Bone china advertising cup maintenance:
1. For bone china maintenance, please be sure to wash bone china by hand instead of using a dishwasher. If you must use a dishwasher, choose one with a “porcelain and crystal” washing function.
2. Bone china with gold edges should not be placed in a microwave oven, otherwise the gold edges will corrode.
3. The pH value of washing must be between 11-11.5.
4. When washing with water, the water temperature should not exceed 80 degrees Celsius.
5. Do not put the hot bone china into cold water immediately, so as not to damage the porcelain due to the sudden change of temperature difference.
6. If you use toothpaste to polish it slightly, you can settle the appearance of the scratched part.
7. If there are stubborn tea stains, use lemon juice or vinegar to clean them.
8. Do not use it in sudden cold and hot, so as not to burst.
9. Never burn directly with an open flame.
What we call bone china was invented in England in 1794. It got its name because the bone meal of animals such as cattle and sheep was added to the clay. It is a kind of green and environmentally friendly porcelain.
The formation of bone china depends on silica, alumina, and calcium oxide. The higher the calcium content, the better the color of the porcelain. In nature, there are not many sources of calcium oxide, so choose animal bone meal as the source of calcium oxide.
The color of bone china is naturally milky white. Generally speaking, bone china with a bone powder content of 25% can be called bone china. The internationally recognized standard bone powder should account for more than 40%. The bone china with the best texture has a proportion of bovine bone powder. 51%. Bone china, which can account for more than 40% of bone meal, is high-grade porcelain. my country’s Tangshan City is the first city to develop bone china in China, and it is also the city with the largest production scale.
The process of bone china goes through grouting, mold pressing, dehydration of plaster mold, initial firing, glaze firing, decal paper baking, etc., and then high-temperature firing before it can be used as a finished product. Bone china has very high requirements on the indicators of regularity, whiteness, transparency and thermal stability, so the reject rate is also high. The materials used for bone china are extremely particular, the workmanship is fine and the standards are strict, and its price is higher than other types of porcelain. It also has a visual sense of cleanliness, but is twice as strong as ordinary ceramics. The higher the content of bone powder, the lower the clay content, and the easier it is to burn and crack during the firing process. Higher technology is required in shaping, which increases the difficulty of firing and makes it even more precious.
Some people have also done corresponding experiments, using four bone china cups under the wheels of a caravan, they can support the weight of the caravan intact like a jack.
High-grade porcelain includes bone china, shell porcelain, pearl porcelain and so on. However, due to the high cost of shell porcelain and pearl porcelain, they are not suitable for industrial production, and there is no industrial output, so bone china is the best high-grade porcelain that can be bought in the world.
There are also many people who mistakenly believe that blue and white Linglong also has bone china. In fact, because blue and white Linglong has holes carved in the billet, if it is made of bone china raw materials, it is very easy to burn during the firing process.
Post time: Jul-03-2023