Carbon Bonded Silicon Carbide Crucible

Carbon Bonded Silicon Carbide Crucibles Detailed specifications

material ingredient:

1. Silicon carbide (SiC): high hardness, high thermal conductivity, and excellent corrosion resistance.

2. Combined carbon: Enhance the mechanical strength and thermal shock resistance of the crucible.

Customizable sizes:

temperature range:

1. Operating temperature: 800°C - 1600°C

2. Instantaneous maximum temperature resistance: 1800℃

Thermal Conductivity:

1. Thermal conductivity: 90 - 120 W/m·K

2. Thermal expansion coefficient: 4.0 - 5.0×10^-6/°C

Mechanical strength:

1. Bending strength: 25-35MPa

2. Compressive strength: 90-110MPa

Chemical resistance:

1. Excellent oxidation resistance, suitable for oxidizing atmosphere.

2. Excellent acid and alkali corrosion resistance, suitable for various smelting processes.

Detailed description

Manufacturing process:

1. Made of high-purity silicon carbide and composite carbon materials, refined through advanced isostatic pressing and high-temperature sintering processes to ensure the density and uniformity of the crucible.

2. The surface has undergone special anti-oxidation treatment to improve the service life and performance stability of the crucible.

Use and maintenance:

1. It needs to be preheated before first use and gradually heated to the operating temperature to eliminate moisture and stress and prevent cracking.

2. Severe thermal shock should be avoided during use to extend the service life of the crucible.

3. Regularly clean the remaining material on the inner wall of the crucible to keep the surface smooth and enhance thermal conductivity and melting efficiency.

Applications:

1. Widely used in castings, electric furnaces, induction furnaces, and metal processing, especially suitable for the smelting of high-temperature metals such as copper, aluminum, gold, and silver.

2. Outstanding performance in aerospace, automobile manufacturing, electronic components, high-end manufacturing and other industries.

Uniqueness and Advantages

Compared with other crucible materials, Carbon Bonded Silicon Carbide Crucibles has significant advantages:

Compared with graphite crucible:

1. High temperature resistance: The working temperature of Carbon Bonded Silicon Carbide Crucibles can reach 1600℃, the maximum instantaneous temperature resistance is 1800℃, and the high temperature resistance exceeds that of graphite crucible.

2. Thermal shock resistance: The low thermal expansion coefficient and high thermal conductivity of silicon carbide combined carbon crucible enable it to remain stable under rapid temperature changes and reduce the risk of rupture.

3. Corrosion resistance: Carbon Bonded Silicon Carbide Crucibles shows superior acid and alkali corrosion resistance, while graphite crucible is easily oxidized in an oxidizing atmosphere.

Compared with alumina (corundum) crucible:

1. Thermal conductivity: The thermal conductivity of Carbon Bonded Silicon Carbide Crucibles is as high as 90~120W/m·K, which can quickly transfer heat and improve smelting efficiency, while the thermal conductivity of alumina crucible is lower.

2. Mechanical strength: Carbon Bonded Silicon Carbide Crucibles has high bending and compressive strength and can withstand large mechanical stress, while alumina crucible is easy to break under mechanical impact.

3. Chemical corrosion resistance: Carbon Bonded Silicon Carbide Crucibles shows excellent resistance to acid, alkali, and metal melt corrosion, while alumina crucible may react in certain high-temperature molten metal environments.

Compared with nickel-based alloy crucible:

1. High temperature resistance: Carbon Bonded Silicon Carbide Crucibles has excellent high temperature resistance and is suitable for higher temperature smelting processes, while nickel-based alloy crucibles have limited high temperature resistance.

2. Cost-effectiveness: Carbon Bonded Silicon Carbide Crucibless have relatively low manufacturing costs, long lifespan, and high cost performance, while nickel-based alloy crucibles have higher material costs and shorter lifespans.

3. Corrosion resistance: Carbon Bonded Silicon Carbide Crucibles shows excellent corrosion resistance to various acids, alkalis and metal melt environments, while nickel-based alloy crucibles may form oxide films in high-temperature oxidizing environments, affecting their performance.

Silicon carbide combined carbon crucible has become an indispensable tool in modern metallurgy and casting industries due to its excellent performance and broad application prospects.  Through continuous technological innovation and process improvement, we are committed to providing customers with higher quality and more efficient smelting solutions to help customers improve production efficiency and product quality.