To judge the quality of the surface treatment of Flat Head Rivet Nuts, it is more important to check whether the anti-corrosion ability of flat-head rivet nuts is effectively increased, and whether the increase range meets the expected requirements. After surface treatment, the flat head rivet nut can present a more beautiful appearance, and the corrosion resistance of the flat head rivet nut itself will also be improved. The main purpose is to make the flat head rivet nut itself have anti-corrosion ability, so as to increase the reliability and adaptability of the flat head rivet nut.
Electroplating, hot-dip galvanizing, and mechanical plating on the surface of flat-head rivet nuts are the most common methods. We will introduce them separately below.
- Electroplating of flat head rivet nuts
The electroplating of the flat head rivet nut refers to immersing the part of the flat head rivet nut that needs to be electroplated into a specific aqueous solution. The aqueous solution will contain some deposited metal compounds, so that after the current passes through the aqueous solution, the metal substances in the solution are precipitated and adhered to On the immersed part of the flat head rivet nut. The electroplating of flat head rivet nuts generally includes zinc, copper, nickel, chromium, copper-nickel alloy and so on.
- Hot dip galvanizing of flat head rivet nuts
The hot-dip galvanizing of flat-head rivet nuts is to immerse flat-head rivet nuts with carbon steel components in a molten zinc plating tank with a heat of about 510°C, so that the iron-zinc alloy on the surface of the flat-head rivet nuts will be transformed into passivated zinc, thereby Obtain the surface treatment effect.
- Mechanical plating of flat head rivet nuts
The mechanical plating of flat head rivet nuts refers to the use of specific physical and chemical means to impact the surface of the flat head rivet nut with the powder of the plated metal, so that the coated metal forms a coating on the surface of the flat head rivet nut through the form of cold welding to reach the surface Treatment effect. The mechanical plating of flat head rivet nuts is mainly suitable for spare parts such as screws, nuts and washers.