VINACNC - Expert in Manufacturing Graphite Ingot Casting Moulds for Precious Metals

In the metal casting industry, especially for precious metals like gold and silver, or alloys like copper and aluminum, using a high-quality mould is a key factor in ensuring the purity and precise shape of the product. VINACNC is proud to offer the manufacturing service for graphite ingot casting moulds with superior features, meeting the most stringent industry requirements.

Technical Specifications, Materials, and Applications

• Material: The products are crafted from high-purity graphite. This material stands out for its excellent heat resistance, chemical corrosion resistance, and non-reactive nature with molten metals, which helps maintain the purity of the cast metal.

   

• Technical Properties:

  • Heat Resistance: Graphite can withstand temperatures of over 3000°C, making it ideal for casting metals with high melting points such as copper (1085°C), gold (1064°C), silver (961°C), and aluminum (660°C).

     

  • Tight Tolerances: The moulds are CNC machined to achieve precise tolerances, ensuring the final metal ingot has a perfect shape and size.

  • Smooth Surface: Graphite moulds have a naturally smooth surface, which allows the metal ingot to easily separate from the mould after cooling, and also results in a fine surface finish on the final product.

     

• Applications: Graphite ingot casting moulds are used for:

  • Casting Gold and Silver: Producing gold bars, silver bullion, or rough jewellery parts.

  • Casting Copper and Aluminum: Manufacturing copper and aluminum ingots for recycling or as raw materials for subsequent processing.

  • Laboratory and Industrial Use: Used in melting furnaces, metallurgy, and applications that require high thermal and electrical conductivity. 

Product Advantages

• High Purity: Graphite does not react with molten metals, ensuring the purity of the product after casting, which is especially important for gold and silver.

• Heat and Corrosion Resistance: The extremely high heat and corrosion resistance of graphite ensures a long mould lifespan and allows for multiple reuses.

• High Precision: Thanks to CNC machining, the casting moulds have absolute dimensional accuracy, creating uniform and standard-compliant metal ingots.

• Optimized Costs: The long lifespan and high production efficiency of the moulds help minimize investment and operational costs for our clients.

Post-Machining Product Inspection Process

1. Dimensional Inspection: We use digital calipers and other precision measuring tools to verify the dimensions of the graphite mould against the technical drawings.

2. Surface Finish Inspection: We conduct visual inspections and use specialized measuring devices to ensure the mould surface meets the requirements and is free of cracks or defects.

3. Functional Test: A test casting is performed with molten metal to evaluate the quality of the resulting ingot and the mould's release properties.

Packaging and Storage Process

• Cleaning: The mould is thoroughly cleaned to remove carbon dust and other impurities.

• Careful Packaging: The product is packed in a sturdy cardboard box or a wooden crate with foam to prevent impact and chipping during transport.

• Labeling and Instructions: The packaging is clearly labeled with product information, including the product code, dimensions, and usage/storage instructions.

• Storage: We recommend storing the mould in a dry, cool environment, away from heavy impacts, to maintain its best quality.

Contact Information:

• VINACNC - Precision CNC Machining Expert

• Hotline: +84 904609889

• Email: vinacnc.us@gmail.com

• WhatsApp/Zalo/Wechat: +84 904609889