Silica crucible

Product performance and advantages

Excellent thermal conductivity

The crucible is made of high thermal conductivity materials with dense structure and low porosity to ensure rapid and uniform heat transfer in high temperature environments and improve work efficiency.

Extended service life

Compared with ordinary clay graphite crucibles, the service life of silicon carbide crucibles can be increased by 2-5 times, significantly reducing replacement frequency and maintenance costs.

High density, no defects

Advanced isostatic pressing technology ensures uniform material density and no internal or external defects, improving the overall quality and reliability of the crucible.

Superior mechanical strength

High-quality materials and high-pressure pressing technology enable the crucible to maintain good strength and shape stability in high-temperature environments, providing high-pressure resistance.

Excellent corrosion resistance

The advanced material formula enables the crucible to effectively resist the physical and chemical effects of molten substances and extend its service life.

Reduce slag adhesion

The amount of slag adhesion on the inner wall is minimal, significantly reducing heat resistance and the possibility of crucible expansion, thereby improving production efficiency and product quality.

Wide range of high temperature resistance

The working temperature range of silicon carbide crucible is 400-1700℃, which is suitable for various high-temperature smelting and casting processes.

low pollution

Material design takes into account the relationship and process characteristics of smelting metals to ensure that the product contains virtually no harmful impurities, thus ensuring purity.

metal protection

This material contains special elements that can effectively inhibit metal oxidation, reduce metal loss, and save resources.

Energy saving and environmental protection

High thermal conductivity can save significant fuel and reduce waste pollution, while appropriate electrical resistance significantly reduces reactive power losses during induction heating.

High antioxidant properties

The advanced anti-oxidation mechanism protects the graphite in the crucible and extends its service life.

Preheat treatment before use

When using new silicon carbide crucibles, proper preheating is critical to prevent them from cracking due to thermal shock.  The purpose of preheating is to dehumidify the crucible.  Specific steps are as follows:

Initial warm-up

Place the new crucible near an oil stove for 4-5 hours or burn charcoal in the crucible for about 4 hours to remove moisture.

Gradually heat

0°C-200°C: slowly heat for 4 hours

200℃-300℃: Heat slowly for 1 hour

300℃-800℃: slowly heat for 4 hours

300℃-400℃: slowly heat for 4 hours

400℃-600℃: rapid heating and maintenance for 2 hours

Furnace preheating

After the furnace is shut down, slow and fast heating is performed according to the type of oil or electric furnace to ensure that the crucible reaches the best condition before official use.

Operational process

When using silicon carbide crucible, operating procedures must be strictly followed to ensure that its performance is fully utilized, its service life is extended, more value is created, and higher economic benefits are generated.  The excellent performance and reliability of silicon carbide crucibles make it an indispensable tool in industrial smelting and casting processes.