Little knowledge of ice cracked ceramic tableware

The small knowledge of ice cracked ceramic white porcelin dinnerware is different from the overglaze, in-glaze, and underglaze colors. A branch of painted porcelain white porcelin dinnerware is ice cracked chinaware ceramic. Due to the different shrinkage rates of the ceramic matrix and the glaze during the cooling process, there are small glaze Crack. That is, the carcass and the glaze have different rates of thermal expansion and contraction resulting in cracking of the glaze. Many people worry that the cracking of the glaze will cause the color layer under the glaze to leak and dissolve heavy metals. Generally speaking, qualified ice cracked porcelain tableware is absolutely safe. Although there are cracks, the glaze is still intact enough to cover the color material below. But if you can hear a faint sound when you squeeze the porcelain hard, it means that the glaze and the carcass are completely separated, and this kind of ice cracked porcelain is not better.
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