Bone China forming 5

Hollow grouting with bone porcelain mud, its density are generally smaller than solid grouting, which is about 1. 65-1. 8 GCM stability of ceramic slurry demand is higher, the fineness of generally fine than solid grouting, mesh sieve sieve more than 0. 0 2%. 5%, or 10 & mu; M the following particles accounted for 80%. Bone China grouting, should be the bone China model face clean, shall not leave dry mud or dust. Bone China model should keep at around 5% of water content, too dry or too wet will cause the defects of bone porcelain body, and reduce the labor productivity. Proper heating bone porcelain model can accelerate the diffusion of water surface, good for suction pulp, but there is a limit, otherwise counterproductive grouting, casting speed and bone China mud pressure head shoulds not be too big, so as to avoid the defects on the surface of the note, and should make bone China model in the air along with the injection of mud. Stripping of appropriate moisture content shall be determined by the actual situation, generally about 18%. Due to the bone China mud some thixotropy and adhesion, accused of pulp, if improper operation prone to mud, bumps and other defects, so the general hollow grouting with centrifugal grouting method. ( 2) Solid solid grouting is bone China mud into the cavity between the two gypsum mould surface, bone China mud moisture absorbed by bone China model from two sides, between two modules in the formation of note, and no excess sludge discharge grouting method. Bone China body shape and thickness is determined by the cavity formed of two die face. When bone porcelain body thicker, near the working face slab layer is dense, central part far from working face is osteoporosis, bone China body structure of the homogeneous degree will be affected by set. Due to the moisture in the mud are absorbed and the formation of bone porcelain clay, injection amount of mud will be reduced, therefore, when grouting in mud, until the hole in the mud all into billet, the biscuit firing process is: solid grouting & rarr; Stripping & rarr; Dry & rarr; Sponging & rarr; Inspection & rarr; Biscuit firing solid grouting in general than the hollow grouting slurry in mud have higher density ( At about 1. 78 g/cm3 to solid grouting) , thickening degree is higher, fineness can be slightly thicker, more than thousands of mesh sieve is about 1% ~ 2%. Solid grouting can shorten the formation process of bone porcelain body. Bone porcelain products can be thicker, can make both sides have a decorative pattern and large in size and shape more complex bone porcelain products. But solid bone China model of grouting is more complex, and the hollow grouting, the uniformity of injection parts is not ideal, usually away from surface to small, sometimes appear statified phenomenon or burnt when detonation phenomenon. Solid grouting operation, in order to get dense bone porcelain body, after the mud into bone porcelain model, oscillation, air bubbles escape, until slurry is filled. In addition, reserve release air path. Solid slurry is generally used in special-shaped plate ( Such as fish bone porcelain dish) The production of class. ( 3) Strengthening grouting grouting forming manual operation is more, the production efficiency is low, the bone porcelain body enough density, shrinkage is bigger, more bone China products defects. Especially note made of large, thick bone porcelain body, when bone porcelain body has not been formed to the thickness, but farther away from the mold wall mud is not dehydration, and close to the plaster mold wall bone porcelain body are likely to leave the mold wall, received at this time, if not the mud poured out, it may spread to the moisture from the mud hardened mud, make body collapse collapse or deformation. In order to improve the shortcoming of general grouting method, in order to improve the quality of bone porcelain, reduce labor intensity, improve labor productivity, technical measures, to strengthen the grouting. — Tangshan bone porcelain tableware wholesale to be continued. 。 。 。 。 。