Alumina ceramic tube deformation how to solve？
June 29, 2023
Alumina ceramic tube deformation how to solve？
With the development of science and technology, we need more and more alumina ceramic tube, so in the production process of alumina ceramic tube deformation should be how to solve it? Next, the United States ceramic process to introduce you.
There are many factors for the deformation of alumina ceramic tube, such as blank body formula, forming, drying system and so on, which will lead to the deformation. For porcelain brick, the firing system has a greater impact.
It is mainly caused by unreasonable setting of temperature difference between upper and lower roller table. The defects such as warping Angle, downbending Angle and upwarping edge may occur in alumina ceramics.
The warping Angle of alumina ceramic tube is that the four corners of the blank body are warped, the rest of the surface is flat or only a little concave, this defect occurs in the middle and both sides of the kiln.
It is caused by excessive temperature difference between upper and lower roller plane in the late sintering stage. The size OF the fruit kiln is correct, and the temperature of the upper part of 2-3 groups of rollers and the temperature of the lower part of the roller will be increased equally after the low-firing.
If the size of the product after firing is too large, only increase the temperature under the roller table 5-10 ℃ or more; If the size of the product after firing is small, only increase the temperature above the roller table 5-10 ℃ or more, so that the above adverse phenomenon can be very good improvement.
Alumina ceramic tube Angle bending and the opposite of the warping defect, it is all around the blank body bending the rest of the surface is flat or only a little convex. This defect occurs in the middle and sides of the kiln. It is caused by excessive temperature difference between upper and lower roller plane in the late sintering stage. The solution is the opposite of the warping Angle above.
The upwarping edge refers to the upward bending of the blank body on both sides parallel to the direction of entering the kiln, while the deformation on both sides perpendicular to the blank body is not significant, which is caused by the unreasonable temperature difference between the upper and lower roller in the early stage of sintering zone.
In order to solve this problem, the temperature above the roller table can be increased by 5-10 ℃ or more in this area, and the temperature below the roller table can be reduced equally to make it slightly concave, but not convex. In this way, the softening convex point under the alumina ceramic tube body is used to maintain balance, and the blank body is restored to be straight due to gravity.
The above is the alumina ceramic tube deformation solution brought by Meicheng ceramics. Meicheng Ceramics is a research and development, production, sales in one of the electronic ceramics enterprises, started listed enterprises. Mainly engaged in: zirconia ceramics, alumina ceramics, talc porcelain and other non-oxide ceramics research and development and application.