Semiconductors, lithium batteries, photovoltaics—these familiar high-tech industries now utilize vacuum technology to assist in production, helping to elevate the quality of their products. Do you know that vacuum technology isn't limited to high-tech industries; it's also used in many traditional sectors. China was once renowned for its china, hence the name "China." The ceramics industry is a traditional Chinese industry, and nowadays, ceramics production also use vacuum pumps.
Pottery production requires preparing a clay body. Before this process can be completed, clay refining must take place. Clay refining involves refining the clay through mechanical or manual methods. Clay refining involves three core steps:
- Impurity removal: Removal of impurities such as sand, gravel, and organic matter from the clay.
- Homogenization: A vacuum clay refining machine is used to evenly distribute the moisture and particles in the clay body.
- Plasticization: Improving plasticity through processes such as aging and kneading.
(Modern vacuum clay refining machines can reduce the porosity of the clay body to below 0.5%).
Vacuum technology effectively removes moisture and air from the clay body, making the clay body more uniform and improving the mechanical strength of the clay body. To prevent the vacuum pump from ingesting clay and water, an inlet filter or gas-liquid separator is required.
In addition to vacuum clay refining, vacuum technology is also used in other ceramic production processes, such as vacuum pressure casting to create irregular shapes, vacuum drying to prevent cracking of the clay body, and finally vacuum firing and even vacuum glazing.
Even within the same industry, vacuum applications can vary greatly, resulting in varying requirements. Therefore, filter selection must be tailored to the specific process. Furthermore, if an oil pump is used, such as in vacuum coating applications, an external exhaust filter may also be required.
Post time: Aug-14-2025
