Hardware surface coating process

Abstract

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.

Description

technical field [0001] The invention relates to a surface coating process, especially a hardware surface coating process. Background technique [0002] Metal surface coating is a method of protecting metal from oxidative corrosion. Spraying paint on the metal surface is a very important means of maintaining metal corrosion resistance. Near-end time With people's pursuit and longing for the texture of hardware products, more and more daily-use products are related to hardware components, especially products with the appearance of mobile phone hardware. The good surface coating remains continuous and intact, and the combination is good , can become a barrier to inhibit the intrusion of corrosive media. [0003] The process of traditional hardware metal surface coating is very complicated, mainly because the surface layer of hardware needs multiple pre-treatments to remove the oxide layer, waste residue, corrosion layer, etc. on the surface of hardware; usually pre-treatment ...

AI Technical Summary

Problems solved by technology

[0003] The process of traditional hardware metal surface coating is very complicated, mainly because the surface layer of hardware needs multiple pre-treatments to remove the oxide layer, waste residue, corrosion layer, etc. on the surface of hardware; usually pre-treatment requires pre-degreasing → degreasing→hot water washing→cold water washing→pickling→cold water washing→surface conditioning→phosphating→cold water washing→pure water washing(1)→pure water washing(2), and then spray oil-based paint. The appearance effect is poor, the surface layer is covered with oily paint, and there is no metallic luster

In addition, the general hardware exterior parts are directly processed by aluminum CNC, and the exterior parts must be processed at least 5 times to achieve the effect. The processing cycle is long and wastes manpower time.

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