What are the advantages and disadvantages of different types of abrasives in sandblasting in Dalian?

Dalian sandblasting processing, as an important surface treatment technology, has a wide range of application prospects. With the increasing demand for environmental protection, automation, and refinement, sandblasting technology will continue to optimize and innovate, providing more efficient, environmentally friendly, and high-quality solutions for the manufacturing industry. Whether it is metal processing, plastic processing, or architectural decoration, sandblasting will continue to play its unique role in promoting the progress of industrial production.

Select appropriate abrasives based on the material and processing requirements of the workpiece to avoid excessive damage to the workpiece. Regularly inspect sandblasting equipment to ensure its normal operation and avoid affecting the processing effect due to equipment failure. During the sandblasting process, a large amount of dust and noise will be generated. Operators should wear protective equipment such as masks, goggles, and earplugs. Install a dust recycling system to reduce environmental pollution and save abrasive resources.

What are the advantages and disadvantages of different types of abrasives in sandblasting in Dalian?

Quartz sand

Advantages: Relatively affordable price and wide range of sources. Moderate hardness, capable of effectively removing impurities such as rust and oxide scale on metal surfaces, suitable for general rust removal and roughening treatment.

Disadvantages: The dust is relatively large, and long-term use may pose a certain risk to the health of operators. In addition, in environments with high environmental requirements, the cost of dust treatment is relatively high. Quartz sand has relatively poor wear resistance and is prone to breakage during sandblasting, requiring frequent replenishment of abrasives.

Brown corundum

Advantages: High hardness, good toughness, strong cutting ability, able to quickly and effectively remove impurities on the surface of the workpiece, while obtaining high surface roughness. Suitable for sandblasting of high hardness metal materials such as stainless steel and alloy steel, with a long service life and can be reused multiple times.

Disadvantage: The price is higher than that of quartz sand. During sandblasting, due to its high hardness, there is relatively more wear and tear on equipment such as spray guns, which increases the maintenance cost of the equipment.

White fused alumina

Advantages: Higher hardness than brown corundum, high purity, strong grinding force, can achieve high smoothness and accuracy on the surface of the workpiece. Suitable for sandblasting of precision parts, optical instruments, etc. that require high surface quality. White corundum has good chemical stability and is not prone to chemical reactions with the workpiece, ensuring the surface properties of the workpiece.

Disadvantage: The price is relatively high. Due to its high hardness and relatively high brittleness, it is prone to breakage during sandblasting, resulting in rapid consumption of abrasives.

silicon carbide

Advantages: It has high hardness and wear resistance, strong cutting ability, and can efficiently process the surface of workpieces in a short period of time. It is suitable for processing high hardness materials such as hard alloys, ceramics, etc. The particle shape of silicon carbide abrasive is relatively sharp, which can achieve good roughness and cleanliness on the surface of the workpiece.

Disadvantage: Expensive price. Silicon carbide abrasive has high brittleness and is prone to generating dust during sandblasting, which has a certain impact on the environment and the health of operators, and dust treatment is difficult.

Glass bead

Advantages: Soft texture, regular shape, minimal damage to the surface of the workpiece during sandblasting, and the ability to produce uniform surface roughness. It can be used for workpieces that require high surface quality and do not want excessive scratches, such as aluminum alloy products, plastic parts, etc. After sandblasting with glass beads, the surface of the workpiece has a good glossiness and can play a certain decorative role.

Disadvantages: Glass beads have low hardness and relatively weak ability to remove impurities. For workpieces with thick oxide skin or stubborn stains on the surface, the sandblasting effect may not be ideal. Glass beads are prone to breakage during sandblasting and require frequent replacement of abrasives, resulting in relatively high usage costs.

Sandblasting is commonly used for rust removal, oxide layer removal, deburring, and surface strengthening of metal surfaces. For example, in automobile manufacturing, sandblasting is used to remove welding slag and burrs after body welding; In the aerospace field, sandblasting is used to improve the fatigue resistance of parts. Sandblasting can remove release agents, oil stains, and burrs from plastic surfaces, while increasing surface roughness and improving coating adhesion.

The basic principle of sandblasting is to use compressed air or mechanical power to spray abrasive at high speed onto the surface of the workpiece. Through the impact and friction of the abrasive, impurities, oxide layers or old coatings on the surface are removed, while forming a uniform roughness on the surface. During sandblasting, the type, particle size, spraying speed, and angle of the abrasive will all affect the processing effect.