A graphite crucible is a container used for melting and holding metals and other materials at high temperatures. Made primarily from graphite, these crucibles are known for their high thermal conductivity, resistance to thermal shock, and chemical inertness, making them ideal for various industrial processes. The graphite crucible factory is a manufacturing facility that specializes in producing graphite crucibles. Graphite crucibles are containers made primarily from graphite, which is a form of carbon. These crucibles are used in high-temperature applications, such as melting metals and other materials, due to their excellent thermal conductivity and resistance to high temperatures.

About Graphite Crucible Service

Materials:

Graphite: The primary material used for making crucibles. It can be natural or synthetic graphite.

Binders: Materials like clay or resin that help hold the graphite particles together.

Refractory Materials: Additional materials may be added to improve the crucible's performance under high temperatures.

Manufacturing Process:

Mixing: The raw materials are mixed together to create a uniform blend.

Forming: The mixture is pressed into molds to shape the crucibles.

Drying: The formed crucibles are dried to remove any moisture.

Curing: The crucibles are heated in a kiln to harden the binders and ensure structural integrity.

Graphitization: In some cases, the crucibles undergo graphitization, which involves heating them to very high temperatures to convert amorphous carbon into graphite.

Finishing: The finished crucibles may be coated or polished to improve their surface quality and durability.

Quality Control:

Inspection: The crucibles are inspected for defects such as cracks or porosity.

Testing: Samples are tested for thermal shock resistance, strength, and other properties.

Product Varieties:

Sizes and Shapes: Graphite crucibles come in various sizes and shapes depending on the application.

Special Coatings: Some crucibles may be coated with refractory materials or ceramics to enhance their performance.

Graphite Crucible Applications:

Metallurgy: Metal casting crucible is used in the melting and refining of metals such as gold, silver, copper, and aluminum.

Glass Industry: For melting glass and other materials.

Laboratory Use: In research and development for high-temperature experiments.

Graphite Crucible Temperature Range

Operating Temperature: Graphite crucibles can typically handle temperatures up to 2500°C (4532°F) in an inert atmosphere. They are widely used in applications where temperatures range from 1200°C to 1600°C (2192°F to 2912°F), depending on the specific metal being processed.

Melting and Boiling Points: The graphite material itself has a melting point around 3650°C (6602°F) and a boiling point over 4000°C (7232°F), though crucibles are generally not used at these extreme temperatures due to practical considerations.

Graphite crucibles are capable of handling extremely high temperatures, typically up to 2500°C (4532°F) in inert atmospheres. Their performance can be influenced by the surrounding atmosphere, material purity, thermal conductivity, thermal shock resistance, and the specific metal being processed.