Blackening and manganese phosphate coating

Blackening (black oxide) – treatment by immersion at high temperatures for steels and non-ferrous metals at thickness of 0.9 microns; black oxide according to MIL-P-13924;

blackening of steel, iron and stainless steel. However, the blackening process is not anti-corrosive, therefore: at the end of the blackening process, according to customer requirements, the parts are oiled to protect them from corrosion. The coating is performed in several applications: by hanging or in drums (for small parts).

Size of tanks: Length: 500 mm, width: 700 mm, depth: 1,500 mm. Weight ≤ 500 kg.

 

Manganese phosphate coating is a protective coating for steels with thickness of 15 microns according to MIL-P-16232 TYPE M standard. This chemical coating process is usually applied as preparation for the painting of metal parts, to achieve optimal adhesion between the metal and the paint; thus, it effectively prevents separation of the paint from the metal.

 

The protective phosphate coat has a fine crystalline appearance, of a grayish to black color. At the end of the process, the parts (items that remain unpainted) are oiled according to customer requirements.