| 摘要 |
PURPOSE: Provided is a manufacturing method of yellowish crystal-glazed korean style roofing tiles having low absorbency and high bending fracture strength, which improves durability and gives a fine appearance. CONSTITUTION: The method comprises the steps of: preparing a tiling clay by mixing raw materials in a ratio of 50% of kaolin, 20% of chamotte, 20% of clay and 10% of silica sand, and purifying(100); vacuum extruding(110); molding(120) and drying(130); primary sintering(140) at 900deg.C, especially very slowly heating to 500deg.C; coating a part which don't have to be glazed, with paraffin(150); coating it with glaze(160); secondary sintering(170) it at 1300deg.C.
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