Silicon Carbide Graphite Crucible for Gold Melting 1600°C with 2.21-2.25 g/cm³ Density
Silicon Carbide Graphite (SiC-Graphite) crucibles are advanced composite ceramics engineered for high-temperature melting of precious metals, particularly gold, silver, and platinum. These crucibles combine silicon carbide and graphite through isostatic pressing and high-temperature sintering processes, creating a superior material that overcomes the limitations of pure graphite or SiC crucibles.
| Attribute | Value |
|---|---|
| Material | Silicon Carbide and Graphite |
| Maximum Working Temperature | 1600°C |
| Density | 2.21-2.25 g/cm³ |
| Shape | Cylindrical |
| Surface Finish | Smooth |
| Corrosion Resistance | Good |
| Thermal Conductivity | High |
| Place of Origin | Shandong, China |
The unique composite structure combines the best properties of both materials:
- Silicon Carbide (SiC): Provides exceptional hardness, mechanical strength, and thermal stability
- Graphite: Ensures superior thermal conductivity and thermal shock resistance
- Minor Additives: Including binders and anti-oxidants to enhance overall performance
- Extreme Temperature Resistance: Withstands temperatures up to 1600-1800°C with minimal thermal deformation
- Superior Thermal Conductivity: Enables rapid, uniform heat distribution, reducing melting time by 30-50% compared to clay-graphite crucibles
- Exceptional Thermal Shock Resistance: Survives direct quenching from hot to cold water without cracking
- Chemical Inertness: Resists reaction with molten gold, silver, or fluxes, preserving metal purity
| Metal Type | Max Temperature (°C) | Performance Benefit |
|---|---|---|
| Gold/Silver | 1,100 | Zero contamination • Minimal precious metal loss |
| Copper/Bronze | 1,300 | Resistance to CuO slag erosion |
| Aluminum Alloys | 900 | Prevents Al penetration • Flux corrosion resistance |
| Zinc/Tin/Lead | 750 | Longevity in low-melt applications |
Compatible with resistance furnace, induction furnace, biological particles furnace, gas furnace, coke oven, furnace oil, and gas furnace applications for melting:
- Bullion Production: High-yield melting of 1-100kg silver bars
- Jewelry Casting: Contamination-free melting for investment casting
- Metal Recycling: Corrosion resistance against metallic impurities (Cu, Zn, Pb)
- Continuous Operations: 24/7 furnace compatibility with minimal degradation
Produced by Qingdao Baidun Special Ceramics Technology Co., LTD., one of China's largest crucible manufacturers using advanced isostatic pressing technology. With a registered capital of 100 million RMB and covering 100,000㎡, the company maintains two brands: "Baidun" for Chinese markets and "J&J" for overseas markets.
Packing: Professional export packaging including wooden boxes, cardboard, cartons, ton bags, or custom packaging according to customer requirements.
Delivery Time: 10-45 days after order confirmation, depending on order quantity.
Q: What is the brand name?
A: J&J/Baidun
Q: Where is it manufactured?
A: Qingdao, China
Q: What is the minimum order quantity?
A: 1 piece
Q: What are the accepted payment terms?
A: TT/DP/LC
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