Sandblasting is a common surface treatment process that uses abrasive particles ejected at high speed to clean and treat the surface of an object. The following is a detailed explanation of the principle, process and scope of application of sandblasting.

Principle
The basic principle of sandblasting is to remove unwanted substances such as surface dirt, oxides, rust, coatings, etc. by ejecting abrasive particles (such as sand, glass beads, metal particles, etc.) at high speed onto the surface to be treated, and using the kinetic energy of the particles to impact and rub the surface.

Sandblasting is widely used in many industries, mainly including:

Metalworking:
Removing rust, oil and oxide layers to prepare metal surfaces for painting or welding.

Automotive industry:
Cleaning automotive parts, removing old coatings and contaminants, and improving coating quality.

Aerospace:
Cleaning aircraft parts and structures to ensure surface defects and increase durability.

Building and Infrastructure:
Cleaning concrete surfaces to remove dirt and old coatings and improve the adhesion of subsequent coatings.

Electronics industry:
Cleaning electronic components and circuit boards to remove residues generated during welding.
Mold cleaning:
Cleaning injection molds, die-casting molds, etc. to remove adherent plastic or metal residues.
Decorative treatment:
Sandblasting is performed on the surface of stone, wood, etc. to achieve special decorative effects.

Summary
Sandblasting is an effective surface treatment process that is suitable for a variety of materials and industries. Through reasonable application, the surface quality of the product can be significantly improved, providing a good foundation for subsequent processing.