In ceramic sintering, what are the specific advantages of Kejia furnaces?
During the ceramic sintering process, the advantages of Kejia furnaces run through the entire process, providing a strong guarantee for the production of high-quality ceramic products. The details are as follows:
1. **Precise temperature control**: In the low temperature stage, when the temperature rises from room temperature to 300℃, the high-precision temperature sensor equipped with the equipment works together with the intelligent control system to accurately control the temperature and stably remove the adsorbed water in the green body, ensuring the stable quality of the green body, and the temperature fluctuation is extremely small, effectively avoiding damage to the green body caused by unstable temperature. Entering the medium temperature stage, the temperature rises from 300℃ to 900℃, its excellent temperature control performance can help the organic matter, carbonates and other impurities in the green body to fully decompose and oxidize, and further discharge water. At this time, the uniform temperature field in the furnace allows the various parts of the green body to react synchronously and shrink to the same degree, laying a solid foundation for subsequent sintering.
2. **Efficient heating**: In the high temperature stage (900-1300℃ and above), the high-purity carbon tube heating element of Kejia vacuum carbon tube furnace can provide strong and stable heat output, which can quickly reach and maintain the temperature in the furnace in a high temperature range suitable for the diffusion and rearrangement of ceramic particles, accelerating the sintering process.
3. **High-quality environment creation**: The equipment can effectively maintain a vacuum environment, prevent harmful gases from corroding ceramics, greatly promote the growth of necks between ceramic particles, accelerate the elimination of pores, significantly improve the density of ceramics, and make ceramic products excellent in mechanical strength, insulation, thermal stability, etc.
4. **Reasonable cooling control**: During the cooling stage, the cooling system carefully designed by Kejia furnaces can cool down the sintered ceramic products evenly according to the preset slow cooling rate, avoid cracks caused by thermal stress concentration, and ensure the integrity and internal structure stability of ceramic products.So, how to ensure the temperature uniformity of Kejia furnaces?
1.Optimize the layout of heating elements:
Kejia equipment usually uses multiple groups of heating elements, which are reasonably distributed around the furnace. By accurately designing the position and power of the heating elements, different areas in the furnace can get uniform heat supply. For example, in a vacuum carbon tube furnace, the carbon tube heating elements are arranged in a surrounding manner according to the shape and size of the furnace to ensure that the heat can be radiated evenly to all positions inside the furnace.
2.Adopt advanced temperature control system:
Equipped with high-precision temperature sensors, these sensors can monitor the temperature at different positions in the furnace in real time. The control system automatically adjusts the power output of the heating elements according to the temperature information fed back by the sensors to achieve precise temperature control and uniformity adjustment. For example, when the temperature sensor in a certain area detects that the temperature is slightly lower than the set value, the control system will automatically increase the power of the heating elements near the area to quickly restore the temperature to the set value, thereby ensuring the consistency of the temperature in the entire furnace.
3.Design a reasonable furnace structure:
The shape and size design of the furnace will affect the distribution and transfer of heat. The furnace of Kejia equipment usually has good symmetry and reasonable spatial layout to reduce dead corners and unevenness during heat transfer. At the same time, high-quality insulation materials are used to insulate the furnace to reduce heat loss to the external environment and ensure that the heat is fully and evenly distributed in the furnace.
4.Perform temperature uniformity testing and calibration:
During the equipment installation and commissioning phase and regular maintenance, professional temperature testing equipment will be used to test the temperature uniformity in the furnace. By placing multiple temperature test points at different locations in the furnace, detailed temperature distribution data can be obtained. According to the test results, the power and position of the heating element are fine-tuned and calibrated to ensure that the equipment can always maintain good temperature uniformity during operation.
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