Black Oxide Coating Process

The black oxide process occurs because a chemical reaction ensues between the surface of the metal part and materials used in the coating.

Black oxide coating process.

The supplementary coating after finish will dictate the final appearance and function of the part. Instead the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. Black oxide black oxide coating. 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.

The black oxide process. 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. This process produces by simple immersion a uniform black coating of ferro ferric oxide. The black oxide process is a chemical conversion coating.

The coating has almost no thickness. Great for car restorations where you want that factory bla. This plating must be stripped prior to the black oxide process. To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax.

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. Black oxide can be applied through either a hot process or a cold process. This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. Black oxide should be used for indoor use or limited exposure to corrosive conditions.

Metals with a black oxide coating are dimensionally stable and have a matte black appearance. Black oxide blackening oxidizing black passivating gun bluing is a type of conversion coating process. 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.

Epi is the only supplier to offer all three black oxide chemical processes for steel. Unlike nickel or zinc electroplating the black oxide is not deposited on the surface of the substrate. Black oxide cannot be produced over plated parts zinc nickel chromium cadmium phosphate.