Precision Sandblasting

Core Manufacturing Technologies & Services

LEEDO Technology provides precision sandblasting surface treatment services. Through high-pressure media blasting, surface roughness can be precisely controlled to improve appearance, enhance subsequent coating adhesion, or serve as a pretreatment process before anodizing and other surface treatments.

Precision Sandblasting
Strict control of blasting pressure, media particle size, and blasting angle ensures uniform and consistent surface roughness.
Metal Surface Activation
Sandblasting removes oxide layers and contaminants, activating the metal surface to improve adhesion for subsequent treatments.
Surface Roughening Technology
Surface roughness Ra values can be adjusted according to design requirements, providing the optimal interface for coatings or adhesive bonding.
Decorative Texture Treatment
Fine, medium, and coarse sandblasted textures are available to give products a refined industrial appearance.
Surface Pretreatment Services
Used as a pretreatment process for anodizing, electroless nickel plating, PTFE coating, and other surface treatments to ensure downstream process quality.

Main Categories & Technical Specifications

Different blasting media and particle sizes are selected according to material characteristics and application requirements, allowing precise control of surface effects.

Technical specifications for precision sandblasting
Glass Bead Blasting
Uses round glass bead media to create a smooth and uniform matte finish without damaging substrate dimensional accuracy.
Aluminum Oxide Blasting
Uses corundum media with strong cutting force, suitable for applications requiring higher surface roughness or stronger adhesion.
Surface Roughening
Controls Ra values according to downstream process requirements, providing optimal surface conditions for coating, bonding, or welding.
Uniform Matte Finishing
Ensures consistent matte appearance across each product in batch production, suitable for consumer electronics and architectural hardware.
Surface Pretreatment
Serves as a necessary pretreatment step before downstream processes such as anodizing, PTFE coating, and electroless nickel plating.

Material Compatibility

Applicable to various metal materials. Suitable blasting media are selected according to material characteristics to ensure optimal sandblasting results without damaging the workpiece.

Aluminum Alloys
The most common sandblasting substrate. When combined with anodizing, it creates a uniform and refined sand-textured appearance.
Stainless Steel
Glass bead or steel grit treatment provides a satin matte effect or enhances coating adhesion.
Titanium Alloys
After surface activation, MAO or other treatments can be applied to ensure coating bonding strength.
Copper Alloys
Sandblasting removes oxide layers and provides a clean, active surface for subsequent plating or welding.

Surface Finish & Appearance Options

Multiple sand-texture levels, from fine to coarse, can be flexibly selected according to product appearance design or downstream process requirements.

Surface finish and appearance options for precision sandblasting
  • Fine Sandblasting
    Low surface roughness with a delicate and soft appearance, suitable for consumer electronics and precision instrument exterior parts.
  • Medium Sandblasting
    Moderate roughness that balances appearance quality and coating adhesion, making it the most common option.
  • Coarse Sandblasting
    A high-roughness surface that strengthens mechanical interlocking, suitable for coatings or bonding applications requiring high adhesion strength.
  • Uniform Matte Finish
    Precise control of sandblasting parameters ensures consistent appearance between batches, suitable for mass-production quality control.
  • Pre-Anodizing Treatment
    Designed specifically as a pretreatment before anodizing, removing surface defects and homogenizing the surface to ensure post-anodizing appearance quality.

Design & Manufacturing Considerations

Sandblasting has a major impact on downstream processes and final appearance. Surface roughness, subsequent surface treatment, appearance consistency, and adhesion requirements should be evaluated in advance.

Design and manufacturing considerations for precision sandblasting
  • Surface Roughness Requirement Evaluation
    Target Ra values and tolerance ranges should be defined in advance according to downstream process or appearance requirements.
  • Pre-Anodizing Surface Preparation Planning
    Blasting media size and pressure settings should be confirmed to ensure uniform appearance after anodizing without texture differences.
  • Surface Texture Consistency Control
    Media quality and equipment parameters are strictly controlled during mass production to avoid batch-to-batch appearance variation.
  • Appearance Homogenization Design
    For complex-shaped parts, sandblasting blind spots should be evaluated to ensure uniform treatment across the entire surface.
  • Gloss and Matte Effect Adjustment
    Final surface gloss can be precisely adjusted through combinations of media particle size and blasting pressure.
  • Surface Adhesion Enhancement Planning
    For subsequent coating or bonding applications, optimal sandblasting conditions are selected to strengthen interface bonding.

Industrial Applications

Sandblasting is widely used across various industries. Whether used as a final appearance treatment or as a pretreatment before downstream processes, it improves product texture and process stability.

Consumer Electronics
Matte sand-textured treatment for exterior parts such as laptops and smartphones improves touch feel and visual quality.
AI Server Structural Components
Sandblasting of server housings and structural parts serves as a pretreatment before anodizing or other surface treatments.
Semiconductor Equipment
Surface activation of precision chamber parts ensures uniform bonding of downstream coatings.
Optical Communication Equipment
Matte treatment of optical module housings reduces stray light reflection interference.
Medical Equipment
Surface homogenization of medical instruments meets biomedical cleanliness requirements.
Aerospace Components
Surface strengthening of structural parts improves coating adhesion and fatigue life.
Bicycle Parts / High-End Architectural Hardware
Decorative sandblasting gives products a high-quality industrial aesthetic.