Bone porcelain firing and polishing 1

Bone China production firing is the key. Bone China ( Bone China) Commonly used high temperature burning, low temperature glaze firing process, the second high temperature biscuit firing, adopt copying of sagger forced firing, products generally neat degree is higher. Again after firing porcelain polishing, shi fritted glaze glaze to burn. Thus, bone China ( Bone China) Burning technology is more complex, the burning method and kiln furniture is different from the traditional normal bone China, some ideas and even ordinary bone porcelain are at opposite poles. Sintering methods bone China ( Bone China) Production of typical burning process is the high temperature burning, low temperature glaze firing process of the second. High temperature biscuit firing refers to the body in high temperature fire becomes a China porcelain is 1250 ~ 1280 ℃. The so-called low-temperature glaze burning is refers to the biscuit firing glaze billet after glazing at low temperature ( General is 1050 ~ 1150 ℃) Burning it is different from the traditional Chinese bone China & other; Biscuit firing at low temperature, high temperature glaze burning & throughout; The sintering method. The Japanese called high temperature biscuit firing & other; Burn the association & throughout; , low-temperature glaze burning become & other; Glaze firing & throughout; And the traditional biscuit firing at low temperature become & other; Biscuit firing & throughout; Together, the high temperature slab glaze burning called & other; Throughout this burn &; 。 Physical and chemical reaction in the process of burning bone porcelain body chemical changes in the firing process of bone China ( Bone China) Burning is a complicated process. According to the bone China billet in the process of firing the changes of physical and chemical characteristics, firing process can be divided into five stages. Throughout the body in the process of burning in the furnace temperature and atmosphere through changing at the same time, accompanied by weight loss, shrinkage and density, color, physical properties such as strength, hardness, and its significant chemical changes in final calcium phosphate, residual quartz bonding with other components by vitrification quality constitutes the density, mechanical strength porcelain body. Bone China ( Bone China) The structural changes in the body under different temperature and chemical reaction. Bone porcelain glaze in a physical change in the process of burning bone China ( Bone China) Use the fritted glaze glaze, ceramic glaze burning process is essentially the sintering process of glass. In the process, the glaze particles melt together with burning, until the bubble escape or pressure near the bone porcelain body parts, the surface smooth bone porcelain glaze. Because using melted good fritted glaze, bone China, Bone China) A raw glaze glaze glaze firing process simple burning process. The basic process is as follows. ( 1) Ceramic glaze contains some moisture, volatile suspended solids and binder, glaze early burn water further process is as follows. In addition, organic binder to evaporate, leaving some holes. ( 2) Sometimes used in oxidation decomposition bone porcelain glaze kaolin as a suspending agent, kaolin starts to break down and release of gas, the left part of the hole. ( 3) Fused bone porcelain glaze began to melt, gas began to escape, until the whole melt. Escape did not escape the formation of air bubbles, part has not yet formed of pinhole defects. ( 4) After cold bone porcelain glaze fully molten, vitreous cooling supercooled formation. Put burning process bone China ( Bone China) Commonly used high temperature burning, low temperature glaze firing process, the secondary, therefore, is different from the ordinary traditional bone China has its own burning process. Burning process deduction burning technology refers to the green button after forming in copying sagger, forced firing, by neat XiaTi to plastic bone China products, reduce the influence of stress in the process of forming, assure neat degree of the product. — Tangshan bone China coffee cups to be continued. 。 。 。 。 。