Bone porcelain firing and polishing

Buckle burning process is especially suitable for female die forming bone porcelain, such as flat bone porcelain products. As a result of the cavity die forming bone porcelain body in a dry, dry is the inner surface, and the outer surface of the contact with the bone China model dry slowly, this creates a bone porcelain product mouth to stress. Burning process of copying saggar was offset by the internal stress, achieved the effect of forced firing. After some of the thin green, dry even if neat degree is not high, most strong after burning can get a plastic correction. Back burning process and the burning process, on the other hand, back to burn process is normal finger bone porcelain products placed face up, hold on copy on the back of sagger loading on the surface of the burning process. For some made by male mold forming green, because the dry way and the cavity die forming, by contrast, bone China body mouth outward force, therefore, should be of the burning process. Hanging burning process hanging burning process is the bone porcelain products with refractory products ( Heat resistant steel, silicon carbide, etc. ) Hang up for burning burning method. Ceramic products have holes on the spoons, etc, generally adopts hanging burning process. Fold to burn process folding process is to bone porcelain products stacked together for burning in the burning process, as shown in figure 6 - 4. Fold the burning process can improve the burning density of bone China products, some demanding small flat bone China products, spoon, etc, can be used to burn when burning process. Fold the burning process of defect is fold the burned bone porcelain products may there are differences between the upper and lower size or maturity of bone China product size when the demand is higher, as far as possible do not use this method. Tide mouth burn process mouth burn process refers to the bone China products shape of mouth with its corresponding products for firing process method, bone porcelain cups, bone China tureen, bone porcelain teapot, bone porcelain coffeepot etc. This method is commonly used to burn. Ding ding burn process one burning process refers to the refractory materials used butyl, will hold up bone China products, at the bottom of the impending for burning burning technology. To part at the bottom of the need to have grapefruit bone China products, glaze burning when, can adopt the technology of burning glaze burning at the bottom of the product is smooth, after the fourth place can polishing processing clean and tidy. Straight burning process straight burning process is according to the normal use of finger bone porcelain products placed directly kiln firing process method. This process is glaze burning often used. Biscuit firing of a few small mouth products, also can use direct burning process. Other charging without burning process sometimes make samples or other suitable bearing burn sagger, can adopt the following methods with burn: calculating the contraction of fine bone China products, according to the contract size with light bubble brick processing corresponding to the size and shape, besmear brushs the refractory coating, accurate placement on the shed board, then blank button on top. Firing system of kiln firing system depends on the bone porcelain glaze composition and properties, the shape, size and thickness of the body, as well as the furnace structure, method of seting, fuel type, correct reasonable firing system is a important guarantee to improve bone porcelain product yield. Bone China ( Bone China) Firing system mainly includes the temperature of the kiln system, pressure system and atmosphere system. According to the requirements of different products, determine the temperature curve and the nature of the atmosphere. Pressure system is to realize the system of temperature and atmosphere system main control condition, the three associated with each other, complement each other. Bone China ( Bone China) Burnt biscuit firing or glaze burning by oxidizing atmosphere or neutral atmosphere, reducing atmosphere can cause a not beautiful color such as green production. — Tangshan bone porcelain tableware English to be continued. 。 。 。 。 。