
Ceramic Crucible / Boron Nitride Ceramic Evaporation Boat / Vacuum Aluminizing Film
Graphite crucibles for evaporative aluminum plating are generally used in groups, generally, 24 crucibles are one group.
Description
After effective optimization and improvement program, our company has made significant improvement and promotion in production efficiency and electrode regular power, ash content graphite, Vacuum furnace hot zone quality. We take improving enterprise economic efficiency as the core, technological innovation as the driving force, and the market as the guide. In the process of continuous struggle, our employees have gradually formed a common career goal and value orientation, and coalesced into a unique corporate culture.
Large Graphite Crucibles for Industrial-Scale Melting & Casting
Heavy-Duty Crucibles Tailored for Demanding Applications
At SHJ-CARBON, we specialize in large graphite crucibles engineered to meet the extreme conditions of high-temperature industrial operations. With customizable height, bottom diameter, top diameter, and wall thickness, our crucibles are ideal for heavy-load applications such as metal melting, alloy refining, and continuous casting.
Available in barrel, cylindrical, and conical shapes, these crucibles are designed for compatibility with a wide range of furnaces and workflows. Despite their size, each crucible remains lightweight and easy to install, offering both handling convenience and structural strength.
Products Description
| Melting Capacity | Recommended Model | Typical Dimensions (Diameter × Height) |
| 10–50kg | #30–#100 | Φ205–345mm × H265–388mm |
| 50–200kg | #150–#400 | Φ362–526mm × H429–661mm |
| >200kg | #500 and above | ≥Φ531mm × ≥713mm |
| Customized | ≥Φ1650mm |
Key Notes:
Dimensional Tolerance: All sizes allow ±5% variation due to manufacturing processes.
Capacity Scaling:
Small models (e.g., #30) suit laboratory/precision melting;
#500+ models align with industrial furnaces (e.g., 500kg aluminum melters use Φ785mm crucibles).
Customization: Non-standard dimensions (e.g., rectangular, tapered) require bespoke design.
Note: Match crucible dimensions to furnace chamber geometry to ensure thermal efficiency
Built to Withstand Extreme Heat & Stress
Our large graphite crucibles are capable of withstanding temperatures up to 1800°C in oxidizing atmospheres and up to 3000°C in vacuum or inert conditions. Even under prolonged exposure to extreme heat, they maintain structural integrity and resist cracking, warping, or erosion.
These crucibles are suitable for melting aluminum, copper, gold, silver, brass, and other non-ferrous metals. They are also used in glass and ceramic processing, where thermal uniformity is essential for product quality.
Key Performance Advantages
- High Thermal Conductivity: Enables even heat distribution and faster melting cycles
- Oxidation & Wear Resistance: Minimizes degradation and extends product life
- Exceptional Thermal Shock Resistance: Handles rapid heating and cooling without damage
- Custom Engineering: Shape, size, and coating can be tailored for your furnace and material
- Lightweight & Easy to Handle: Designed for industrial use without added operational burden

Fully Customizable Large Graphite Crucibles with End-to-End OEM Support
At SHJ-CARBON, we specialize in large graphite crucibles built for scale, precision, and long-term performance. Every crucible is fully customizable-from raw material grade to geometry, wall thickness, machined features, and surface treatments-to meet the specific demands of your melting process, furnace design, and metal type.
Whether you're expanding industrial capacity or fine-tuning alloy composition, our OEM customization service ensures that each large crucible integrates seamlessly into your operation. We don't just offer products-we deliver engineered solutions that support clean melts, thermal stability, and repeatable quality across every cycle. Reach out to our team today to explore how our custom large graphite crucibles can elevate your high-temperature process with precision and confidence.
We will continue to uphold the spirit of innovation, focus on industry applications, and provide better Ceramic Crucible / Boron Nitride Ceramic Evaporation Boat / Vacuum Aluminizing Film and services for the global industry, and create value for customers. We pursue the business philosophy of "passion and rationality, high-quality products based on the market; scientific and harmonious, innovative services to society". Our quality policy of "accuracy, excellence and continuous improvement" brings credibility to the quality of products and credibility to the market development.
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