Customized Graphite silicon carbide crucible

Graphite crucible has become an important part of non-ferrous metal casting due to its unique natural flake graphite and binder components. This composition provides them with several advantages, including high thermal conductivity, resistance to high temperatures, good thermal stability, and lack of reaction with molten metal. However, they are easily oxidized in high-temperature, strongly oxidizing atmospheres, which can significantly shorten their service life. To alleviate this problem, some graphite crucibles are now equipped with multiple layers of glaze on their surface to enhance their corrosion resistance and prevent graphite from oxidizing.

Main features:

1. High thermal conductivity: Using high thermal conductivity materials such as graphite to reduce melting time.
2. Thermal shock resistance: It has strong thermal shock resistance and is not easy to break when heated or cooled rapidly.
3. High temperature resistance: can withstand temperatures from 1200 to 1650°C.
4. Corrosion resistance: It can resist the corrosion of molten metal.
5. Mechanical impact resistance: It has a certain mechanical impact strength during metal pouring.
6. Anti-oxidation: Treated to minimize oxidation, thereby minimizing oxidative consumption.
7. Anti-adhesion: The non-adhesion properties of graphite reduce the penetration and adhesion of molten metal.
8. Minimum metal contamination: Contains the least impurities, resulting in the least metal contamination.
9. Slag resistance: It shows good resistance to the influence of slag and flux.

advantage:

1. Excellent crack resistance, corrosion resistance and oxidation resistance: 5-10 times that of ordinary graphite crucibles.
2. Shortened melting time, good heat transfer, high thermal conductivity, and energy saving: 2/5 to 1/3 of energy can be saved.
3. Long service life: When used according to the company’s operating requirements, a 6-month warranty is provided from the date of use. If product quality issues are confirmed, free replacement or discounts may be provided.
4. Improve efficiency: reduce downtime and costs.

In addition, silicon carbide graphite crucibles add different amounts of silicon carbide particles to the raw materials, such as 50% or 24%, and can be customized according to customer requirements.

Performance:

• Standard parameters: test data
• Temperature resistance: ≥1630°C, actual: ≥1635°C
• Carbon content: ≥38%, actual: ≥41.46%
• Apparent porosity: ≤ 35%, actual porosity: ≤ 32%
• Bulk density: ≥1.6g/cm3, actual: ≥1.71g/cm3

In summary, graphite crucibles play a vital role in the metal casting process, providing superior thermal and chemical properties that contribute to efficient and reliable metal casting operations.