Weapon oxidation

One of the elements of used gun restoration is oxidation. Oxidation is the process of treating steel by applying a special protective coating (a layer of iron oxides) to the steel. Oxidation can be carried out by chemical (hot oxidation) or electrolytic (cold oxidation) methods. The surface of the steel, protected by the oxidation process, does not further react with the environment, thus forming a permanent corrosion protection.

The procedure of hot oxidation of weapons is best done by a gunsmith who has a suitable workshop and chemicals. Before hot oxidation, the steel surface should be mechanically cleaned and degreased. After the heated solution (usually caustic soda, potassium nitrate and water in appropriate proportions), we put the steel parts to be oxidized and oxidize about 30 minutes. The final step is to protect the oxide by bathing it in oil.

Before cold oxidation, the steel surface should be mechanically cleaned and degreased. Then, using a small brush or ear bud, apply a thin layer of oxidizer (such as Tetra Gun Liquid Blue) until a uniform dark coating is achieved. Excess oxyde is wiped off with a dry cloth, the piece is rinsed with running water and wiped dry. These steps can be repeated until a satisfactory coating is obtained. The final step is to fix the applied oxyde with a gun oil such as General Nano Protection.