Thread rolling plate

The surface treatment of fasteners refers to the process of forming a covering layer on the surface of the fasteners by some methods. After the surface treatment of the fasteners, they can present a more beautiful appearance and the corrosion resistance of the fasteners themselves will be improved.There are several methods of surface treatment for fasteners.

1. Electroplating of fasteners

The electroplating of fasteners means that the part of the fasteners that needs to be electroplated is immersed in a specific aqueous solution, which will contain some deposited metal compounds. In this way, after passing through the aqueous solution with an electric current, the metal material in the solution of the titanium plating twisted wire plate is precipitated out and attached to the immersed part of the fasteners.The electroplating of fasteners generally includes galvanized, copper, nickel, chromium, copper-nickel alloy, etc.

2, hot dip galvanized fasteners

Hot dip galvanization of fasteners is to dip the fasteners of carbon steel into the plating tank of melted zinc with the heat of about 510℃, so that the iron-zinc alloy on the surface of the fasteners will be transformed into zinc passivation, thus obtaining the surface treatment effect.The price of hot-dip galvanizing for non-standard wireboard fasteners is higher than electroplating, about 1.5 to 2 yuan per kilogram.

3. Mechanical plating of fasteners

Mechanical plating of fasteners refers to the specific physical and chemical means, to coating metal powder, to impact the surface of the fastener, so coating metal through the form of cold welding, forming a coating on the surface of the fastener, to achieve the effect of surface treatment.Mechanical plating of fasteners is mainly applied to spare parts such as screws, nuts and gaskets.

The surface treatment of fasteners, the main purpose is to make the fastener itself to obtain anti-corrosion ability, in order to increase the reliability and adaptability of the use of fasteners, so the quality of the surface treatment of fasteners, more mainly to check whether the anti-corrosion ability of fasteners is effectively increased, and the extent of increase is in line with the expected requirements.