Surface Treatment Process of CNC Precision Parts

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Surface Treatment

Surface treatment is a process of artificially forming a surface layer on the surface of the substrate material that is different from the mechanical, physical and chemical properties of the substrate. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. For metal castings, we more commonly used surface treatment methods are mechanical polishing, chemical treatment, surface heat treatment, spraying the surface, surface treatment is to clean, clean, deburring, degreasing, deoxide, etc. on the surface of the workpiece.


Electrolysis is a process in which chemical synthesis of high-purity substances and material surface treatment are carried out by electrochemical reactions occurring at the interface between an electrode as an electronic conductor and an electrolyte as an ion conductor.



Polishing refers to the use of mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece to obtain a bright and flat surface processing method. It is the use of polishing tools and abrasive particles or other polishing media to modify the surface of the workpiece.



The sandblasting process uses compressed air as the power to form a high-speed jet beam, and sprays the spray material to the surface of the workpiece to be processed at a high speed, so that the appearance of the outer surface of the workpiece changes. Due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece Obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved.



Oxidation refers to the ability of a substance to obtain electrons. Substances in high valence state and active non-metallic elements (such as fluorine, chlorine, oxygen, etc.) are generally oxidizing. The oxidation treatment of metals is the interaction of the metal surface with oxygen or oxidant to form a protective oxide film to prevent metal corrosion.



Electroplating is a metal surface treatment that involves coating a very thin layer of another metal or metal alloy on a metal part to prevent corrosion and oxidation of the workpiece, or to change its appearance. Tin, nickel, zinc (galvanized) and chromium are all common electroplating metals, while copper and carbon steel are the two most common metals that use electroplating processes.

Laser Carving

Laser engraving is to make precise and permanent marks on metals and certain plastics.


Manual grinding can remove machining marks, eliminate burrs on the surface of parts, production lines and adhesion marks and other product defects. The flatness of the parts will be improved and the roughness will be reduced to achieve a smooth and consistent appearance surface.

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