Bone porcelain glaze 11

Bone porcelain glaze elasticity and tensile strength of the influence of billet glaze adaptability with high elastic glaze, able to adapt to stress produced by bone porcelain glaze billet deformation difference, even if the bone porcelain glaze billet expansion coefficient difference is bigger, the bone porcelain glaze layer nor the corresponding fracture. The stand or fall of elastic and glaze layer thickness and chemical composition of bone porcelain glaze. In the fine ceramic glaze is MgO style, for example, its tensile strength compared with high CaO BaO, ZnO is decreased obviously, however, the combination of the billet glaze is not bad, no crack glaze. This is because the introduction of MgO style reduces the expansion coefficient of glaze and the modulus of elasticity, so as to make up for itself is a disadvantage of low intensity, the combination of increased bone porcelain glaze and billet. If the introduction of CaO, bone porcelain glaze although tensile strength increased significantly, shaft crack have increased, however, the reason was that the glaze expansion coefficient and elastic modulus are improved obviously. But in general the raw glaze, the glaze calcium can combine with high amount of aluminum billet is very good. So even if bone porcelain glaze expansion coefficient is constant, tensile strength and modulus of elasticity is good for the combination of the billet glaze for, a research is needed. Whether bone porcelain blank or bone porcelain glaze, the elastic modulus of the head, elastic deformation capacity is small, the bone porcelain glaze the adaptability to the elastic deformation ability is lower than its adverse effect. High tensile capacity of the billet, glaze, glaze cracks and slab crack resistance also increase. Bone porcelain glaze layer thickness of billet adaptive bone porcelain glaze layer thickness is different, the influence of calcining process of change is also different. In the general common glaze thick ( 0. 1 to 0. 2mm) Glaze composition within the range of variation of stress is glaze particularly obvious. Thin glaze layer when burnt components change accordingly, bone porcelain glaze expansion coefficient decrease too much, and the middle tier of the relative thickness increases, thus to improve glaze medium voltage stress. But too thin glaze layer dry glaze phenomenon will occur. When the bone porcelain glaze thick & gt; 0. 5 mm, glaze stress drop to the minimum to no longer continue to change. The type of bone porcelain glaze and billet bone porcelain glaze thickness on the stress influence is also different. Bone porcelain glaze slurry preparation and glazing process of bone porcelain glaze slurry preparation of glaze slurry preparation is used to glaze glaze formula proportion of weighing preparation, such as water, electrolyte used in ball mill with appropriate fineness, concentration and liquidity into slurry process. Bone China ( Bone China) Glaze is commonly fritted glaze, a small amount of products use raw glaze. The fritted glaze is general for half the fritted glaze ( Part of the fritted glaze) And all the frit pomelo. Part of the fritted glaze is refers to the formulation of except the frit and part of clay minerals such as raw materials. The fritted glaze is to point to in addition to water and electrolytes, formula of all raw materials for the frit. The preparation of ceramic fritted glaze ( 1) Glaze formula lead-free glaze glaze formula for (commonly The mass fraction) : suzhou soil clinker 90% ~ 95% 0 ~ 0 5% ~ 10%, and other additives. 5% ( 2) Preparation of general use and clinker grinding, plus clay or other additives segment into the milling process. Material: the ball: water = 1: ( 1. 5 ~ 2. 0) :( 0. 4 to 0. 6) Bone porcelain glaze slurry fineness: more than 250 mesh sieve is 0. 01% ~ 0. 02%, or with a microscope 10 & mu; M particles under 75% ~ 80%, larger particles does not exceed 30 & mu; m。 The preparation of raw bone porcelain glaze bone China ( Bone China) Raw glaze with conventional porcelain raw YouZhi method is basically the same, no longer here. Bone porcelain glaze slurry process performance requirements and pay attention to the problem of bone China porcelain glaze is about 1/11 of the billet weight, but its quality has a direct impact on the performance of products and grades, and to give a person the sense with intuitive, so in addition to formulate reasonable formula, should also pay special attention to the preparation technology of the glaze. — Bone bowls to be continued. 。 。 。 。 。