Bone porcelain kiln furniture choose 2

( 4) Mass of silicon carbide SiC materials due to their high strength, high thermal conductivity, low thermal expansion coefficient, heat resisting impact is good, can be used for all kinds of conditions of use harsh environment, is an application of a wide range of refractory products. SiC refractory quality can be divided into: mullite combined with silica, clay and carbon oxide combined with silicon carbide, nitride and Sialon ( Theron) Combined with silicon carbide, reaction sintered silicon carbide and silicon carbide, combined with silicon carbide plate and pillar of clay products is widely used in the bone porcelain industry. ( 5) Bone porcelain fused quartzose fused silica type kiln furniture is quartz aggregate, using clay as binder in the production of refractory products, due to the small thermal expansion coefficient, quartz and high temperature viscosity is large, so such bone kilns with good thermal shock resistance. But fused quartzose materials when used at high temperature for a long time, because the changing of the Shi Yingpin type will cause the material is loose, and reduce the service life of materials. ( 6) Other aluminum titanate ceramic refractory is low expansion, industry application is nearly a decade, its melting point is 1860 ℃, using temperature is 1600 ℃, lower than the general expansion materials ( Cocoon bluestone, spodumene aluminum phosphate, etc. ) Using high temperature and low expansion coefficient, close to zero. Aluminium titanate and cordierite and mullite, silicon carbide and nitride compound and a variety of materials used in different kinds of kilns of bone material. Bone porcelain saggar ( 1) The classification of the commonly used bone porcelain saggar: according to the usage of bone porcelain glaze billet, bone China, Bone China) Production of commonly used sagger mainly trained to burn with sagger and glaze with sagger two kinds. (1) bone porcelain biscuit firing with sagger biscuit firing with saggar is copying more sagger, commonly used biscuit firing saggar. Bone porcelain biscuit firing with sagger side in contact with the bone porcelain products generally to refractory coating, in order to prevent the bone porcelain saggar and bone porcelain body of adhesive. (2) the bone porcelain glaze to burn with sagger glaze with saggar is primarily for improving bone porcelain products loading quantity or improve the firing atmosphere generally at the bottom of the contact with the bone porcelain products to brush paint, other parts of the brush fritted glaze, act as protective atmosphere, make the bone porcelain glaze smoother. Commonly used burn saggar glaze. ( 2) Quality requirements: in addition to the regular requirement for bone porcelain saggar, also note the following points. (1) bone porcelain billet with copy of sagger higher machining precision, to like make bone China products, production of sagger, both surface finish and neat degree of bone China products, strict requirements, otherwise products are prone to defects such as deformation, pits. (2) the bone porcelain saggar support part as low as possible, in order to increase the loading amount, improve the utilization rate of kiln. (3) the bone porcelain glaze burning with sagger have craze is not allowed to reduce slag even collapse phenomenon. ( 3) Commonly used technology of sagger manufacturing process is commonly used for: raw material & rarr; Crushing & rarr; Ingredients & rarr; Kneading & rarr; Stale & rarr; Forming & rarr; Dry & rarr; Burning & rarr; Besmear bottom & rarr; To use ( 4) Bone porcelain saggar firing saggar is special refractory products, should be based on its characteristics and requirements, design reasonable firing system and operational procedures, sagger burning need to be in 30 ~ 100 ℃ temperature is higher than the products high fever presintering temperature, and thermal insulation, high temperature reaction, avoid in use for reheat shrinkage and shakeout, out of shape, craze. Good bone porcelain saggar inside at the bottom of the smooth to use. Shed board bracket bone China ( Bone China) Glaze can cook a lot of use shed board or stents. Many biscuit firing bone porcelain products such as bone porcelain cup class also extensive use of plate burning. Commonly used stents. Coating to prevent bone porcelain product and kiln furniture, kiln and kiln furniture of adhesive to be used as a refractory coating as isolation agent split bone porcelain products and kiln furniture, don't let them direct contact. Sometimes in order to prevent the work from rough kiln slag also want to brush the paint on the bottom. Kiln furniture paint general points to prevent bond coating, prevent the bottom of the bowl shakeout coating and coating of protection. To prevent bond coatings in sagger and saggar contact each other side of the mouth, coating material for bone porcelain saggar material. — Bone China life of bowl to be continued. 。 。 。 。 。