Bone porcelain glaze 15

Bone porcelain glaze slurry preparation and the common defects of the glazing cause and prevention of common defects caused by bone porcelain glaze slurry preparation and prevent method slurries will because of improper operation, the equipment in the process of preparation of abnormal reason will cause some defects (such as 1) Gauge when bone porcelain glaze slurry mixture formulation inaccurate or ball milling time is too long or too short will appear uneven thickness of glazing, difficult to control. With the suspending agent ( Such as suzhou, etc. ) Too little, the suspension is bad; Electrolytes such as add wrong also can appear flocculation and precipitation phenomenon, make the bone porcelain glaze slurry performance, uneven thickness of bone porcelain glazing, difficult to control. Bone porcelain glaze ball mill carefully, slurries illiquid, have gelled phenomenon, prone to & other; A crib & throughout; &ldquo仍然; Wave grain & throughout; Wait for blemish. Bone porcelain glaze ball mill is too coarse, the suspended poor, poor adhesion, slurries thin hard glazing, prone to glaze thinner phenomenon. ( 2) Dirty bone porcelain glaze slurry processing sieve, such as the phenomenon or impurities mixed with the hook, in the subsequent process may cause dirty point defect, as long as strengthen the inspection and iron mesh, generally there is no problem in this process. Because the network leakage caused by dirty points less. ( 3) Precipitation less serious suspending agent added, plus fault, water and electrolyte, ball mill, time is too short will cause more precipitation phenomenon. To distinguish these reasons can pass the test, the particle size, pH value, try to burn to check analysis, and take corresponding measures. ( 4) Temperature changes in the general bone porcelain glaze more mature to join as a suspending agent, such as the suzhou soil, when the clay quantity change, will cause the bone porcelain glaze mature temperature change ( 5) Adhesion is not strong adhesion is not strong general clay quantity insufficiency, the particles are too thick, additives caused by inappropriate. Bone China ( Bone China) Fritted glaze is usually to add 5% ~ 10% suzhou soil to improve its suspension and associativity also useful biological polysaccharide as a suspending agent. When lack of adhesion, can be appropriately in cellulose, such as Arabic gum, xanthan gum associativity, enhanced adhesion ( 6) Swearing when adding electrolyte too much or bone porcelain glaze is frit melted is bad, because too much water soluble substances, in the mouth after bone porcelain glazing & the edge of the thin parts, such as other Swearing & throughout; Phenomenon, the surface is rough. Bone porcelain glazing cause of common defects and the prevent method ( 1) Bone porcelain glaze deficiency after polishing of the surface of the body have appeared in the process of oil, dirt and take put are likely to cause lack of glaze defects such as knock against. Biscuit firing billet after polishing to use alkaline or detergent cleaning, operation on the operators are not allowed to have no pollution, the bone porcelain glaze used shall have good adhesion so as not to knock against, or appeared in the process of take put hand rub off (caused by defects such as 2) Uneven thickness of bone porcelain glazing too thick or too thin will cause defects. Bone porcelain glaze layer too prone to roll thick glaze, orange glaze defects, such as bone porcelain glaze layer appears thin thin like dry. Because has a white bone China, bone porcelain glaze for white, bone China is difficult to distinguish the thickness of the glaze layer after glazing, generally in adding proper amount of organic pigments, such as red, green or blue for observation glaze layer thickness, check the quality of glazing ( 3) Bumps in the process of glazing, part of dry glaze on bumps phenomenon to appear on the product, should make when repairing bone porcelain glaze billet. Bone porcelain slurries often sieving, spray gun to often clean, regularly check the nozzle ( 4) Swearing on bone porcelain glaze spraying mouth inside and outside the glaze should have corresponding cover, avoid simple gush or simple gush out without cross cover, so also more prone to water soluble ion concentration in the mouth, appear & other Swearing phenomenon throughout the &; 。 — Bone China bulk, to be continued. 。 。 。 。 。