Product Overview
High-purity graphite ingot molds are widely used for casting gold, silver, copper, aluminum, and other non-ferrous metals. With excellent thermal conductivity, high temperature resistance, and easy release properties, graphite molds produce smooth, clean ingot surfaces with minimal finishing required. Our graphite ingot molds are precision machined from isostatic graphite for consistent wall thickness and dimensional accuracy.
Key Features
- Excellent thermal conductivity for fast, uniform solidification
- Smooth surface finish produces clean, bright ingot surfaces
- Easy release - ingots separate cleanly without sticking
- High temperature resistance for molten metal up to 1500°C
- Long service life with proper care and maintenance
- Custom sizes and shapes available per customer requirements
- Suitable for gold, silver, copper, aluminum, brass and more
Technical Specifications
| Parameter | Unit | Standard Grade | Premium Grade |
|---|---|---|---|
| Material | - | Extruded Graphite | Isostatic Graphite |
| Bulk Density | g/cm³ | 1.65 | 1.80 |
| Compressive Strength | MPa | 45 | 70 |
| Thermal Conductivity | W/(m·K) | 80 | 120 |
| Max Working Temp | °C | 1200 | 1500 |
| Surface Finish | - | Machined | Fine Machined |
| Ingot Capacity | kg | 1 - 50 | 1 - 100 |
Applications
- Gold and silver bullion casting
- Copper and copper alloy ingot production
- Aluminum and aluminum alloy casting
- Brass and bronze ingot molds
- Platinum and precious metal casting
- Recycling and refining operations
- Jewelry making and precious metal processing
Why Choose Jincheng Graphite Ingot Molds?
We manufacture graphite ingot molds for precious metal casters, refiners, and jewelry producers worldwide. Our molds are precision machined to ensure consistent dimensions and smooth surface finish. We offer standard sizes for common ingot weights as well as fully custom designs. With competitive factory pricing and reliable quality, we help our customers achieve better casting results and lower production costs.
FAQ
Q: How do I prepare the graphite mold before pouring?
A: Preheat the mold to 200-300°C before pouring to prevent thermal shock and improve surface finish. Some casters also apply a thin coating of boron nitride spray for easier release and longer mold life.
Q: What is the typical lifespan of a graphite ingot mold?
A: With proper preheating and care, a graphite ingot mold can last for hundreds of pours. The lifespan depends on the metal being cast, pouring temperature, and maintenance practices. Higher temperature metals like platinum will reduce mold life compared to aluminum.
Q: Can you make custom ingot shapes and sizes?
A: Yes, we specialize in custom graphite molds. Please provide your drawings or describe your requirements, and we will manufacture molds to your exact specifications, including custom cavities, handles, and sprues.
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