Blackened heat treatment of hardware and fasteners

  Hardware and fasteners such as screws, studs, nuts, screws, bolts, washers, retaining rings, pins, standard parts, hardware products, mechanical parts, auto parts, electric stove plates, bearings, ferrules, motor rotors , Stators, silicon steel sheets, high-speed steel tools, tooling fixtures, mechanical parts, sintered powder metallurgy iron-based products and other workpieces in order to prevent rust, beautiful surface and increase wear resistance, etc. Heat treatment).

  Blackening is a method of surface treatment of steel workpieces. The blackening liquid reacts with the surface of the workpiece to produce ferric oxide, that is, an oxide film. 

  The solubility of ferric oxide in solution is very small. When the concentration reaches saturation, a dense oxide film will be formed on the surface of the steel. This film can store anti-rust oil, which can prevent the corrosion resistance of the workpiece and increase the appearance of the workpiece.

  According to the heat treatment process of the blackening and bluing of fasteners and hardware, Chengchi Industrial Furnace can develop a blackening heating furnace that can be used to heat the blackening    liquid to blacken the blue hair; Steam blackening furnace. It has the characteristics of beautiful surface of blackened workpiece and good anti-rust effect.