When manufacturing hexagonal bolts, there is a very important part of anti-corrosion treatment on the surface. You may ask "how to do anti-corrosion treatment". In fact, the corrosion conditions are different and the anti-corrosion treatment methods adopted are different. Next, 2H Heavy Hex Nuts Company introduces commonly used anti-corrosion treatment methods.

1. The cadmium plating layer has good corrosion resistance, so some hexagonal bolt manufacturers will use cadmium plating to enhance the rust resistance of the bolts, but the waste liquid generated during the cadmium electroplating process will be more expensive when processed. Expensive, so it is more suitable for surface treatment of hexagonal bolts on airplanes and oil drilling platforms.

2. Sherardizing solution is a more commonly used method for surface anti-rust treatment of fasteners, which belongs to the thermal diffusion coating of solid metallurgical zinc powder. Because of its good uniformity, it can be spread well in the threads and blind holes, and it will not pollute the environment during processing.

3. Galvanizing is also a common anti-rust treatment method for the surface of hexagonal bolts. However, since hydrogen embrittlement is more likely to occur during the galvanizing process, in order to maintain the consistency of the bolt pre-tightening force, it can be coated after galvanizing. Lubricating substance to increase the torque of the bolt.

4. The stability of the chrome-plated layer is very good, and the surface of the hexagonal bolts can still remain bright after chrome plating, and can increase the wear resistance of the bolts, so many decorative hexagonal bolts use this method when they are anti-rust.

Through the above introduction, Hex Bolt Manufacturers hopes that you can simply refer to the content of this article in future use.

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