This product is a high-purity graphite ingot mold specifically designed for casting standard gold bars and ingots. Engineered for use with vacuum/inert gas casting machines, it provides a stable and efficient molding solution for precious metal refining, purification, and standard ingot production, aiding in the improvement of surface finish and batch consistency.
Detailed Product Advantages
- Premium Material Ensures Ingot Purity The mold is manufactured from a specialty high-purity graphite with extremely low ash content and high chemical stability. It effectively resists erosion and adhesion during the high-temperature melting of gold and other precious metals, thereby minimizing the risk of contamination from the mold material itself. This helps safeguard the fineness of the cast ingot.
- Excellent High-Temperature Resistance & Thermal Stability The product can withstand prolonged operation at temperatures up to 1600°C, with a higher short-term peak tolerance. Its low coefficient of thermal expansion ensures remarkable dimensional stability and structural integrity throughout repeated thermal cycling (melting and cooling), contributing to a longer service life.
- High Density & Precision Machining Through isostatic pressing and high-temperature graphitization, the mold achieves a material density of 1.80 g/cm³ or higher, resulting in a solid, fine-grained structure. Combined with precision CNC machining, this guarantees accurate cavity dimensions and smooth inner walls. This not only facilitates the production of gold ingots with sharp edges and a clean surface but also allows for smooth release after casting.
- Uniform Thermal Conductivity for Superior Results Graphite offers favorable thermal conduction properties. During casting, heat is transferred rapidly and evenly through the mold to the molten metal, promoting controlled directional solidification. This helps reduce internal defects such as shrinkage porosity, supporting the production of gold bars with a denser microstructure and a more uniform, flatter appearance.
Typical Applications
- Production of standardized precious metal ingots (e.g., 1kg, 500g gold bars).
- Casting following the recovery and refining of gold, silver, and other precious metals.
- Producing high-quality sample ingots in laboratory or small-batch production settings.
Usage Note
For best results and to prolong mold life, appropriate pre-heating before initial use is recommended. Operation under vacuum or a protective atmosphere is ideal. Please refer to the supplied technical documentation or consult our technical team for specific pre-heating procedures and maintenance advice.
We focus on providing reliable and consistent tools for precious metal processing. This product description is strictly based on its objective technical parameters. We are committed to being a trustworthy component in your manufacturing process. Please contact us for more detailed specifications or to discuss customized solutions based on your specific requirements.
