There are many ways to form special-shaped ceramic structural parts, each with its own unique advantages and application scenarios. The following are several major forming methods, each of which will be introduced in more detail:
1. Isostatic Pressing
Isostatic pressing is a process that uses liquid or gas to transmit pressure to uniformly pressurize ceramic powder in a mold. This method can produce special-shaped ceramic structural parts with complex shapes, precise dimensions, and uniform density. During the isostatic pressing process, the powder is compacted under high pressure to form a dense body, which helps to improve the mechanical properties and durability of ceramic products. In addition, isostatic pressing is also applicable to a variety of ceramic materials and has high flexibility.
2. Hot Die Casting
Hot Die Casting is a method in which ceramic powder is mixed with a binder and heated to a certain temperature to make it fluid, and then injected into a mold for molding. This method is suitable for preparing special-shaped ceramic structural parts with complex shapes and high precision requirements. During the hot die casting process, the ceramic slurry is cooled and solidified in the mold to form a green body of the desired shape. Hot die casting has the advantages of high production efficiency and good molding accuracy, but it is necessary to control the fluidity of the slurry and the temperature of the mold to ensure the molding quality.
3. Dry pressing
Dry pressing is a process in which ceramic powder is directly placed in a mold and compacted by mechanical pressure. This method is suitable for preparing special-shaped ceramic structural parts with simple shapes and large sizes. Dry pressing has the advantages of high production efficiency and simple equipment, but it has high requirements for the fluidity and compressibility of the powder. In addition, the density distribution of the green body formed by dry pressing may not be uniform enough, and subsequent processing is required to improve product quality.
4. Slip injection
Slip injection is a process in which ceramic slurry is injected into a gypsum mold and the water absorption of the mold is used to solidify the slurry. This method is suitable for preparing special-shaped ceramic structural parts with complex shapes and thin walls. During the grouting process, the slurry gradually solidifies in the mold to form a green body with a certain strength. Slurry injection molding has the advantages of high molding precision and strong adaptability, but it is necessary to control the viscosity and fluidity of the slurry to ensure the molding quality.
In summary, there are many different molding methods for Special-Shaped Ceramic Structural Parts, each of which has its unique advantages and application scenarios. In actual production, it is necessary to select the appropriate molding method according to the specific requirements of the product.
