There are several surface treatment methods for non-standard screw processing?

Non-standard screw processing custom surface treatment is indispensable, most of the non-standard screw parts in order to achieve a certain performance or Surface treatment will be carried out upon request. It can be said that surface treatment is also an important step in the processing of non-standard screw fasteners. So what are the surface treatment methods for non-standard screw processing? The following is a brief introduction to the surface treatment of non-standard screws:

1. Passivation

Non-standard screw passivation treatment is to dissolve the iron pollution hidden on the screw during the passivation process The surface of the non-standard screw is formed into a passivation protective film, which can protect the non-standard screw from being corroded. Generally, the surface treatment method of passivation is applied to electronic products.

Advantages of passivation of non-standard screws: After passivation of non-standard screws, the specifications and The color doesn't change much. Basically, the original appearance of non-standard screws can be maintained. The passivation treatment of non-standard screws removes the contaminants on the surface of non-standard screws, which can enhance the rust resistance and corrosion resistance of screws. Compared with other surface treatment methods, the passivation treatment of non-standard screws is more economical and saves money, because the passivation treatment of non-standard screws is carried out in a non-reactive state.

2. Galvanized/galvanized

Non-standard screw surface plating or galvanizing can enhance the corrosion resistance of screws, but different types of electroplating Layers can be manufactured with different degrees of corrosion resistance. If you need to know the degree of corrosion resistance, you can test the degree of corrosion resistance through the salt spray test. The advantages of using galvanized/galvanized non-standard screws are: the surface of non-standard screws can be plated/galvanized to enhance the corrosion resistance of non-standard screws. It can also increase the gloss of the non-standard screw surface.

3. Non-standard screws plated with Alloy/Zinc-Fe alloy are generally used to prevent For screw fasteners that require high rust ability, general non-standard screws can pass the salt spray test for up to 1,000 hours after the surface treatment of galvanized alloy/zinc-iron alloy.

4. Electrophoresis electrophoresis surface treatment is to use electrophoresis technology to uniformly cover paint, latex, rubber and other particles to non- mark on the surface of the screw fastener. After the surface treatment by electrophoresis, the coating on the surface of the non-standard screw is plump, uniform, flat and smooth.

5. Use a spray gun to evenly spray a thin layer of color on the non-standard screw fasteners layer to turn non-standard screws into more different colors, mainly used to beautify the appearance of non-standard screws. Spray paint is also mainly used in the electronics industry.