Hardware, fastener black heat treatment
Hardware and fasteners such as screws, studs, nuts, screws, bolts, gaskets, rings, pins, standard parts, hardware products, mechanical accessories, auto parts, electric stove plates, bearings, rings, motor rotors, stator, silicon steel, high speed steel cutters, mould jig, mechanical parts, sintered powder metallurgy. Ferrous metal products and other workpieces need black heat treatment (bluing heat treatment) to prevent rusting, surface appearance and wear resistance.
Blackening is a method for surface treatment of iron and steel parts. Through the black liquor and the surface of the workpiece chemical reaction, production of iron oxide, that is, oxide film. The solubility of Fe3O4 in solution is very small. When the concentration reaches saturation, a denser oxide film will be formed on the surface of steel. This layer of film can store antirust oil, 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 blue of the fasteners and hardware,ChengChi furnace furnace can be used to heat black hair blue with black liquid and provide a well steam blackening furnace for powder metallurgy and castings. It has the characteristics of beautiful appearance and good rust prevention effect of the blackening workpiece.
