Bone porcelain blank 02

Alkaline oxides are: K2O, Na2O, CaO, MgO style, FeO, Li2O, BaO, ZnO, etc. Neutral oxide are: Al2O3, Fe2O3 and other acidic oxides are: SiO2, P2O5, TiO2, ZrO2, B2O3, etc. Bone China is usually based on neutral oxide R2O3 billet type, make the quantity of the material is 1 mol. Also can R2O and RO number of molecules as a benchmark, the sum to 1. Mineral composition representation in the heart of the bone porcelain body formula contains the same kind of mineral content in the raw material together, the pure theory of clay minerals content, bone meal, feldspar, quartz to represent the bone porcelain body ejection, this method is called mineral composition method. This method can only reflect some rough situation, batching calculation is relatively simple in mineral composition. 。 Triangle coordinate graph method to coordinate method, applied in the other porcelain is more, is a commonly used method of daily-used porcelain in the bone China ( Bone China) With application in general is a good one component, make sure to change the other three components. Bone China configuration design principle and formula to determine the formula on the basis of the amount and type of ceramic raw materials and products of the production process and final bone porcelain products has a direct relationship, a good formula is the foundation of making fine bone China products. Determine formula before must first to the selected bone ceramic raw material chemical composition, mineral composition, process performance, and the sintering performance and reserves for full detailed understanding. Only so can scientifically guiding formula test work smoothly. Basic requirements for bone porcelain body as follows: (1) the composition of bone porcelain blank can meet the requirements of product appearance quality and intrinsic performance (2) the various components mix, including the main raw material, water and other additives should be evenly distributed in the bone porcelain blank (3) the bone porcelain blank particle fineness requirements of each composition, have reasonable particle size distribution, to reduce the cracking and other defects in the process of forming and drying; (4) plastic forming and grouting with air content in bone porcelain blank should be to reduce as far as possible, lest reduce bone porcelain body strength and product performance indicators of the senses. On the basic requirement of the body, determine the main basis of bone porcelain body formula basically has the following several aspects. ( 1) Satisfy the use of bone China products demands the use of bone China products, namely bone porcelain products to reach the corresponding physical and chemical properties, can be used. Bone China ( Bone China) As a high-quality porcelain, want to have a white and light transmittance, bone porcelain glaze quality of products, such as gloss, color, etc. To meet the corresponding requirements. In preparation, therefore, should consider to sintering properties, formulation composition to within a reasonable range, to ensure that the bone China is good, has low water absorption, good anti-fouling. ( 2) Meet the requirements of production process of bone China ( Bone China) Products need to be made through multi-channel processes, design formula property and high strength should be fully considered performance, make the operation easy. Should choose appropriate clay and electrolytes, make the bone porcelain pug plasticity, fluidity, green strength, drying shrinkage, sintering shrinkage, sintering temperature and sintering range meet the corresponding requirements, also requires a formula in the production process, in quite some time bone porcelain clay materials to stable performance, strong maneuverability and repeatability. ( 3) Reasonable economical design formula, as far as possible choose source range, the price is cheap, abundant, stable quality, easy to transport bone China material. Considering the economy, the bone porcelain material emphasizes the local materials, amount to use, make, etc. ( 4) Personal and environmental requirements of the design formula, as far as possible need not those who cause harm to person or environment easy to raw materials, such as raw material of the toxic, strong corrosion. — Bone China tableware to be continued. 。 。 。 。 。