Product Features
The wide application of corundum saggers benefits from their outstanding properties:
1.High refractoriness: Operating temperature up to 1500–1830℃, suitable for high-temperature sintering.
2.Excellent corrosion resistance: Resists erosion from highly corrosive materials such as high-nickel ternary cathodes.
3.Good thermal shock resistance: Withstands rapid heating and cooling to ensure continuous production.
4.High mechanical strength and low creep: Maintains dimensional stability at high temperatures and reduces equipment failures.
Applications
1.Sintering of lithium battery cathode materials
2.Special ceramics & electronic ceramics: Used for calcining precision ceramics, magnetic materials, piezoelectric ceramics, and other powders.
3.Rare earth phosphors: Used for phosphor sintering in LED and display technologies.
4.Metal & alloy processing: Used in high-temperature forging, heat treatment, etc., to protect materials from contamination.
5.Wear-resistant ceramics & industrial components: Used for high-precision parts such as wear-resistant ceramic sheets, tube sockets, and circuit housings.
Product Parameters
|
Item |
Unit |
Typical Value |
|
Main Crystal Phase |
- |
Corundum (α-Al₂O₃) |
|
Al₂O₃ Content |
% |
95 / 99 / 99.5 |
|
Bulk Density |
g/cm³ |
≥3.50 |
|
Apparent Porosity |
% |
≤12 |
|
Cold Compressive Strength |
MPa |
≥800 |
|
Cold Bending Strength |
MPa |
≥50 |
|
Refractoriness Under Load |
℃ |
≥1650 |
|
Max Working Temperature |
℃ |
1600 |
|
Coefficient of Linear Thermal Expansion (RT ~ 1000℃) |
/K |
7.0×10⁻⁶ – 8.0×10⁻⁶ |
|
Thermal Shock Resistance (1100℃ ↔ water quenching) |
cycles |
≥20 |
Packaging: On-demand customization
Company Advantages
The company is ISO9001 certified, with independent intellectual property rights and national invention patented production processes.
We have a large production scale and industry-leading capacity, capable of meeting large-volume orders.
Our products are mainly sold to Guangdong, Jiangsu, Henan, Hebei, Northeast China and other regions, as well as overseas markets.
We hold a prominent position in the industry with strong market competitiveness and great development potential.
FAQ
Q: What is the maximum operating temperature?
A: High-purity corundum saggars can withstand continuous temperatures up to 1600°C–1700°C, making them ideal for advanced ceramics, magnetic materials, and high-grade powder sintering.
Q: How do you prevent deformation under heavy loads?
A: Our saggars are fired at ultra-high temperatures to achieve a dense, low-porosity structure with high creep resistance, ensuring dimensional stability even when stacked with heavy products.
Q: Do you offer custom shapes and sizes?
A: Yes. We support customization of rectangular, square, boat-shaped, and special geometric designs to fit specific kiln furniture systems and product requirements.
Q: How do they perform under thermal shock?
A: While corundum has moderate thermal shock resistance, our specialized formulations and controlled grain growth improve crack resistance during rapid heating and cooling cycles.
Q: What industries commonly use your corundum saggars?
A: They are widely used in advanced ceramics, electronic components, magnetic materials, lithium batteries, rare earth polishing powders, and high-temperature laboratory research.
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