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There are various types of sand used in sandblasting machines. Depending on the needs and characteristics of the workpiece material, the following common abrasive materials can be selected.

Sandblasting machines use a variety of sands. Depending on the needs and characteristics of the workpiece material, the following common abrasive materials can be selected: **Garnet** Garnet is a red, wear-resistant abrasive material, mainly composed of aluminum oxide, with a Mohs hardness of about 8.0. It has high hardness and wear resistance, suitable for sandblasting rust removal, cutting, grinding and polishing. Garnet's special axial crystal structure allows it to form new particle sizes after crushing, enabling reuse. **Silica Sand** Silica sand is mainly composed of silicon dioxide and has high hardness, wear resistance and corrosion resistance. It is suitable for removing heavy paint and rust, often used in sandblasting processing of ships, railway vehicles, buildings and stone. **Steel Grit and Steel Shot** Steel grit and steel shot are man-made metal abrasives with high hardness and strong impact force, especially suitable for deep cleaning and finishing of workpiece surfaces. **Glass Beads and Glass Grit** Glass grit is made from recycled glass, has moderate hardness and good gloss, suitable for decorative sandblasting. Glass beads are round and without sharp edges, often used for matte surface treatment of stainless steel products and mold cleaning. **Zirconia Sand** Zirconia sand is a high-temperature resistant abrasive material, suitable for workpieces with high surface quality requirements, especially in situations with strict precision and smoothness requirements. **Silicon Carbide** Silicon carbide is divided into natural and artificial types. It has a good crystal form and retains sharp edges after crushing, suitable for efficiently removing rust and dirt from the workpiece surface. It is often used for rust removal and polishing of metal surfaces of aircraft, ships, and automobiles. **Brown and White Fused Alumina** Alumina series abrasives have high hardness and strong grinding force. Brown fused alumina is often used to remove hardened coatings from materials such as stainless steel and alloy steel, while white fused alumina is used for polishing and deburring precision parts. **Iron Ore Sand** Iron ore sand is mainly composed of iron oxide, has high hardness and good toughness, and is often used in metal surface treatment in the steel and aerospace industries. **Copper Ore Sand** Copper ore sand is matte black or bright black in color and is often used in sandblasting operations of large equipment such as ship rust removal. It is suitable for use in open spaces. The selection of appropriate sandblasting abrasive materials requires consideration of factors such as the physical properties of the abrasive material, work requirements, workpiece material, and cost budget.

2025-03-19

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Why choose boron carbide?

Boron carbide (B4C) sandblasting nozzles offer the longest lifespan compared to materials such as tungsten carbide, aluminum oxide, and iron. The wear resistance of boron carbide material is 5 to 10 times that of tungsten carbide and 3 to 5 times that of silicon carbide.

2025-03-18

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How to use a sandblasting machine

A sandblasting machine is a widely used surface treatment device. Its usage varies depending on the type (e.g., liquid sandblasting machine, dry sandblasting machine, open sandblasting machine, etc.) and specific needs. Below are the basic steps and precautions for using a sandblasting machine: 1. Preparation Equipment Inspection: Ensure that the power, air source, and water source (if applicable) of the sandblasting machine are correctly connected, and check if all parts of the equipment (such as nozzles, pipes, filters, etc.) are in good condition. Abrasive and Liquid Preparation: Select appropriate abrasives (such as quartz sand, aluminum oxide, etc.) and liquids (if applicable) according to the processing needs, and pour them into the machine. Protective Equipment: Wear protective glasses, dust masks, gloves, and earplugs before operation to ensure operational safety. 2. Equipment Adjustment Nozzle Selection and Adjustment: Select the appropriate nozzle according to the processing needs, and adjust its angle and distance to ensure that the sandblasting medium can evenly cover the workpiece surface. Pressure Adjustment: Adjust the pressure of the sandblasting machine according to the type of abrasive and nozzle specifications to avoid surface damage caused by excessive pressure. 3. Start Sandblasting Operating Techniques: After starting the sandblasting machine, keep the spray gun at a 45-degree angle to the workpiece surface, maintain a distance of 20-30 centimeters, and move the spray gun evenly to avoid local wear or missed spraying. Layered Processing: For large or complex-shaped workpieces, sandblasting can be done in layers, processing layer by layer to ensure uniformity. 4. Completion and Maintenance Equipment Shutdown: After processing, turn off the power and air source of the sandblasting machine, and press the emergency stop button (if applicable). Cleaning and Maintenance: Thoroughly clean the sandblasting machine, remove residual abrasives and liquids, regularly check and replace consumables (such as nozzles, filters, etc.) to extend the service life of the equipment. 5. Precautions Safe Operation: Strictly follow safety regulations and avoid operating the sandblasting machine without protective measures. Environmental Cleanliness: Keep the work area clean, promptly clean up waste generated during sandblasting, and reduce safety hazards. Regular Maintenance: Regularly maintain and service the sandblasting machine to ensure that the equipment is always in good condition. By following the above steps and precautions, you can safely and efficiently use the sandblasting machine to achieve the desired surface treatment effect.

2025-03-18

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