95% Alumina Ceramic Nozzles 99% Alumina Ceramic Spray Nozzles Sandblasting Nozzles

Alumina ceramic nozzles are wear-resistant components made from high-purity alumina (95%-99.9%Al₂O₃) ceramic materials. They feature precisely designed flow channels for directing, controlling, and atomizing liquid, gas, or gas-solid mixtures (such as those containing abrasives).

This is one of the most widely used ceramic components in industrial wear resistance and a powerful solution for addressing wear problems.

Comparison with Silicon Carbide Nozzles:

• Alumina Ceramic Nozzles: Meet over 90% of industrial wear resistance requirements and are the most cost-effective and widely used option.
• Silicon Carbide Ceramic Nozzles: Harder and more wear-resistant, but also more expensive. They are typically only considered an upgrade option for extremely severe wear situations (such as long-term continuous sandblasting)

Alumina ceramic nozzles are a prime example of "winning with materials" in the industrial field. By leveraging the material's inherent ultra-high hardness, they perfectly address the core pain point of wear. While their initial purchase cost is higher than that of ordinary nozzles, the comprehensive economic benefits of their extremely long service life and stable performance make them a standard feature and a wise choice for cost reduction and efficiency improvement in many industries. When you need to address wear, they are almost always the preferred solution.

High-speed abrasive particles can quickly wear out metal or plastic nozzles. The core value of alumina ceramic nozzles lies in:

1. Extreme Wear Resistance (their most important advantage)

• Performance: Alumina ceramic boasts a Rockwell hardness of HRA 85-90, making its wear resistance dozens of times greater than that of high-chromium cast iron and over a hundred times greater than that of ordinary carbon steel.
• Value: They offer an extremely long service life in extreme abrasive conditions such as sandblasting and shot blasting, significantly reducing downtime, replacement frequency, and maintenance costs.

2. Excellent Corrosion Resistance

• Performance: They offer excellent resistance to most acids, alkalis, solvents, and other chemical media.
• Value: They can be used to spray corrosive chemical liquids (such as acids and pesticides) or operate in highly corrosive environments without rusting.

3. High-Temperature Resistance

• Performance: They can withstand long-term operation in temperatures exceeding 1500°C.
• Value: They are suitable for applications such as high-temperature spray drying and boiler oil nozzles.

4. Smooth inner surface, low flow resistance

• Performance: Precision polishing results in an extremely smooth inner surface finish.
• Value: Reduces pressure loss, improves spray efficiency, and maintains a stable flow rate and spray pattern.

5. High cost-effectiveness

• Performance: While the unit price is higher than metal nozzles, its exceptionally long service life makes it the lowest overall cost of ownership.
• Value: Over the entire lifecycle, it is a more economical choice.

Alumina ceramic nozzles are divided into several types according to their spray shape and internal structure to suit different applications:

Type	Features and Applications
Venturi Nozzle	Highest efficiency, used for sandblasting/shot blasting. Air and abrasive are mixed internally, forming a high-speed, uniform jet.
Straight Bore Nozzle	These nozzles have a simple structure and are used for high-pressure cleaning and water spraying.
Fan Spray Nozzle	This type of nozzle produces a flat fan-shaped mist pattern and is used for cleaning, cooling, surface treatment, and coating.
Hollow Cone Nozzle	This type of nozzle produces a circular mist pattern and is used for humidification, gas cooling, and spray drying.
Full Cone Nozzle	This type of nozzle produces a full circular mist pattern and is used for cleaning, fire protection, and chemical reactions.

Alumina ceramic nozzles and sandblasting spray nozzles are primarily used in the following industries:

Sandblasting/Shot Peening (Core Application)

• Applications: Rust removal, cleaning, roughening, and strengthening (stress peening) of metal surfaces.
• Requirement: This is an application requiring the highest wear resistance. Alumina Venturi nozzles are standard.

Water Jet Cutting

• Applications: Ultra-high-pressure waterjet equipment uses abrasives (such as garnet sand) mixed with pure water for cutting.
• Requirement: The nozzle must withstand the extreme wear of high-speed abrasive slurries.

Spray Drying

• Applications: The chemical, food, and pharmaceutical industries atomize and dry solutions or suspensions into powders.
• Requirement: Wear and corrosion resistance, ensuring uniform and stable atomization.

Air Atomization Spraying

• Applications: Spraying coatings, paints, glazes, insulating varnishes, etc.
• Requirement: Solvent and wear resistance, ensuring precise spray patterns.

High-Pressure Cleaning

• Applications: Cleaning industrial equipment, vehicles, and floors.
• Requirement: Wear resistance, able to withstand high-pressure water erosion.

Agricultural sprinkler irrigation

• Application: Spraying pesticides, fertilizers, and other liquids.
• Requirements: Chemical resistance and long service life.