Bone porcelain glaze 12

Process performance requirements bone China ( Bone China) Is generally in the element has been firing porcelain glazing on the body, with ordinary raw glaze have bigger difference, it can't like general raw glaze, can rely on body suction makes slurries are attached to the bone porcelain body firmly, the bone China ( Bone China) The glaze slurry performance requirements are as follows. ( 1) Raw material purity, weighing accurate glaze with raw material is more pure than bone porcelain slab with raw materials, formula weighing more accurately. ( 2) Granularity appropriate glaze slurry fineness directly affect the consistency of slurries and suspended, also influence the glaze slurry and adhesion ability and the glaze melting temperature of billet and bloom glaze firing for performance and glaze quality, after the bone porcelain glaze slurry is thin, the bone porcelain glaze slurry suspended, the better, the bone porcelain glaze melting temperature reduced accordingly. Bone porcelain glaze billet closely and a reaction between the two good adhesion, thus improving bone porcelain glaze layer organization, improve the quality. Bone porcelain slurries carefully not only increase the cost of ball mill, also can cause silicone appeared in the process of grinding, it is difficult to & other; Net & throughout; And it's easy to have a brown eye defects. ( 3) Density is suitable for the same set of yet porcelain glaze glaze slurry density refers to the concentration of slurry, thus against the bone porcelain glaze and glaze thickness also plays a decisive role. Dense bone porcelain slurries can make the glaze shorter time; Vice density is too small, we have to increase the glazing time, otherwise, due to the thin glaze layer dry enamel. Add to the amount of water can dilute slurries in order to increase fluidity, but the density of slurry decreases, even loss of thixotropy, reduce bone porcelain glaze adhesion on bone porcelain blank, and make the material particles in the slurry sinking rapidly. In order to ensure not to change density and reach the purpose of adjusting the viscosity and thixotropy, often must be the introduction of additives or take obsolete technology to solve the bone porcelain glaze slurry fineness of the contradiction between the performance and consistency. ( 4) Suitable bone porcelain fritted glaze adhesion must have corresponding adhesion, formula in general should choose appropriate rheological property and adhesion of clay or organic matter suspending agent to reduce moisture content and increase the strength of the bone porcelain slurries. Can use, glacial acetic acid, sodium tripolyphosphate regulate bone porcelain glaze slurry rheological properties, such as using the Arabic gum or cellulose to improve adhesion. Bone porcelain glaze slurry preparation problems ( 1) Clinker quality because of the clinker melt quality, besides influence bone porcelain glaze quality of bone porcelain glaze performance also has a great influence, bone porcelain glaze slurry preparation, pay special attention to check the amount of clinker. If the frit water quenching is bad, there will be a lot in the process of ball mill ball frit, it is hard to fine grinding, make the frit change ratio and other bone porcelain materials, proportion is not accurate. If uneven clinker melt system, such as have & other; Raw & throughout; Phenomenon, the soluble content might increase bone porcelain glaze slurry performance ( 2) Ball mill cleaning should be regularly check the weight of the ball mill ball in the stone, the ratio of particles and the number of globular frit, and carry on, to clean up ( 3) Piecewise abrasive slurries preparation, good adopts segmented into the grinding method, first the frit hard material such as crushing, after reaching corresponding fineness, add soft clay or biological polysaccharide mixing organic additives (such as 4) Fritted glaze preparation period, especially the use of xanthan gum, biological polysaccharide as a suspending agent of bone porcelain glaze is unfavorable and storage time is too long, not too much ready, also do not use ground now, lest appear special circumstances, such as feed of mismatched gave corresponding leeway to normal production, general control in 1 ~ 2 can be within a production cycle. — The bone plate to be continued. 。 。 。 。 。