4 sintering methods for hotel ceramic tableware

With the development of the economy, the use of hotel ceramic white porcelin dinnerware has almost become a trend. Many consumers may have questions about the pre-production process of this product. Next, let’s take a look at the sintering process of hotel ceramic tableware: 1 , Microwave sintering method: the method of sintering by direct heating with microwave energy. At present, there is a microwave sintering furnace with an internal volume of 1 cubic meter and a firing temperature of 1650 degrees Celsius. If a controlled atmosphere graphite auxiliary heating furnace is used, the temperature can be as high as 2000°C or more. And there is a microwave continuous heating 15m long tunnel furnace device. The use of microwave oven to sinter ceramic white porcelin dinnerware is superior to other chinaware ceramic in terms of product quality and reducing energy consumption. 2. Liquid phase sintering: Many oxide ceramic tableware use low melting point additives to promote material sintering. As an additive used in high-temperature structures, it should be noted that the grain boundary glass is the main factor causing the degradation of high-temperature mechanical properties. If the liquid phase is selected to have a high melting point or high viscosity, or a suitable liquid phase composition is selected, then high temperature heat treatment is performed to make certain crystal phases precipitate on the grain boundary to improve the creep resistance of the material. 3. Self-propagating sintering method: the ceramic tableware is made through the rapid chemical exothermic reaction of the material itself. This method saves energy and reduces costs. According to related reports, more than 200 compounds can be synthesized by this method, such as carbides, nitrides, oxides, intermetallic compounds and composite materials. 4. Arc plasma sintering method: its heating method is different from hot pressing. It applies a pulse power to the product while applying stress, and the material is toughened and densified at the same time. Experiments have proved that this method is fast to sinter and can make the material form a fine-grained and high-density structure, and it is expected to be more suitable for sintering nano-scale materials.

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