Bone porcelain glaze color defects on 4

( 4) Bone China has concave and convex surface, scratched, if not, excess alcohol semen or dust and residue in the film edge, roast flowers & film edge and shading formed after the other; Scissors trace & throughout; 。 ( 5) Furnace charging too close, the impact of ventilation, make the film failed to volatilize very good in barbecuing, causing membrane ash remaining on the bone porcelain glaze, leave a film. Or in baking furnace gas medium with a large amount of dust, when the film on the bone porcelain body be baked to soften, dust adhesion in remaining in the bone porcelain face film with film. To overcome the way: ( 1) Stick bone porcelain color paper thin film can not be mixed with impurity, thin film material of polyethylene polythene butyral ash is higher than 0. 14%. Alcohol can't contain iron, the modulation of ethanol aqueous solution to cannot be mixed with purity. ( 2) Paste liquid impurities or dirt, and should not be too thick. Applique careful operation, color paper, leveling scrape off the excess alcohol solution, good bone porcelain body to orphan cover, prevent dust pollution, after dry up burning cannot place time is too long, full furnace burning arrangement can't too close, lest affect ventilation. 5, embroider meaning: also called sticky, sticky flower, flower, flower face deformity. Symptoms are: flower surface parts damaged bone China products, color separation or discoloration. Defect classification flower surface defects, produce ceramic decals, handling, packing, full furnace and furnace burning process. The reason: 1) Cut flowers, overlapping color paper unaligned, cut flowers, flowers, flowers and overlapping color porcelain technique is too heavy, not light with light, the color paper wipe. ( 2) Decal porcelain not scrape, wipe dry be wounded, bone plate, bone bowls, lower deformation bone porcelain products no suitable become warped TongKou carry, backpack and take put hurt flower surface color porcelain. Decal porcelain on hold too long into the oven bake lead to broken flower flower. ( 3) Roast flowers, packing put too tight, the color porcelain touch each other scoured the lack of flowers. To overcome the way: ( 1) Cut flowers, multilayer overlapping and alignment, a flower, flower, overlapping color porcelain. Light to take light put stacking level off, do not hurt surface so as not to embroider flower. Bone plate, bone bowls after decals products, when a suitable match TongKou become warped, under the type size ( Put a barrier between parts and parts of ballastless cake) Should there is space size to make products up and down. ( 2) Applique color porcelain flowers, surface wet not scratch bake in time after dry flower, cannot be stored for too long, furnace charging arrangement not too loose or too tight, so as not to collide with each other, with finger can't touch the flower surface furnace operation. 6, sweat stain meaning: bone porcelain color porcelain bazi or mans mouth ( No glaze along the mouth) In black on the pitting, classified bone porcelain bottom foot sticky dirty, produced in the bone porcelain decal process. Causes: in the operation of flowers and scratched, the pattern of a single color and new material is applique liquid washing and flow milling and mans mouth parts, and gradually infiltrated the unglazed, barbecue it appear black after pitting called sweat stain. To overcome the way: ( 1) Bone bowls class after flowering, bowl should be down the horse, glass mans mouth parts should shun set up, and no multi-layer stacked, bone porcelain class after flowering, one thousand party can overlay piece cool piled up bowls of bone, bone porcelain, bone China plate ( Mans mouth) Should be immediately after scratched will leave decals membrane liquid wipe dry can overlap. ( 2) Every store more white bone China cups and bowls of bone products, mouth, dam before the bone porcelain decal grinding time, remove the adsorption of mouth, dam of bamboo sweat. ( 3) Washed their hands before decals, keep hands clean at work. — Tangshan bone China coffee set to be continued. 。 。 。 。 。