underglaze color

In the paper the author has researched the influence of the such main raw materials as quartz and orthoclase, which are used to produce the glazed brick, on the expansion coefficient of the porcelain basement and the bottom enamel and has tested the expansion coefficient of the variety of raw materials, the porcelain basement and the bottom enamel.

本文探讨了生产釉面砖主要原料石英、长石等对素坏和釉底料膨胀系数的影响 ,并对各原料、素坏和釉底料的膨胀系数进行了测试。