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Maintenance layer of Screws
- Jul 30, 2018 -

1, corrosion resistance, wear resistance, high hardness,

2, the structure is strict, intact, the pore is small.

3, with the matrix metal separation strong, good adhesion.

4, the average spread and has a certain thickness. Maintenance layer is usually divided into metal coating and non-metallic coating two categories, metal coating refers to the use of strong corrosion-resistant metal or alloy in the easy to corrode the metal surface constitutes a maintenance layer, this coating is called coating. There are a lot of methods and varieties of metal coating, of which the most common is electroplating, followed by molten metal leaching (hot dip plating) and chemical appearance disposal.

Non-metallic coating refers to the use of organic polymer materials such as paints, and inorganic materials such as ceramics, metal equipment or parts on the surface of the formation of maintenance layer, the maintenance layer can be the matrix metal and environmental media complete isolation, to avoid the substrate metal corrosion in the stainless steel parts of the medium and corrosion.