What are the advantages of using automatic sandblasting machine for surface treatment of electronic product parts?

Advantages of surface treatment of automatic sandblasting machine for electronic product parts

Electronic product parts cover 3C shell, aluminum alloy structural parts, heat dissipation parts, connectors, hardware supports, etc. Using automatic sandblasting machine for surface treatment has the following core benefits compared with manual sandblasting:

1. The surface roughness is uniform and controllable, with high consistency.

Automatic sandblasting gun positioning, pressure, distance and sandblasting time procedures are standardized, and the roughness of the whole batch of parts is stable, and there will be no local overspray or missed sandblasting by manual sandblasting. Can stably obtain a uniform matte matte texture, and provide a suitable base surface for subsequent anodizing, spraying, oil spraying and gluing; Especially for aluminum alloy and magnesium alloy electronic product shells, it can eliminate machining knife marks and burrs and weaken scratches.

2. Remove impurities and stress, and improve the yield of subsequent processes.

Can remove the residual oil stain, iron filings, scale and demoulding residue in CNC machining; Sandblasting can slightly release the stress on the surface of the parts, and reduce the defects of foaming and paint peeling in the subsequent anode and paint. For electronic product parts that need to be bonded and assembled, the bonding adhesion is greatly improved after sandblasting coarsening.

3. The appearance effect is stable, beautifying the appearance of the product.

It can realize fine matte and matte texture, eliminate the reflection on the surface of parts and avoid the glare of electronic product shell; By adjusting the grain size of sand, the sand surface effect with different fineness can be made, which replaces part of the chemical engraving process, and the surface texture is uniform and the appearance of good products is uniform.

4. It is suitable for mass production with higher efficiency.

The automatic sandblasting assembly line and rotary automatic equipment can work continuously and process 3C parts in large quantities. Compared with manual sandblasting, the production capacity is greatly improved, which is suitable for large-scale orders of electronic products and multi-model switching in small and medium batches.

5. Reduce the fluctuation of human operation and reduce the defective rate.

It is not affected by workers' operation level, and the repeated processing effect is unified, reducing the problems of uneven thickness, local perforation and excessive sandblasting scrap caused by manual sandblasting, and the thin-walled parts of electronic products can also stably control the sandblasting cutting amount.

6. Improve the basic performance of corrosion resistance of parts

After the surface oxide layer is removed, a uniform microscopic concave-convex surface is formed on the surface of the workpiece, and the film layer is attached more completely during anodic oxidation, electrophoresis and spraying, which indirectly improves the corrosion resistance and salt spray resistance of electronic product parts.

7. The working environment is more friendly and the dust can be controlled.

The automatic sandblasting machine is equipped with a closed cavity and a dust removal and recovery system, and the abrasive is recycled and used, and the dust does not overflow; Compared with open manual sandblasting, the workshop has less dust pollution, lower abrasive loss and controllable production cost.

8. Strong adaptability to special-shaped complex parts

With swing spray gun and rotary tooling, grooves, corners and small holes of parts can be evenly sandblasted, and many special-shaped shells, cavity structures, inner cavities and chamfer positions of electronic products can also be surface treated.

Attention should be paid to sandblasting of electronic products

-For parts of thin-walled electronic products, the sandblasting pressure should be strictly controlled to prevent deformation;

-Precision holes and threaded holes need to be shielded to prevent sand from damaging threads and blocking holes;

-Choose corresponding sand materials (glass beads, white corundum, etc.) according to the base materials (aluminum, stainless steel, copper) to prevent electrochemical corrosion of electronic products caused by iron impurity residues.