Three major surface treatment technologies for hardware

Raisingelec can provide all kinds of screw products.Although the size of the screw is small, the function is not small, and the scope of application is also very wide, but many manufacturers still pay more attention to the use of the screw. Among them, the surface treatment technology is the most common way to improve the performance and quality of the screw. In order to let everyone better understand the surface treatment technology of screws, Standard Parts Network has made a summary.

The part to be plated is immersed in an aqueous solution containing the metal compound to be deposited, and an electric current is passed through the bath to precipitate and deposit the plated metal on the part. General electroplating includes galvanized, copper, nickel, chromium, copper-nickel alloy, etc., and sometimes blackening , phosphating, etc. are also included.

The product surface is impacted by the particles of the coating metal, and the coating is cold welded to the surface of the product. General screws are mostly plated, but hexagonal wood screws used in electric power, highways, etc. are hot-dip galvanized; the cost of electroplating is generally 0.6-0.8 yuan per kilogram, and the hot-dip galvanizing is generally 1.5-2 yuan/kg. higher cost. The effect of electroplating: The quality of electroplating is mainly measured by its corrosion resistance, followed by appearance. Corrosion resistance is to imitate the working environment of the product, set it as the test condition, and perform a corrosion test on it.

The product can be processed by heating to about 83 ℃ at room temperature. In the process of processing, generally soak the metal for about 15-20 minutes. After soaking, wash it with clean water and dry it naturally before use. It will not deteriorate under normal temperature and pressure for up to 3-5 years. In extreme environments such as high temperature and high pressure, the catalyzed product still has high anti-corrosion and wear-resistant properties.

Post time: Jun-22-2022