The production process of Special-Shaped Ceramic Structural Parts is rich and varied. The following is a detailed introduction for you:
1. Dry Pressing Method
Dry pressing is a common process for making Special-Shaped Ceramic Structural Parts. Ceramic powder is placed in a mold, and a certain pressure is applied to make the powder tightly combined in the mold to form a blank of the desired shape. The advantages of this process are high production efficiency and easy control of dimensional accuracy. It is suitable for making Special-Shaped Ceramic Structural Parts with relatively simple shapes and high dimensional requirements. For example, some small ceramic bearings, ceramic gaskets, etc. can be made by dry pressing. During the dry pressing process, it is necessary to control the parameters such as the particle size, water content and pressure of the powder to ensure the quality of the blank.
2. Slip Injection Molding Method
Slip injection molding is to inject ceramic slurry into the mold, and after the water in the slurry is absorbed or evaporated by the mold, a blank of a certain shape is formed in the mold. This process is suitable for making Special-Shaped Ceramic Structural Parts with complex shapes and large sizes. Slurry injection molding can be divided into two methods: hollow grouting and solid grouting. Hollow grouting is suitable for making hollow special-shaped ceramic structural parts, such as ceramic pipes, etc.; solid grouting is suitable for making solid special-shaped ceramic structural parts, such as ceramic sculptures, etc. The advantage of grouting molding is that it can produce very complex structural parts, but the production cycle is long, and the drying and firing process of the blank needs to be strictly controlled to avoid deformation, cracking and other problems.
3. Isostatic pressing method
Isostatic pressing uses liquid or gas as a medium for transmitting pressure to apply uniform pressure to ceramic powder, so that the powder is subjected to the same pressure in all directions, thereby forming a dense blank. This process can produce special-shaped ceramic structural parts with complex shapes, large sizes and uniform density. Isostatic pressing is divided into cold isostatic pressing and hot isostatic pressing. Cold isostatic pressing is suitable for making general special-shaped ceramic structural parts, while hot isostatic pressing can produce high-performance ceramic structural parts, such as ceramic parts used in the aerospace field. The advantages of isostatic pressing are uniform density and high strength of the green body, but the equipment investment is large and the production cost is high.
4. Extrusion molding method
Extrusion molding is to extrude ceramic mud into special-shaped ceramic structural parts of the desired shape through an extruder. This process is suitable for making special-shaped ceramic structural parts with regular shapes such as long strips and tubes. The advantages of extrusion molding are high production efficiency, low cost, and continuous production. However, for structural parts with complex shapes, extrusion molding is more difficult. During the extrusion molding process, it is necessary to control the parameters such as the mud formula, extrusion speed and pressure to ensure the quality of the structural parts.
In short, the production processes of special-shaped ceramic structural parts include dry pressing, grouting, isostatic pressing and extrusion. Different processes are suitable for structural parts of different shapes and requirements. In actual production, it is necessary to select the appropriate manufacturing process according to the specific situation.
