10 years of professional engaged in daily ceramics, craft ceramics, glass products OEM/ODM factory.

Why does the dishwasher wash the gold and silver edges off the porcelain?

July 17, 2022

Anything made of porcelain clay is called porcelain. Porcelain is made of porcelain stone, kaolin, quartzite, mullite, etc., And coated with glass glaze or painted objects. The glaze applied to the surface of porcelain must be glass glaze fired at high temperature with porcelain. The base material of porcelain must be porcelain clay. Porcelain clay is mainly composed of kaolin and cosmetic clay, and contains feldspar, quartzite and mullite. Low iron content. After high temperature firing, the tire color is white, transparent or translucent, and the water absorption of the tire body is less than 1%, or it does not absorb water. Porcelain is fired at a high temperature (about 1280 ℃ ~ 1400 ℃) in the kiln. The glaze color on the surface of porcelain will undergo various chemical changes due to different temperatures. It is the treasure of Chinese civilization.

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First of all, let's start with the dishwasher: according to the working mode, the dishwasher can be divided into two types: one is high-temperature and high-pressure water jet cleaning, and the other is ultrasonic cleaning. No matter what kind of dishwasher, in order to ensure the cleaning quality, the porcelain will be repeatedly cleaned, high-temperature sterilization or high-frequency impact. Such a blow to oil pollution is devastating. Back to the porcelain itself, ceramic products fired at a high temperature of more than 1000 degrees are not timid in the face of the wet ravages of the dishwasher. However, the decorations on porcelain, such as gold and silver edges, are still flowers in the greenhouse, whether painted or gilded. Under the high temperature, high pressure and high frequency impact of the dishwasher, the gold and silver frame naturally disintegrates. It is recommended to keep away from Phnom Penh tableware when washing with dishwasher and steel wire at home.

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