GB/T 23460.1-2009 Part 1 focuses on the high temperature flowability test of ceramic glazes, using the melt flow method. The standard clarifies the principle of using the melt flow characteristics of glazes at high temperature to determine the flowability. Specify the equipment required for high temperature furnaces, measurement rulers, etc., and their accuracy requirements. Detail the glaze sample preparatory process, including ingredients, molding and other links. Clarify the high temperature test process, such as heating rate, test temperature, and the measurement and recording method of glaze flow morphology, provide a method for unified and accurate determination of ceramic glaze high temperature flowability, and help improve the mass and production technology level of ceramic products.