Blistering of galvanizing passivation films is a common quality problem in the plating industry, which not only affects the appearance of metal parts but also reduces corrosion protection. Blistering can be caused by a variety of factors, including improper pretreatment, imbalance in the composition of the galvanizing passivation solution, etc. Let's take a look at some of them in this issue.
Metal parts treated by the trivalent chromium colored zinc passivation process are often subjected to a salt spray test (also known as a salt spray test) to evaluate their corrosion resistance. The salt spray test is an accelerated corrosion test method that is widely used to evaluate the corrosion resistance of coatings, metals and other materials in marine or saline environments.
Electroless nickel plating is a process in which a nickel layer is deposited on the surface of a material without an impressed current. The main purposes of heat treatment after electroless nickel plating are as follows:
In the electroplating industry, chromium plating is a common surface treatment method, which not only provides a decorative bright appearance, but also gives the workpiece good hardness, corrosion resistance and wear resistance. However, the surface roughness of the plating is an important index to measure the quality of the plating, which will directly affect the performance and appearance of the plating. The following are several key factors that affect the surface roughness after chromium plating:
Some customers have asked if aluminum alloy can be chrome plated. Our answer is yes. Chromium plating of aluminum alloys usually requires several complex processing steps to ensure the adhesion and durability of the chromium coating. In this issue, let's take a look at some of the basic steps of aluminum chrome plating:
The alkaline zincate galvanizing process is a common electroplating process used to coat a metal surface with zinc to provide a protective layer against corrosion. In the basic zincate galvanizing process, sodium carbonate is usually added to the basic zincate galvanizing process, which has several functions:
