Crucibles and saggers are essential components in high-temperature processes, particularly in the fields of material processing, metal casting, and chemical experiments. They serve the dual purpose of containing, protecting, and supporting materials as they undergo high-temperature treatments such as sintering, melting, or firing. Here’s an overview of the different types of crucibles and saggers:

Types of Crucibles:

  1. Ceramic Crucibles (Sagger)

    • Material: Typically made from high-quality ceramics, such as alumina or zirconia.

    • Applications: Used in chemical experiments, heat treatment, and ceramic firing. They provide excellent heat resistance and stability, commonly used for high-temperature sintering and firing.

  2. Graphite Crucibles (Sagger)

    • Material: Made from high-density graphite, these crucibles are well-known for their exceptional high-temperature resistance and chemical stability.

    • Applications: Commonly used in metal melting, casting, and heat treatment processes. Their high resistance to thermal shock makes them ideal for working with molten metals.

  3. Metal Crucibles (Sagger)

    • Material: Made from metal alloys such as stainless steel or other high-melting-point metals.

    • Applications: Typically used in metal melting, alloy preparation, and other high-temperature processes requiring strength and durability. Metal crucibles can withstand extreme temperatures and are resistant to oxidation.

  4. Quartz Crucibles (Sagger)

    • Material: Made from high-purity quartz, which has excellent resistance to high temperatures and chemical corrosion.

    • Applications: Often used in high-temperature experiments, chemical analysis, and as containers for molten glass or other materials in processes requiring ultra-high purity.

Crucibles and Saggers - Domande Frequenti