is crucial. However, aluminum has poor chemical stability and is prone to corrosion in alkaline or acidic environments. How to avoid corrosion of the substrate while removing oil has become a major challenge in the development of aluminum degreasing powders.
Zincate zinc plating is a zinc plating process using zinc oxide as the main salt and sodium hydroxide as the complexing agent, and the process requires a zincate zinc plating brightener to obtain a zinc plating layer with detailed crystallization and high brightness over a wide working range.
There is such a trivalent chrome blue zinc passivator, it can pass the customer's high salt spray test requirements, can improve the efficiency of the passivation, but also can reduce the cost of the process, do you know what passivator?
Electroless nickel plating on copper parts is a common process used to improve the corrosion resistance and decorative properties of copper parts. However, when the plating has quality issues and needs to be deplated, it is critical to select the correct nickel remover. In this article, we will discuss why nitric acid should not be used to deplate electroless nickel plating on copper parts.
In modern manufacturing, alkaline galvanizing technology is widely used due to its good corrosion protection and environmental friendliness. However, the brittleness of the plating layer may negatively affect the service life and quality of the product, so methods for detecting the brittleness of the plating layer are of particular importance. In this paper, we will introduce several commonly used methods for detecting the brittleness of alkaline galvanized coatings when alkaline galvanizing additives are used.
BZ-216 trivalent chromium black zinc passivator is a single-dosage liquid concentrate, which is a trivalent chromium black zinc process suitable for zinc plating, suitable for rack plating and barrel plating, and can be used together with the corresponding coating, which can produce bright and uniform black passivation film on the galvanized layer.
