Industrial ceramic production process introduction
Industrial ceramic production process mainly includes the following steps :
1. Powder preparation : The production of industrial ceramics first requires the preparation of high quality ceramic powder. The quality of the powder directly affects the quality of the final product, which usually requires high purity, good dispersion and uniform particle size distribution. For example, microcrystalline zirconium materials are often used as ceramic powder raw materials for 3C product shells because of their advantages of phase transition toughening .
2. Molding : Molding is the key step in the production of ceramic parts, the commonly used molding methods include injection molding, dry press molding and casting molding.
(1) injection molding : similar to plastic injection molding, suitable for the production of small complex shapes of precision ceramic parts. The process involves mixing the organic carrier with ceramic powder, drying, granulating and injecting it into a mold to form a blank in the desired shape .
(2) dry pressing : the powder after granulation is loaded into the mold, and the billet of a certain shape is made by applying pressure to the press. This method is suitable for the production of flat shaped products, high efficiency but may not be uniform density .
(3) casting molding : suitable for the production of thin ceramic material, the casting machine will flow the slurry to the base band to form a smooth upper surface of the blank film, after drying, cutting, stamping or drilling, and finally firing into the finished product .
3. Sintering : The forming body needs to go through the sintering process to achieve the required physical and chemical properties. Parameters such as temperature, time and atmosphere need to be controlled in the sintering process to ensure the density and strength of the product .
4. subsequent processing : The sintered ceramic parts may need to be grinding, polishing and other subsequent processing to improve the surface quality and accuracy. Commonly used processing technologies include grinding, ultrasonic machining, electric discharge machining, laser machining and CNC milling .
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