Aluminum titanate ceramic nozzles are specialized components made from aluminum titanate (Al₂TiO₅), designed to precisely control the flow of molten non-ferrous metals, particularly aluminum and its alloys, during casting processes. These nozzles feature excellent thermal shock resistance, low thermal conductivity, and superior non-wettability to molten metals, which helps prevent clogging and metal adhesion. Their dimensional stability and corrosion resistance make them ideal for high-temperature, high-precision applications in low-pressure die casting, gravity casting, and various foundry operations.
Properties
Volume Density |
3.3-3.5 g/cm3 |
Bending Strength |
1.5 MPa |
Compressive Strength |
30-50 MPa |
Operating Temperature |
≤1400℃ |
Porosity |
<8% |
CTE |
(0.5-1.5)*10-6℃ |
Thermal Conductivity (800℃) |
0.86 W/M·K |
Dimensions |
Customized |
*The above product information is based on theoretical data. For specific requirements and detailed inquiries, please contact us.
Low-pressure die casting (LPDC): Direct and regulate molten aluminum flow into molds with high precision and minimal turbulence.
Gravity casting: Control molten metal flow during gravity-fed casting to ensure consistent filling and reduce defects.
Automotive casting: Used in manufacturing aluminum parts such as engine blocks, cylinder heads, and wheels.
Foundry operations: Act as flow-control components in systems handling non-ferrous metals.
Molten metal filtration systems: Integrated with filters to guide and stabilize metal flow while minimizing inclusions and air entrapment.
Continuous casting equipment: Provide stable metal flow in continuous or semi-continuous casting lines, improving uniformity and reducing downtime.
High-temperature pouring systems: Suitable for precise dosing and non-reactive contact with molten aluminum.
Products are packaged in customized cartons or wooden crates based on size. Small items are securely packed in polypropylene (PP) boxes, while larger products are placed in custom wooden crates. Appropriate cushioning materials are used to ensure safe transportation.
Testing includes:
Chemical composition analysis to verify purity and compliance.
Mechanical property testing such as tensile strength, yield strength, and elongation.
Dimensional inspection to ensure thickness, width, and length meet specifications.
Surface quality inspection to detect defects like scratches, cracks, or inclusions through visual and ultrasonic methods.
Hardness testing to confirm uniformity and mechanical reliability.
Q1: What are aluminum titanate ceramic nozzles?
A1: High-performance ceramic components designed to control and direct molten non-ferrous metals, especially aluminum, in casting and foundry processes.
Q2: What are the main advantages of aluminum titanate nozzles?
A2: They offer excellent thermal shock resistance, low thermal conductivity, strong resistance to molten aluminum wetting, high dimensional stability at elevated temperatures, and corrosion resistance.
Q3: Where are these nozzles typically used?
A3: Commonly used in low-pressure die casting, gravity casting systems, automotive aluminum part production, molten metal filtration and flow control, and foundry pouring equipment.
Q4: How do aluminum titanate nozzles compare to traditional metal or alumina nozzles?
A4: They provide superior resistance to thermal shock and aluminum adhesion, resulting in longer service life and better performance in high-temperature environments.
Property / Application | Alumina (Al₂O₃) | Aluminum Titanate (Al₂TiO₅) | Aluminum Nitride (AlN) |
---|---|---|---|
Thermal Conductivity | Moderate (~20-30 W/m·K) | Low (~1-2 W/m·K) | Very High (~140-180 W/m·K) |
Thermal Expansion Coefficient | Moderate (~7-8 ×10⁻⁶/K) | Very Low (~1-2 ×10⁻⁶/K) | Close to Silicon (~4.5 ×10⁻⁶/K) |
Thermal Shock Resistance | Moderate to Good | Excellent | Moderate |
Electrical Insulation | Excellent | Good | Excellent |
Mechanical Strength | High | Moderate | High |
Corrosion Resistance | Excellent | Excellent | Good |
Main Applications | Structural ceramics, insulators, cutting tools | Riser tubes, molten metal handling parts | Heat sinks, high-power electronics, substrates |
Aluminum Non-Wettability | Poor | Excellent | Moderate |
Cost | Relatively Low | Moderate | High |
Shapes and dimensions: Complex three-dimensional shapes, wide size range, including cranked or angled designs.
Tolerance: From fine to coarse tolerances; precision machining available on request.
Surface and structural features: Available with or without coatings (such as boron nitride), grooves, or drillings.
Special requirements: Custom geometries for specific casting systems, compatibility with high-precision or automated processes, and options for enhanced thermal or corrosion resistance.
Aluminum titanate ceramic nozzles combine excellent thermal properties, durability, and chemical resistance, making them ideal for demanding metal casting and foundry applications.