Bone porcelain firing and polishing 7

( 5) Fall slag ( Dirty point) Seting carelessly, or poor quality of kiln furniture, kiln furniture cracking during thermal shock will drop granulated slag on the bone China products, after burning and bone porcelain glaze layer bond cause & other Fall slag & throughout; Defects. This should be to improve the thermal stability of the kiln furniture, Seting before cleaning the kiln furniture and bone China products, end of external coating. Bone porcelain slurries or glazing into iron impurities in the process of glaze will be dirty point defect after burning, strengthen slurries in addition to iron, improve sanitation can reduce this kind of defect. ( 6) Bone China fire place high flame temperature of the crater, flame directly caused by erosion of bone porcelain products products edge local yellow and brown burn marks of glaze rough serious defects, called & other; Fire thorn & throughout; 。 For firing temperature uniform and near the crater is not big and high quality demand of appearance of products, with fireproof board cover ( 7) Bone China adhesive scar & other; Glue scar & throughout; Is bone porcelain products in firing defects caused by/result from/arise from and content of adhesive and, for the following reasons. The refractoriness of kiln furniture and refractoriness under load is low, in the process of high temperature sintering deformation leading to bone porcelain products twisted sticking together. (2) the bone porcelain products should be to remove the part of the glaze glaze not net. (3) the bone porcelain kiln improper operation, operation is not smooth adhesive scar is light person, with a grinding wheel grinding, can burn again glazing repair. Severe scar do scrap processing. ( 8) Bone porcelain glaze of uneven glazing, glazing is too thick, bone porcelain glaze high temperature viscosity is too low, melt glaze flow down into the wispy phenomenon called glaze strand. The solution is well glazing and reasonably adjust the glaze of high temperature viscosity. ( 9) Bone porcelain glaze glaze kiln drops after using for a long time, because the fritted glaze volatile gathered for a long time, kiln top there will be a bright glass layer, gathered, will drop into the bone China products, glaze drop caused by defects. Solution: the top defect or other obstructions, serious when need to repair the kiln. In a word, the complexity of the cause of defect and production situation of each enterprise is not the same, it is hard to make both comprehensive and universally applicable solutions. Problems arise, we should process technology, production organization and management system aspects of in-depth investigation and study, careful analysis, find out the reason; And according to the actual situation proposed the solution to solve the problem. Through experiment, and then implement to production. When defects during production and it is difficult to find reasons, effective solution is in strict accordance with the technical requirements in various processes from raw material, process and technical personnel have been tracking to the end of the bone China products, this method is easy to solve the artificial defects caused by operator error. Other defects ( 1) Bone China polishing polishing process of defects is prone to defects & other Clash & throughout; , is a good way to solve & other; Less frequently put & throughout; 。 Second, bone China polishing is not clear or cleaning not net will burn defect caused glaze, should strictly control ( 2) Some bone porcelain glaze slag hollow products such as coffee pot, kettle, polishing, inside the pot body is not easy to clean, easy to save refractory coating residue, such as bone porcelain glaze burning, prone to glaze slag defects. Solution is polishing after the dumping of clean, clean and glaze. ( 3) Some bone porcelain glaze thick hollow products such as tea pot, when shi fritted glaze, owing to the bad bone porcelain glaze slurry performance or improper operation workers, at the bottom of the left in POTS put together a large number of bone porcelain glaze, firing after the apparent glaze thick ( More than a yellow-green) There was a cracking phenomenon seriously. — Tangshan bone China tureen is gone. 。 。 。 。 。