The forming process of high-nickel saggers mainly includes semi-dry pressing, plastic pressing, plastic rolling, and slip casting.
Semi-dry pressing and molding:
Process characteristics: Powder material with a certain degree of humidity is loaded into a mold, and pressure is applied by a press to shape the powder material into a sagger of the desired shape.
Applicability: Applicable to the production of saggers with simple shapes and large dimensions, such as square saggers.
Advantages: High production efficiency, suitable for mass production.
Plastic compression molding:
Process characteristics: Utilizing the plasticity of the billet, it is shaped into the desired form through external forces such as rolling, spinning, etc.
Applicability: Applicable to the production of crucibles with complex shapes and thin walls, such as circular crucibles.
Advantages: The product has a dense structure, high mechanical strength, and minimal deformation.
Plastic rolling forming:
Process characteristics: During the rolling and forming process, there is both rolling and sliding between the rolling head and the clay material, which is stretched and spread out to form a sagger of the desired shape.
Applicability: Suitable for producing crucibles with regular shapes and uniform wall thickness, such as circular or elliptical crucibles.
Advantages: High production efficiency, low labor intensity, and ease of forming mechanized or automated production lines.
Grouting molding:
Process characteristics: The slurry is injected into a mold and shaped into a sagger of the desired shape through drainage or water absorption.
Applicability: Applicable to the production of saggers with particularly complex shapes or large sizes, such as special-shaped saggers.
Advantages: It can produce products with complex shapes and uniform wall thickness, but the production cycle is longer.