Hardware surface coating process

The invention discloses a hardware surface coating process. The hardware surface coating process comprises the following steps that pressure casting is conducted on a hardware part, and then a spraying process is conducted. The spraying process comprises the steps of surface pre-treatment, priming paint spraying, baking in an oven, polishing treatment, and cleaning and drying. Finish paint is sprayed after priming paint spraying and drying are conducted three times, after the finish paint is dried, the whole hardware part is inspected, and a qualified product is packaged and warehoused. According to the hardware surface coating process, nano-molecules are added into the paint sprayed on the hardware part, so that interface bonding of priming paint and a coating is easily improved; the pressure casting process is adopted, so that the production efficiency of the product is improved, the procedures are simple, the surface roughness is good, a large number of machining procedures and devices are omitted, and raw materials are saved; and compared with traditional direct CNC machining based on aluminum materials, the machining cycle is shortened, labor is saved, and the cost is reduced.