Black Oxide Coating
Black oxidation treatment produces a layer of oxide film on the metal surface to isolate air and achieve the purpose of rust prevention.
Black Oxide Coating
Black oxidation treatment produces a layer of oxide film on the metal surface to isolate air and achieve the purpose of rust prevention.
Description
Applicable Materials
Stainless steel, Aluminum, Copper, Brass, Stainless iron
For Serivices
Specifications
MIL-STD-13924D, AMS-2485G , MIL-F-495
Applications
Machine parts; Medical tools and equipment; Automotive parts; Hand tools
Features
Appearance
Smooth black, Matte black
Process Type
Hot alkaline black oxide, Cold black oxide, Molten salts black oxide
Strengths
Dimensional Stability, Versatility, Durability, Protection, Weldable
Coating Thickness
0.25-0.75 µm
Black Oxide is a method of surface oxidation treatment, commonly known as “boiling black.” Is to put the workpiece into the alkaline liquid for oxidation treatment so that the surface of the workpiece to generate a layer of ferric oxide, the surface rust, can also increase the appearance, for quenching the workpiece can also play the role of eliminating internal stress.
The oxidation treatment of steel is also called blue, black, black cooking. After oxidation treatment, protective magnetic iron oxide is formed on the surface of the material. This oxide film is usually blue or black and sometimes black brown. Its color depends on the surface state of the part, the chemical composition of the part material, and the oxidation treatment process. The oxidation treatment methods include saltiness oxidation, alkali-free oxidation, and electrolytic oxidation. Most of them are alkaline oxidation.