The corner down bending of products produced by ceramic processing factory is just opposite to the warping defect. It is that the four sides of the green body are bent down, and the rest of the surface is flat or only a little convex. This defect occurs in the middle and both sides of the kiln. It is due to the large temperature difference between the upper and lower surface of roller table in the later stage of sintering. The solution is the opposite of the warping angle above. The warping edge is that the green body bends upward along the two sides parallel to the kiln entrance direction, and the deformation of both sides in the vertical direction is not obvious. The reason is that the temperature difference between the top and bottom of roller table is unreasonable in the early stage of sintering. In order to solve this problem, the temperature above the roller table can be increased by 5-10 ℃ or more, and the temperature under the roller table can be reduced equally to make it slightly concave, but not convex. In this way, the tubular green body produced by alumina ceramic manufacturer can be used to soften the bulge point to maintain balance, and the green body will recover to be straight due to gravity.There are many factors for the deformation of insulating ceramic products produced by industrial ceramic manufacturers: such as green body formula, forming, drying system, etc., which may lead to deformation; generally speaking, the firing system is the most important factor, which is mainly caused by the unreasonable temperature difference between the upper and lower roller tables. It may lead to the defects such as angle warping, corner down bending and edge warping. ​The warping angle of insulating ceramic products produced by precision industrial ceramics manufacturers is that the four corners of the green body are upwarped, and the other surfaces are flat or only slightly concave. This kind of defect occurs in the middle and both sides of the kiln. It is due to the large temperature difference between the upper and lower surface of roller table in the later stage of sintering. If the size of the kiln is correct, lower the temperature of the upper part of 2-3 groups (boxes) roller bars after firing and increase the temperature below the roller table equally. If the size of the product after firing is too large, only increase the temperature under the roller table by 5-10 ℃ or more; if the product size is too small, only increase the temperature above the roller table by 5-10 ℃ or more, so that the above-mentioned undesirable phenomenon can be well improved