Stainless steel screws are made of metal, and there are […]
Stainless steel screws are made of metal, and there are four main ways to prevent metal corrosion, namely the nature of the material, the environment in which it is used, the interface between the data and the environment, and the design of the improved metal structure. Unless there is a special need. Or completely isolate the appearance of the screw from the environmental elements that will cause corrosion, which may not be practical in practice, and may be very difficult. Improving the design of the metal structure can improve the impact of special circumstances under certain conditions, but the design of most stainless steel screws cannot be fully modified, and its maintenance effect is not eternal. Therefore, this method cannot basically deal with the problem. Corrosion protection, that is, the appearance of anti-corrosion treatment is currently the most widely used method.
Stainless steel screw surface anti-corrosion treatment refers to the use of various methods to apply a maintenance layer on the metal surface. Its role is to isolate the metal from the corrosive environment to prevent the corrosion process or reduce the contact between the corrosive medium and the metal surface. The purpose of avoiding or mitigating corrosion.
The maintenance layer shall be able to meet the following requirements:
1.Corrosion resistance, wear resistance, high hardness,
2. Tight structure, intact, and small pores.
3. Strong separation and good adhesion from the base metal.
4. Spread evenly and have a certain thickness.
The maintenance layer is usually divided into two types: metal coating and non-metal coating. Metal coating refers to the use of a metal or alloy with strong corrosion resistance to form a maintenance layer on the surface of easily corroded metals. This coating is also called plating. There are many methods and varieties of metal plating, the most common of which is electroplating, followed by molten metal dip plating (hot dip plating) and chemical surface treatment. Non-metallic coating refers to the use of organic polymer materials such as paint and inorganic materials such as ceramics to form a maintenance layer on the surface of metal equipment or parts. The maintenance layer can completely isolate the base metal from the environmental medium and prevent the base metal from being corroded due to contact. Corrosion in stainless steel standard parts.
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