Bone China forming 2

( 2) Can be molding molding is to make the state of the plastic material made from plastic deformation under the action of external force and bone porcelain body method. The bone porcelain blank moisture content is 18% ~ 26% commonly, should have a higher yield value, forming the bone porcelain blank form stable enough; Also should have the larger deformation, to ensure that the bone porcelain blank when the forming without fracture. According to the operation method can molding can be divided into casting, spinning, rolling, plastic pressure, seal carving set, etc. Can molding method with and without mold, mold type spinning plaster mould and knife; Roll plaster mould and cast iron roll head or plastic roll: plastic pressure, seal billet plaster mould; Sculpture, throwing all need not model. ( 3) Compacting press forming can be divided into dry pressed into, semi-dry pressing forming, etc. , generally use a metal mold. Dry little bone porcelain blank forming is water cut in bottom mould press, formed by a lever is equipped with upper die pressure and particle compact bone porcelain body method, due to low water cut, pressure big, so after bone porcelain blank forming dry shrink, shape accuracy, less deformation, the drying time is short. Used by dry pressing forming blank need to made of granular powder, commonly used in industrial production of ceramics, building ceramics and refractory materials. ( 4) Isostatic pressing forming isostatic pressing forming pressure forming is improved. It is different from compressive bar forming blank is limited to two surface pressure. Operation of granular billet has elastic mould, Commonly used rubber or plastic) Seal, then into a liquid or gas pressure container, pump pressure of liquid or gas to mold transfer uniform pressure by liquid or gas medium and passed to the bone porcelain blank, make the bone porcelain blank is compacted into the similar of the billet and die. To the isostatic pressing forming blank water content is 1% ~ 4%, can greatly improve the forming pressure. Because isostatic pressing forming bone China to receive strength evenly in each part of the body, and high pressure, narrow, burning into smaller deformation degree. But because some empty spray granulation particles, particles after compression fracture, glaze burning when it's easy to have a brown eye defects. This is the isostatic pressing forming manufacturing with fine porcelain often appeared a problem. Bone China ( Bone China) Common forming methods. Bone China to choose the forming methods of forming method in the shape of the bone China products, quality requirements, such as batch processing as the main basis, considering factors such as cost, degree of difficulty to make, to determine the process routes, choice forming method, often from the following a few party (1) bone porcelain product's shape, size, thickness, etc. General and complex shape, large, thin wall bone porcelain product note surface can be used to consider slurry forming method, and has a simple shape of rotors vessels can use spinning or rolling method (2) the bone porcelain blank process performance. Plasticity is good bone porcelain blank is suitable for molding method, poor plasticity of bone China, can use grouting molding or pressing forming (3) bone porcelain product yield and quality requirements. Production big bone porcelain product as far as possible the molding method, production of small bone porcelain product can grouting forming method (4) forming equipment is simple, the intensity of labor is smaller, better working conditions (5) higher technical indexes and economic benefit is better 6 enterprise actual mastery level of technology, for sure, try to adopt the method of you are good at. Anyhow, when choosing forming method, hope to ensure bone porcelain products under the premise of quantity and quality, short production cycle, the cost of a forming method. — Tangshan bone porcelain cup to be continued. 。 。 。 。 。