Kiln supplies such as sintering boxes and crucibles
Quartz crucible
The quartz ceramic crucible is made from high-purity fused quartz raw material and formed using advanced manufacturing techniques. It features high density and excellent acid- and alkali-resistance. In high-temperature environments, it does not contaminate the materials being processed, prevents cracking during charging, and exhibits outstanding thermal shock resistance, making it suitable for repeated, continuous use.
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Product Details
The quartz ceramic crucible is made from high-purity fused quartz raw material and formed using advanced manufacturing processes. It features high density and excellent acid- and alkali-resistance. In high-temperature environments, it does not contaminate the materials being processed, prevents cracking during charging, exhibits outstanding thermal shock resistance, and can meet the demands of repeated, continuous use.
1. Product Features
• Exceptionally high thermal resistance: The softening point is close to 1700℃, and the short-term operating temperature can reach up to 1450℃, making it ideal for high-temperature experiments and processing.
• Excellent thermal stability: extremely low coefficient of thermal expansion, capable of withstanding drastic temperature changes without easily cracking (good thermal shock resistance).
• Excellent chemical inertness: Highly resistant to corrosion by most acidic and neutral substances.
2. Physicochemical indicators
| Project | Unit | Parameter |
| Silicon dioxide | % | ≥99.5 |
| Other | % | <0.5 |
| Volumetric density | g/cm3 | ≥1.9 |
| Room-temperature flexural strength | Mpa | ≥35 |
| High-temperature flexural strength | Mpa | ≥28 |
| Room-temperature compressive strength | Mpa | ≥80 |
| Coefficient of thermal expansion | ×10 -6 K -1 | ≤0.6 |
| Apparent porosity | g/cm3 | ≤13 |
| Thermal conductivity | W/m·℃ | 0.66 |
3. Application Fields
• Semiconductor industry: Used in the manufacturing process of single-crystal silicon wafers as a crucible for pulling single-crystal silicon.
• Photovoltaic solar industry: smelting of solar-grade monocrystalline silicon and polycrystalline silicon
• Optics and Glass Industry: Used for melting and purifying special optical glasses, glass fibers, and more.
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