Method for detecting glaze shrinkage defect of sanitary ceramic product

Abstract

The invention discloses a method for detecting a glaze shrinkage defect of a sanitary ceramic product. According to the method, change of the distance, between the two ends, before and after sinteringof a glazed fan-shaped ring green body is compared with change of the distance, between the two ends, before and after sintering of an unglazed fan-shaped ring green body to evaluate influence of glazing on sintering shrinkage of the green body. The problem in evaluating influence of glazing on the sintering shrinkage of the green body in the ceramic green body production process can be solved, deformation caused by a difference between a deformation stress generated by a glaze layer and that of the green body itself can be recorded faithfully by means of a fan-shaped green body, influence ofglazing on green body sintering in practical production can be fit to larger degree, matching of a glaze formula and performance with reaction of the green body in the sintering temperature-rise stage can be determined, possible defect of the glaze formula in the design and manufacture stages can be detected, and the risk can be avoided.

Description

technical field [0001] The invention relates to the technical field of detecting glaze shrinkage defects on ceramic sintered glaze surfaces, in particular to a method for detecting glaze shrinkage defects on glaze surfaces of sanitary ceramic products. Background technique [0002] The sanitary ceramics industry has been developed in China for more than 40 years. Domestic quality control methods for ceramic production are becoming more and more perfect, and various defect prevention and control measures for finished products are also developing. Irregular peeling, and the phenomenon that the surface of the ceramic body is exposed) There is no independent single-item detection method for the evaluation of defects. sample bricks to observe whether there is glaze shrinkage at the corner position, and provide a reference for whether the glaze is qualified or not; During the sintering process, the shape change is very small, and the stress generated by shrinkage is stored inside...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a method for detecting glaze shrinkage defects of sanitary ceramic products, which can solve the problem of the production process of ceramic bodies by using the detection method for glaze shrinkage defects of sanitary ceramic products. In order to evaluate the effect of glazing on the sintering shrinkage of the green body, this method uses the fan-shaped ring green body to faithfully record the difference between the deformation stress of the glaze layer and the green body itself during the firing process. Deformation results, in order to match the effect of glazing on the sintering shrinkage of the green body to a greater extent in actual production, so as to determine the matching of the glaze formula and performance with the reaction of the green body during the firing and heating stage, and realize the performance design of the glaze. and the function of detecting the defect risk of the glaze in the production stage and avoiding the risk

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