Bone porcelain glaze color defects of up to six

12, bone porcelain color meaning: also known as bone porcelain flower face lacklustre or color FaMu not smooth. Symptoms are: bone porcelain color porcelain flowers face mask color light faults prolific images in painting color baking process. The reason: 1) Bone hand-painted famille rose porcelain, ancient color coloring too thick, extension of new color material sex too dry too thin, can make the color isn't bright FaMu after burn. ( 2) Not bake to burn colored porcelain due to rapid changes in ambient temperature by thermal quenching or contrast can make a layer of water on the surface of bone China products cover or pigment contact the volatiles of acid. ( 3) Bone China roast flowers, ran to the soot within bone kilns, sulfur gases or a large number of moisture, make the pigment absorbs the water lead to color, or because of baking furnace temperature height, pigment comprehensively melting temperature has not been achieved, the individual pigment subcooling. When the temperature rose to more than 600 ℃, the bone porcelain paint on the paper began to melt, the barbecuing indoor if there are any powder adhesive on the pigment, the bone China color matt surface, bone China lithograph applique color paper burn area is in commonly 780 - baked 830 ℃, if the part is below 740 ℃ color matt, if less than 700 ℃ most matt color, screen printing decal paper of roasting temperature range generally if most color is below 750 ℃ to 800850 ℃ lacklustre. ( 4) Bone porcelain decorating firing kiln in serious not ventilation, thin film, printing ink, oil of jinshui failed to volatilize from outside, also can affect the color. To overcome the way: ( 1) Bone China hand-painted ( Ancient and enamel) Shoulds not be too thick, all kinds of pigment mature temperature to allocate. Paint color, attention should be paid to west red color cannot and mixed with other colors. Otherwise, the other colors after baking will burn the western red melt away. Master fuel properties and the thickness, color is too thin frame is thin, too thick will flow in barbecuing, famille rose pigments chap, surprised. Infiltration phenomenon, performance by destruction of the bone porcelain body. Bone China flower surface color fresh, bright, vivid, glossiness is good after barbecuing. ( 2) Not bake to burn colored porcelain not pile up in humidity and temperature changes in place, acids things should be near from painting workshop and decorating firing kiln. ( 3) Check the underground water level and take measures to eliminate baking furnace bottom water, maintain good ventilation in the furnace, the furnace of fire, smoke leakage fire board for repair, prevent soot, sulfur gases and water vapor into the furnace, the bone porcelain bake take use of fuel can't water too much, workplaces to keep clear, pay attention to moistureproof, ceramic products drying kiln, especially when the baking temperature rose to more than 580 ℃ C, take indoor dust float in the sky. ( 4) Bone porcelain bake spend low temperature not appropriate to improve the color temperature, bone China lithograph decals roast temperature is not lower than 745 ℃, screen printing decals color paper is not less than 760 ℃. 13, bone China color layer dry meaning: bone China flower surface layer of dry matte color, faults, images created in painting and baking process. Reason: when painting pigment and glaze layer is too thin is not dense. Roast flowers subcooling, bone China products present dry pigment. Overcome: increasing the thickness of the pigment, subcooling bone porcelain products do not add heavy fire. ( Refer to the chapter 12 & other; Bone China receive color & throughout; ) — Tangshan bone China mugs customization to be continued. 。 。 。 。 。