What are the treatment methods for blackening of hexagon bolts? Its production process is different from ordinary fish. In addition to substrate processing technology, it can also be used for… It is mainly used for large hexagon heads, also known as large hexagon heads, steel structures, etc. Hexagon bolt blackening refers to blackening after blackening treatment, with a strength function level of 8.8 or higher. So what is blackening treatment? In fact, at room temperature, the colors of black materials and black materials are different. Melanin refers to the formation of a black or blue oxide film on the reaction surface through acid washing, degreasing, heating, and oxidation. High accuracy, unable to replace accessories. More indoor use. The black metal surface of hexagon bolts produces an oxide layer, which is not high in processing temperature and generally does not deform.
Compared to chrome plating, of course, it is much cheaper, but its rust prevention and decorative effect is not as good as chrome plating. Select metal to isolate air. After rust prevention treatment, a layer of oxide film will appear on the metal surface of the hexagon bolt. If the appearance requirements are not high, black treatment can be selected. The surface of steel is blackened, also known as a little blue. Blue is a chemical epidermal process. Its main function is to form a dense oxide film on the metal surface to prevent metal corrosion. In order to improve wear resistance, only surface treatment is performed without affecting its internal structure. This is different from the substrate used for quenching, not an alloy.
Post time: Mar-24-2023