Difference between zinc-nickel alloy plating and galvanizing of fasteners

Zinc-nickel alloy plating is a very common method of electroplating in modern times and it has its unique plating process compared to galvanizing and zinc plating. In various alloys, one will add various zinc and nickel alloy coatings in the last step and this plating can mainly play a very protective role. Various zinc and nickel alloys are ideal for use in industrial environments and harsh marine environments. In the use of the zinc-nickel alloy plating process, the nickel content is generally 8 to 9%, so its wear resistance will be very good, if the content is too high or too low will be very poor. Therefore, the production process of zinc-nickel alloy plating has very strict requirements.

Comparison of zinc-nickel alloy coating with galvanized coating.

1. Corrosion resistance. Galvanized and zinc-nickel alloy surfaces a functional for plating, zinc-nickel alloy in corrosion resistance is far better than the traditional galvanized, which is why a researcher spends a lot of work time managing the energy to study the development of zinc-nickel alloy the main issue of the reason. Zinc-nickel alloy coating can be analyzed after color passivation technology treatment in the neutral salt spray is easy to be able to pass 1000 hours without white rust, and galvanized layer after color passivation can pass 120 hours is not much. Zinc-nickel alloy coating material after China's white pollution passivation method after treatment in a neutral salt spray can easily understand through 400 hours without white rust, while the galvanized layer by blue and white passivation can pass 96 hours is not much.

2. Appearance. Generally speaking, the colored passivation layer of zinc-nickel alloy is not as bright as the galvanized layer, especially when the nickel content in the alloy coating is high. The white passivation color of zinc-nickel alloy is not as white as the galvanized layer. With the increase of zinc-nickel alloy products on the market, people have been able to accept the color difference between the zinc-nickel alloy passivate layer and the galvanized passivate layer.

3. Cost for producers. As the surface coating structure of zinc-nickel alloy contains a certain time proportion of the metal nickel, and the price level of nickel is much higher than zinc, so electroplating zinc-nickel alloy than electroplating zinc technology production and management costs are much higher.

4. Market application. Zinc plating technology has been widely accepted by the market, zinc-nickel alloy process as a "new" electroplating process is not widely popular, so the application of galvanizing technology is larger and more common. Zinc-nickel alloy has been used in the market for a long time, but due to the low application cost, the process is quite mature, and the rapid development of zinc-nickel plating certainly has good application prospects.

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