Fastener coating is a layer or multiple layers of substances applied to the surface of fasteners in order to prevent corrosion, improve the service life of fasteners and improve their functionality. Here are some details about fastener coatings:
Coating materials and types: There are a variety of materials and types of fastener coatings, and suitable coatings can be selected according to different needs and environments. For example, a protective surface coating or corrosion-resistant fastener material prevents the corrosion associated with breakage. Protective barrier layers include carbon and alloy steel fasteners treated with phosphate or coated with anti-rust oil. Due to the lubricity of the coating, the wear of stainless steel fasteners can be reduced and the service life of fasteners can be extended.
Application of coating: Anti-corrosion coating refers to a coating coating on the surface of the metal to isolate it from the surrounding medium to control pipe corrosion. Applications of anti-corrosion coatings include fastening seals (such as bolts, gaskets, screws, etc.), anti-corrosion equipment linings, anti-corrosion centrifugal pumps, anti-corrosion films on various workpieces, valve bodies, cylinders, ball assemblies, anti-corrosion equipment for offshore platforms, etc. 45.
Advantages of the coating: The anti-corrosion coating has superior cyclic salt spray testing effect and can pass 5000 hours of salt spray testing. The insulation strength can reach 500-1200 volts per microinch (mil), which can achieve the effect of electrochemical corrosion. Simple construction, reliable quality, safe and pollution-free, can be used for high anticorrosion requirements or more serious rust on the metal workpiece. High adhesion of the coating, even under impact or collision can ensure that the anti-corrosion coating does not fall off, does not peel, and is firmly combined. It has good UV protection and weather resistance, can prevent fastener corrosion caused by hot soil layer and most chemicals, and has a long service life. The lubrication is good, the friction coefficient is as low as 0.05 to 0.08, and the hardness can be greater than 5H. Good flexibility, good effect, can be marked with different colors for different specific purposes, to prevent confusion.
Construction and maintenance of the coating: After the completion of the construction of the anti-corrosion coating, a series of tests should be carried out such as impact resistance, peel resistance and electrical insulation, and the qualified person can be put into use. In addition, in order to guarantee the effectiveness of the coating, regular inspection and maintenance are required.
In summary, fastener coatings play a vital role in modern industry, not only to protect fasteners from corrosion, but also to improve their performance and reliability. Choosing the right coating material and process is crucial to ensure the long-term stable operation of fasteners in a specific environment.
Post time: Dec-03-2024
