Black Oxide Coating Process

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Black oxide coating process.

The black oxide process is a chemical conversion coating. Black oxide cannot be produced over plated parts zinc nickel chromium cadmium phosphate. Black oxide black oxide coating. This plating must be stripped prior to the black oxide process.

Epi is the only supplier to offer all three black oxide chemical processes for steel. The coating has almost no thickness. It is used to add mild corrosion resistance for appearance and to minimize light reflection. The metal in the part reacts with chemicals used during the surface treatment to create a hard magnetic black iron oxide shell over ferrous alloys.

A further advantage black oxide has over other coatings is that as a conversion coating there is minimal buildup which can generally be measured in microns. Hot black oxide 285 f mid temperature black oxide 225 255 f room temperature black oxide 65 85 f all of our black oxide processes can be used in house saving finishing costs cutting lead times and increasing productivity and quality. The black oxide process. Metals with a black oxide coating are dimensionally stable and have a matte black appearance.

Unlike nickel or zinc electroplating the black oxide is not deposited on the surface of the substrate. Tips and tricks to produce a durable original looking black oxide phosphate plating on used bolts. The primary purpose of black oxide coatings is to provide an attractive uniform color to steel or iron parts. To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax.

This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. This process produces by simple immersion a uniform black coating of ferro ferric oxide. Black oxide should be used for indoor use or limited exposure to corrosive conditions. Black oxide blackening oxidizing black passivating gun bluing is a type of conversion coating process.

Black oxide can be applied through either a hot process or a cold process. The supplementary coating after finish will dictate the final appearance and function of the part. Aka black penetrate black magic black n and gun bluing chicago il black oxidizing is an effective metal finishing process with which a black oxide blackening conversion coating is applied to parts to add corrosion resistance improve appearance minimize light reflection and serve as a base for other coatings.