The bone china manufacturer tells you the production process of the bone china advertising cup

Raw materials: The excellent bone china advertising cup is the specific process of adding a large amount of cattle ashes with less impurities to the raw materials with feldspar and scopole clay as the main raw materials. 1. Pour the various materials into the ball mill according to the ratio of raw materials. The ratio of water, material and stone is about 1:1:2, and then it is ground. The grinding time is determined by the size of the raw material particles, about 24 hours; 2. Then it is sieved at a time (stainless steel screen 200 mesh About) one-time iron removal iron (the more iron removers are connected in series, the better the effect); the second time sieving (about 250 mesh screen) 3. In the next step, the raw material is injected into the filter plate through a plunger pump for dehydration, and the dehydrated raw material is put Into the mud mixer, usually stir 3 sides to 4 sides (the middle is to keep the vacuum degree and the moisture content of the material, the final moisture content of the finished material is 22%) Model making: whether it is imitation or design by yourself, first Steps must make the model in place 1. First make a prototype, and then turn out the tyre mold according to the prototype; 2. When the plaster is poured, the water paste ratio of the plaster is about 1:2. It is fast and accurate, otherwise the time will be long. The fetal membranes will be severely damaged by the model; 3. Dry the model into shape: Because the raw material contains a large amount of bone powder, the viscosity of the soil becomes smaller. The wholesale dinnerware suppliers needs to be extraordinarily shaped during the production process. (1) The molding machine can produce various regulated or irregular blanks by pressing the model, or by picking up, or manually sticking, after drying, polishing (repair), and washing (inspection) before they are flawless. Firing and firing: 1. Associate firing at the highest temperature of 1230-1250 °C after forming and processing (the specific temperature depends on the ratio of raw materials). During firing, the shrinkage of bone china is very large, so the finished product after kiln firing It will shrink by 20% (generally porcelain white porcelin dinnerware shrinks by 7%), so the shape is easy to deform. Plates, bowls, etc. must be placed on the special Kuang bowl for long-term cooking. (The kiln selection is now basically a tunnel kiln, which uses natural gas and coal to burn. Many firing methods are used for buckle firing, overhead firing, and hanging firing.) 2. Then check the shape and size, select and grind the surface with a sprayer The glaze is sprayed on (glaze is also a kind of raw material), and the glaze is fired at 1150 -1200°C in the kiln. Color baking: Generally, there are two kinds of pattern methods. One is to paste the high temperature resistant decal paper on the product after the glaze is burned. The second is to paint directly with special paints and finish it at 600-820 °C. Fired in the left and right kiln. Inspection: All the itineraries are strictly inspected. If the export must pass the lead and chromium content determination in ISO9001, the products will be sent to the next itinerary and made into finished products.
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