Black Treatment Method For Hex Bolts

Hexagon bolts are a very commonly used fastener, and hexagon bolt blackening treatment is also a common processing technology. As a professional fastener manufacturer, Xinchi is happy to introduce the hexagon bolt blackening treatment method for you.

The processing technology of hex bolts is different from that of ordinary bolts. In addition to substrate processing technology, it is also suitable for large hexagonal heads, and steel frame structure. Blackening treatment refers to the black surface oxide film produced by a specific treatment method to improve the compressive strength of the hex bolt, which is usually suitable for bolts above 8.8.

In fact, at room temperature, the color of black raw materials and black materials is different. Black oxide film refers to the formation of black or blue oxide film on the surface through pickling, deoiling, heating and oxidation processes. This treatment method is suitable for indoor use where high-precision, non-replaceable parts are required.

Compared with stainless steel, the hexagon bolt surface blackened metal is a black metal, and the processing temperature is not high, generally not easy to produce deformation. Compared with stainless steel, its cost is lower. However, its anti-rust performance and decorative effect can not be compared with stainless steel. When the metal material is selected to block the air, after anti-rust treatment, the surface of the hex bolt will form an oxide film. If the appearance requirements are not high, you can choose black processing.

The surface of the hex bolt is blackened, also known as a slight blue finish. Blue treatment is a chemical surface treatment method, its main role is to generate a dense oxide film on the metal surface to prevent metal rust and improve wear resistance. This treatment method is only for the surface and does not affect the internal structure, unlike alloy treatment methods such as quenching.

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. And we are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier,  XINCHI can offer a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.