3 under the bone porcelain glaze defects

( 2) Water, according to the size of the scope of bone China flower surface, decided to pen. Lift pens from water bowls of bone pen down, along the pen mean to the appropriate level of material to water, pulling the tip to the bone bowls along the belly big written pointed shape ( As shown in figure 4 - 01) Then write water, keep the moisture content of the tip of the head. Otherwise there is less water, pen MAO ceramic billet surface to clean up the white powder easy to hit, effect. Water put pen to paper to the balloon, the calligraphy should be from left to right, one is writing down the head tone points down to the bone China after the billet surface excess water, lateral to pen blot ( Is called a closed water) 。 Large area of water, the water in water is not enough. Available methods of holding pen holding pen, finger pressure will be written, when water pen material is difficult to continue to go, just can use forefinger, unknown to written down on the end, then squeeze out water until points after a large area of water. As shown in figure 4 - 02 larger bone porcelain flower surface water can use a few pens up. Water also must pay attention to water and bone porcelain billet, the relationship between bone porcelain slab thickness, water more, can slowly. Bone porcelain blank book water less as quickly. Bone China also has effect on the density of water operation of the billet. Bone China billet density suction slower, bone porcelain blank (absorbing water rapidly. Operating pen to consider what it needs of material and the water content, good is a complete. Levels with different special pen. Stagnant water the whole process, avoid by all means is more unfavorable fill back and forth, otherwise cause uneven marks, will damage the flowers to the artistic effect, often should use bone porcelain spoon stir water to prevent precipitation is expected to become weak. Design water speed wants even, points in flowers. Distinguish between light and shade levels up and closed in a timely manner to prevent the water transport of flowers. ( 3) Bone porcelain glaze layer thickness uniform, especially suite bone China products, ceramic glazing should adopt the same method achieved bone porcelain glaze layer thickness. ( 4) When burning, the supporting bone porcelain products in the same kiln, with a 1320 - its firing degrees 1350 ℃ is more appropriate. But by using low temperature such as bone porcelain body, bone porcelain glaze, can be burnt in 1300 ℃ or less and burst into flames with reducing flame commonly is more appropriate. ( 5) Under the bone porcelain glaze decal paper production, such as: gravure printing ( Copper plate) Color paper to seiko spy, connect the pigment and agent ( Caramel and bletilla powder, etc. ) Cooperate, fill fully mix with concave line layout, scrape all pages residual pigment such as stamping by manual or mechanical. Requires uniform pressure, neatly printed decorative pattern design, color depth, when used in the first biscuit firing bone porcelain blank ( The green) or bone China Need on the site with a clear water, press on paper, brush equably in color paper on a water again, make paper flowers close to the bone porcelain blank, then slowly off the bottom paper, slightly dry bone porcelain glazing to burn. Connection agent formula and method: caramel bletilla liquid crystal sugar 60% 12% 26% borneol ( Borneol) Method: 2% per 1 kg of bletilla 25 - powder and water 28 kilograms, for 12 hours, with the nylon bag squeezing slag filtration, boil the filtrate to precipitate a day and night, take the supernatant fluid continue to cook for, after cooling concentration with may be advisable. Caramel heating boiling after cooling, concentration with 40 - It is advisable to be 45. Preparation when first take bletilla liquid, liquid caramel, rock sugar into the aluminum heating pot to boil, stirring evenly mixed with alcohol molten borneol solution in advance again, about 30 - mixing continue to heat Concentration in 24 - after 50 minutes, cooling It is advisable to be 25 filtering. — Bone China household utensils to be continued. 。 。 。 。 。