Precision sheet metal surface treatment refers to the processing, treatment or coating of the surface of sheet metal parts to achieve a series of purposes such as enhancing its surface properties, improving coating adhesion, enhancing anti-corrosion performance, and improving appearance effects.

Surface treatment of precision sheet metal parts mainly includes the following methods:

Anti-corrosion treatment

In precision sheet metal parts processing, anti-corrosion treatment is an important step. The factory will spray certain primers and topcoats on the surface of sheet metal parts to prevent oxidation and corrosion. This kind of treatment generally requires beautiful color, good weather resistance and anti-aging properties.

Electrolytic plating treatment

Electrolytic plating treatment is a surface treatment method in which sheet metal parts are immersed in a charged electrolyte and electrolyzed between the anode and cathode to form a layer of metal plating deposits on the surface of the sheet metal parts. This method can form a hard and wear-resistant protective film on the surface of the sheet metal parts, enhance corrosion resistance and strength, and extend the service life of the sheet metal parts.

heat treatment

Through heat treatment, the physical properties of sheet metal parts such as hardness, toughness and strength can be improved. Heat treatment usually includes operations such as annealing, normalizing, quenching and tempering to meet the strength and hardness requirements of sheet metal parts. However, some precision sheet metal parts use materials that are not well suited to heat treatment.

Mechanical polishing

Mechanical polishing refers to the method of using mechanical abrasives to rub the surface of a rigid or soft body to obtain a smooth surface. This method can not only improve the finish and accuracy of sheet metal parts, but also eliminate surface defects and defects, and improve the wear resistance and corrosion resistance of sheet metal parts.

chemical polishing

Chemical polishing is a method that uses electrolysis and magnetic field to immerse the surface of sheet metal parts in a specific solution through pool stirring, and apply a certain electric field to remove surface oxides. This surface treatment method can quickly achieve a higher surface finish, while eliminating surface defects and bad oxide films, and enhance the finish and corrosion resistance of sheet metal parts.

Spray or sandblast

The purpose of spraying or sandblasting the surface of sheet metal parts is to change the texture and appearance of the surface and improve the appearance and decoration. The spraying method can be spray paint, coating, rubber, resin and coating, etc. These substances can enhance wear resistance, anti-corrosion and corrosion resistance. Sandblasting can be used to remove the oxide layer and other undesirable layers on the surface to make the surface smoother. Not only that, sandblasting also has the effect of increasing surface roughness and improving coating adhesion.

To sum up, precision sheet metal surface treatment is an important processing method that can comprehensively improve the appearance, performance and durability of sheet metal parts. In the manufacturing process of precision sheet metal parts, reasonable surface treatment methods can bring many benefits to the production and use of precision sheet metal parts and improve the quality and service life of the product.