Crucible of Producing Sic Graphite Crucibles Melting Copper Crucible Silicon Carbide Graphite Crucible for Copper Alloys

A Silicon Carbide Graphite (SiC-Graphite) Crucible is a premium refractory vessel engineered for high-performance melting of demanding metals like copper, brass, bronze, and other copper alloys. Combining the strengths of silicon carbide (SiC) and graphite, it delivers unmatched durability and efficiency in harsh foundry environments.

Formulated with a robust matrix of silicon carbide (SiC) - renowned for extreme hardness, high-temperature strength, oxidation resistance, and thermal shock resilience - bonded with high-purity graphite for superior thermal conductivity and lubricity. This synergy creates a crucible far exceeding the capabilities of traditional clay-graphite types.

• Exceptional Thermal Stability: Withstands the high temperatures (exceeding 1100°C) required for gold melting without deformation or cracking, even under rapid thermal cycling.
• Superior Oxidation Resistance: Highly resistant to oxidation in air at elevated temperatures, protecting the crucible integrity and minimizing contamination of the precious metal melt.
• High Thermal Conductivity: Ensures rapid and uniform heat distribution for efficient and energy-saving gold melting operations.
• Excellent Chemical Inertness: Demonstrates minimal reactivity with molten gold and common fluxes, preserving gold purity and minimizing metal loss through slag formation or crucible attack.

While copper melts at ~1085°C, processes like superheating for casting fluidity, holding large batches, or melting high-melting-point alloys (e.g., copper-nickel) often require temperatures well above 1200°C. The 1600°C rating ensures:

• Safe operation under peak loads and occasional overtemperature events.
• Sufficient headroom for process flexibility and optimization.
• Long-term structural integrity at typical working temperatures.

Ideal for foundries, jewelers, and metal casting operations melting copper, brass, bronze, and other non-ferrous metals in induction furnaces, fuel-fired furnaces, or resistance furnaces where high performance and crucible longevity are critical.

• Copper foundries & refineries
• Bronze sculpture casting
• Electrical component manufacturing
• Heat exchanger tube production
• Coinage/bullion minting

Qingdao Baidun Special Ceramics Technology Co., LTD.(Qingdao Baidun) is located in the SCO Demonstration Area, Qinadao, China. Qinadao Baidun and it's subsidiaries specializes in the manufacture of crucibles for non-ferrous metal smelting, refractory products for continuous casting and alumina grinding ball. It has a registered capital of 100milion RMB and covers an area of 100,000㎡.

Qinadao Baidun has two brands, "Baidun" and "J&J", which are respectively for Chinese and overseas markets. Qingdao Baidun is one of the largest crucible manufacturers in China that uses isostatic pressing technology to produce silicon carbide graphite crucibles and clay graphite crucibles.

J&J/Baidun Crucible is a top-quality product made in China, known for its high temperature resistance, chemical resistance, and durability. Composed of high pure materials such as SiC and clay, this crucible is designed for laboratory applications requiring reliable performance under extreme conditions.

Packing: Use professional export packaging, wooden box or wooden box packaging, cardboard, carton, ton bag, or packaging according to customer requirements.

Delivery time: 10-45 days after confirming the order, the specific delivery date should be determined according to the and order quantity.