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Super Wear-resistant Alumina Al₂O₃ Ceramic Plug for High-end Industrial Manufacturing
Ceramic Plugs are sealing and flow control components made with high-performance ceramic materials. They are widely used in metallurgical casting, chemical reactions, high-temperature kilns, and precision instruments. With their excellent high-temperature resistance, wear resistance, corrosion resistance, and thermal shock resistance, they are gradually replacing traditional metal plugs and becoming irreplaceable key sealing and flow control components under extreme working conditions.
Super Wear-resistant Alumina Al₂O₃ Ceramic Plug for High-end Industrial Manufacturing
Product Description
Al₂O₃ Ceramic Plugs are core components in industrial applications, combining high insulation, high temperature resistance, wear resistance, corrosion resistance, and high precision. Typically made of 99% alumina ceramic, they can be customized to fit various industries, including electronics, semiconductors, chemicals, and textile machinery, for insulation sealing, fluid plugging, and wear protection. Compared to traditional metal or plastic plugs, their service life under harsh conditions can be extended several times, while also offering low maintenance costs and stable performance. This makes them a preferred solution for replacing traditional materials and improving equipment reliability in high-end industrial manufacturing.
Product Specifications (Can be customized)
Key Product Features
1.High Insulation: Room temperature resistivity ≥10¹⁴ Ω·cm, suitable for high voltage/electrical insulation applications.
2. High Temperature Resistance: Long-term operating temperature up to 1600℃, melting point 2050℃.
3. High Wear Resistance/Low Friction: Mohs hardness 9, wear resistance 10-20 times that of stainless steel.
4. Chemical Stability: Resistant to acid and alkali corrosion, suitable for chemical and corrosive fluid applications.
5. Low Thermal Expansion: Linear expansion coefficient approximately 7.2×10⁻⁶/℃, suitable for applications with large temperature differences.
6. High-Precision Molding: Enables mass production of complex structures with high tolerances.
Product Parameters
| Performance Indicators | Unit | 95% Alumina Ceramics | 99% Alumina Ceramics (recommended) | Remark |
| Alumina content | % | ≥95 | ≥99.7 | The higher the purity, the stronger the high temperature resistance and insulation. |
| Density | g/cm³ | 3.6-3.7 | 3.9-3.98 | Higher density results in better compactness and wear resistance. |
| Mohs Hardness | - | 8.5 | 9 | Second only to diamond, with excellent wear resistance. |
| Flexural Strength | MPa | 280-320 | 350-400 | Bending resistance, suitable for mechanical stress scenarios |
| Compressive Strength | MPa | 1800-2200 | 2500-3500 | With strong resistance to compression, it is suitable for high-pressure working conditions. |
| Coefficient of linear expansion (20-1000℃) | 10-6/℃ | 7.5-8.0 | 7.0-7.5 | Low thermal expansion, suitable for scenarios with large temperature differences |
| Thermal Conductivity | W/(m ·K) | 20-25 | 30-35 | It has better thermal conductivity than plastic, making it suitable for heat dissipation scenarios. |
| Volume Resistivity (room temperature) | Ω ·cm | ≥10¹³ | ≥10¹⁴ | High insulation, suitable for electrical/high voltage scenarios |
| Long-term Operating Temperature | ℃ | 1200-1400 | 1500-1600 | Maintains stable performance even at high temperatures |
| Acid and Alkali Corrosion Resistance | - | good | Excellent | Suitable for chemical and corrosive fluid environments |
| Surface Roughness | Ra | ≤0.8μm | ≤0.2μm (after polishing) | High gloss finish can be customized to your needs. |
Remark:the product in the image is 99% Alumina Ceramic Plugs.
Product Applications
Precision Manufacturing Process
The production of high-quality ceramic plugs requires a rigorous quality control process:
1.Raw Material Control: high-purity ceramic powder, with strict control over particle size distribution and impurity content.
2.Precision Forming: isostatic pressing, injection molding, or vacuum filtration molding.
3.Precision Machining: diamond grinding to the required dimensional accuracy.
4.Surface Treatment: ceramic glaze coating to prevent external oxidation; special coating to enhance slag corrosion resistance.
5.Quality Inspection: Nnon-destructive testing to ensure no internal defects; strict control of dimensional tolerances.
Selection and Usage Recommendations
1.Key Selection Points
(1)Define Operating Parameters: Operating temperature, medium type, pressure rating, mechanical load
(2)Material Selection:
Extreme high temperature (>1000℃) + strong corrosion → Silicon nitride
High cost-effectiveness + general wear resistance → Alumina
High toughness + impact resistance → Zirconia
Thermal insulation + non-ferrous metal casting → Ceramic fiber/oxosilon
(3)Certifications and Standards: Confirm that the product has passed ISO, CE, and other relevant quality certifications
(4) Customization Services: Choose suppliers that can provide processing and customization based on samples and drawings.
2.Usage and Maintenance
(1)Installation Guidelines: avoid hard impacts; it is recommended to use a special tool (such as a hammer block) to prevent structural breakage.
(2)Regular Inspection: observe surface wear and corrosion, and replace promptly.
(3)Storage Conditions: avoid humid environments to prevent moisture absorption from affecting performance.
Our workshop
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CNC Workshop |
Testing Room |
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Surface grinding Workshop |
Sintering Workshop |
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Circular Grinding Workshop |
Injection molding Machine Workshop |
Why choose us?
1.Customized R&D, rather than standard product adaptation
2.Deep control of materials science：Material Selection Based on Needs，Microstructure Optimization，Batch Consistency
3.Precision machining capability：Flatness can reach 0.001mm, parallelism 0.002mm, and roughness Ra 0.1μm.
FAQ
Q1: What products does your company offer?
We specialize in high-performance ceramics such as alumina and silicon nitride, providing insulators, structural components, wear-resistant parts, and customized solutions.
Q2: Can you customize non-standard parts?
Yes. We support processing based on provided drawings and collaborative technical development, offering a full-process service from design to mass production.
Q3: What about accuracy and delivery time?
Standard tolerance ±0.05mm, precision grade ±0.01mm; samples 7-15 days, bulk orders 20-30 days.
Q4: Main application areas?
Power, electronics, machinery, chemical, and aerospace industries.
Q5: Quality assurance measures?
Full-process quality inspection, providing material reports and performance test data, supporting third-party certification and testing.
Q6: Do you provide technical support?
We provide professional support such as material selection consultation, design optimization, and failure analysis.
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