Black Oxide Coating For Precision Machining Parts

DALIAN, China - March 5, 2023 - PRLog -- What is Black Oxide Coating?

Black oxide coating is a kind of coating that belongs to the category of conversion coating. Conversion coating is a kind of coating made by chemical process. The name "black oxide" comes from the fact that the coating makes the color of any metal surface black/matte.

The black oxide polishing process involves immersing machined metal parts in alkaline solution. Then, the solution converts the iron on the metal surface into magnetite. This magnetite forms a black coating on the metal surface.

Black oxide coating can be applied to stainless steel, copper, copper base alloy, zinc and other materials. This provides many benefits. First of all, black oxide surface treatment not only improves the appearance of parts, but also enhances the dimensional stability of parts. It also reduces the light reflection on the surface, which is an important requirement for components involving radiation, because for IR sensors, UV sensors, passive infrared detectors and other products, excessive or reflected light will completely change the results.

In addition, black oxide coating is beneficial because it increases the thickness of steel. Even if it is microscopic, it also helps to maintain the sharpness of things such as drill bits or screwdrivers. In addition, it helps to reduce corrosion and friction caused by the presence of oil or wax. Wax or oil also allows the material to be waterproof.

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