Bone China forming 7

( 3) Electrophoresis electrophoresis grouting is according to the clay particles in the mud, Negatively charged) To move in to the anode current, bone porcelain blank to the anode and deposited on the inner surface of the metal mould and forming. Grouting used in the model of bone China general use of aluminum, nickel, cobalt plating iron and other materials to manufacturing. The operating voltage of 120 v. Current ( A direct current) The density is about 0. 01 a/cm2, the inner surface of the metal mould should be coated with glycerin and mineral composition of coatings using reverse current bone porcelain body mold release. With electrophoresis method injection forming bone porcelain body, the structure is very uniform, bone China body generated faster than when gypsum mould forming nine times the left and right sides, but note made large bone porcelain products there are difficulties, to continue to study. From bone China mud solid phase particle size, dispersion characteristics, belong to the sol slurry mixture, are highly dispersed system, with a large surface area, has the colloidal properties, such as adsorption ion, generated with the spread of the potential electric double layer and so on, so the outside under the action of electric field can produce electrophoresis, so any bone China mud grouting can be electrophoresis forming. Electricity often use high concentration slurry grouting forming, composition segregation is tiny, segregation amount along with the increase of applied voltage. At high concentration, because a lot of interference between particles, make jostled each other between the particles have a drag effect & throughout; , namely fast moving particles dragged slow motion of particle movement, together with the increase of bone China mud concentration delay effect is more obvious, and therefore did not produce the relative motion of the particles of segregation. When sediment precipitation, bone porcelain slurry concentration is declining, the stable forming electrophoresis grouting control bone porcelain products thickness to adverse, therefore to complement the mud, and to maintain a constant slurry concentration. Operation process operation process generally bone porcelain grouting is commonly: clamping & rarr; Grouting & rarr; Suction pulp & rarr; Put a pulp & rarr; Stand up & rarr; Stripping & rarr; Stick bone China sticky trim for grouting forming mould clamping is a very important step, bone China when clamping mould working face is clean, put pulp cavity mould clamping a suction slurry injection whether there is impurities inside the stand parting, clamping are closely and directly affects the quality of the product. Bone China mold together after, began after grouting to fill, need to constantly add slurry, make the basic uniform wall thickness. After being mud suction to the required thickness, and then put the pulp ( Solid grouting cannot put slurry, and keep full slurry) 。 For bone China mud has thixotropy, slurry should be appropriate to shake before mould, otherwise prone to mud of phenomenon. After put pulp, such as appropriate period of time, such as bone China body continue to discharge water, after reaching the intensity of mold release, and transferred to the repair process. Among them: eat pulp is bone China mold adsorption of moisture in the mud, the formation of bone porcelain body process; Put the pulp is also called air plasma is when the bone porcelain body formation thickness, excreting excess sludge process. Out of mud returns to slurry pool, Or cans) 。 Way back to the slurry with artificial side barrels back to pulp; (2) the natural pressure to pulp, the use of slope of the pipeline, the bone China mud flow back into the mud pit; (3) using slurry pump withdraw excess slurry; (4) negative pressure slurry, it is using bet type pressure grouting pipes, formed by using a vacuum pump suction, the bone China mud pump back to the mud tank. In the above a variety of ways, besides, which kind of, all belong to pulp pipeline back. Stand up & throughout; Also known as consolidation. Put pulp after body is soft, don't release immediately, need over a period of time continue to discharge the bone porcelain body moisture, increase its strength, this paragraph of time is called consolidation. Consolidation is forming one of the main process of grouting, and its duration is about to eat half of the time. — Bone China gift wholesale to be continued. 。 。 。 。 。