Bone porcelain glaze color defects on 1

Section bone porcelain stick, painting flowers 1, popcorn meaning: bone China flower surface all or partial crack, fall off, burst and broken flower, etc. , like eating mulberry leaves. Defect classification bone porcelain picture defect, produced in bone China decals, bone China gold, such as chores and burning furnace process. The reason: 1) Bone China products, Decoration) Bone porcelain glaze and pigment of improper connection material ratio of colloidal substance content too little or too much when baking flowers are likely to produce blowout of face of the flowers. ( 2) Ceramic decal paper idea in the process of printing color too much pressure, such as silk screen printing film decal color layer is too thick, when combined with the color roast cooling too quickly or bone porcelain high hardness also cause blowout of face of the flowers. ( 3) Color paper improper safekeeping, color paper adhesive material absorption of the moisture in the air. ( 4) Bone China decal solution concentration ratio of improper, ceramic decal solution should be according to the change of season, climate and membrane layer thickness properly adjusting the proportion of alcohol and camphor oil. Such as winter season, room temperature is low, the membrane layer due to harden and soften the slow speed, easy to produce bone porcelain color paper up with fetal porcelain not firm adhesion phenomenon, then the camphor oil shall be appropriately increased in bone porcelain decal solution, membrane layer thickness increase more more, otherwise there will be a bubble, the temperature is higher in summer and autumn, the film is easy to soften, ceramic decal solution of camphor oil to reduce appropriately, otherwise appear wrinkles and popcorn. ( 5) Bone porcelain decal careless operation, advance will wipe and clean porcelain face, bone porcelain color paper on the dust, flower surface adhesion is abate, paste after the bubble, not timely, leveling bone porcelain color paper inside the air clean, has not been ruled out of a paste or too much, room temperature is too high, alcohol is volatile, because the paste time is too long and hard to level off, lead to bubble is barbecuing, due to heat expansion and rapid discharge of air inside the bubbles to break the color paper and material layer resulting popcorn, some is not even alcohol with color paper dry stick, bone porcelain color paper is not attached to the bone porcelain body glaze, which contain air, roast popcorn after flowers; Or because the stick thin film color paper ( Stick it, should be shiny side by bone porcelain face) This is call for popcorn. ( 6) Applique place the temperature too high, Higher than 36 ℃) The air is dry, too much color paper binding influence each other popcorn. ( 7) Baking process medium is the cause of popcorn: bone China products from preheating to calcining zone, rapid temperature rise, make the volatiles sharply to volatilize, break through the color in color layer cracking or contraction. ( 8) Bone China color paper itself quality has a problem, popcorn is produced by the whole flower surface rendering of popcorn. To overcome the way: ( 1) Before the bone porcelain decal production, decals operation methods should be determined according to the bone China color paper performance and baking temperature, According to the bone China color paper thin film thickness and temperature of the bonding agent concentration, the film thickness of color paper, are at a lower temperature can be appropriately thick, on the other hand, the paper film is thinner, at high temperature can dilute some appropriately. ( 2) Ceramic decal paper when printing, service kind of pigment pressure set time shoulds not be more than three times of screen printing paper transfer printing shall not exceed 40 microns thick place. ( 3) Strictly checking the quality of bone China decals, unfavorable choose on high white glaze hard-paste porcelain color layer is too thick printing paper, should choose plate offset printing color paper or color layer is very thin silk screen color paper, checked prior to use test rear can put into production, ceramic decal paper storage time can't more than a year, in order to avoid color paper ink aging, easy cause popcorn. — Tangshan bone plate to be continued. 。 。 。 。 。