We often come into contact with ceramic cups. Most people don’t use enamel cups anymore. However, enamel bowls and enamel tableware, such as enamel basins, still have many uses. Both ceramic cups and enamel cups have porcelain, so what is the relationship between the two?
An enamel cup is a metal utensil with one or more layers of enamel plated on the inside and outside. The enamel on the outside of the enamel cup is composed of sodium silicate and metal salts. Generally pure white enamel products do not contain lead, but contain heavy metals such as aluminum, while other colors need to add some metal salts, so enamel products not only contain heavy metals, but also lead, cadmium, tin, etc., but because of the Such a layer of enamel, so as long as these harmful elements do not precipitate, it will not pose a threat to human health. The firing temperature of enamel products is about 700 ℃ after enamel plating, so their chemical properties are not stable. If a perfect enamel cup is filled with acidic beverages such as carbonated, orange juice, lemon juice, etc., or hot coffee, excessive lead will be precipitated. Of course, enamel products cannot be heated. If it is damaged, it will not be able to be used. The precipitation of harmful substances is simply … not too much. If there are enamel utensils in the home, it is best not to store acidic substances in enamel utensils. Of course, overnight leftovers should not be put into enamel utensils. It is easy to produce acid and enamel reaction, and then precipitate lead. It is best not to leave overnight dishes in daily life. Even if the tableware is safe and will not react with the dishes, eating it is not good for the body. Acids include vinegar, coffee, citrus beverages, tomato juice, pickles, sugar water, etc.
Ceramics are utensils made by glazing on a porcelain blank and then firing at high temperature. The high temperature firing of ceramics also determines that its chemical properties are relatively stable, and it is not easy to react with acidity. Of course, what we are talking about here is also qualified ceramic tableware. If you cannot distinguish ceramics well, you can buy tableware from formal channels. The heavy metal of the ceramic cup is also in the pattern pigment, so you can choose underglaze color, underglaze color, and if you choose overglaze color, you can choose a manufacturer you trust or have a brand, and it is best to touch the food where there is no flower decoration. Once the surface of the porcelain is cracked or chipped, it should be discarded. Because harmful substances such as lead and cadmium are likely to be precipitated from these places, the health of the family will not be guaranteed.
