Preparation process for solving problem of polishing yellow edges of grey glazed bricks

Abstract

The invention relates to a preparation process for solving the problem of polishing yellow edges of grey glazed bricks. The method comprises the following steps: (1) powder is prepared: the ball discharge slurry moisture is 34-36%, the fineness 325-mesh screen residue is 1.5-2.0%, the flow rate is 50-80S, the pressed powder moisture is 6.0-6.5%, and the volume weight of the powder is 0.95-1.0; (2)the powder is aged for 24 hours, pressed, molded and dried at the temperature of 210 DEG C for 2 hours, and is discharged from a kiln at the temperature of 70-90 DEG C; (3) grinding and polishing ofthe green body are carried out; (4) ground coat is sprayed on the surface of the green body; (5) ink-jet decoration is carried out: ink sorts: blue, brown, brown, bright red, orange, golden yellow, black, black and gray; (6) transparent glaze is sprayed on the surface of a brick body; (7) firing in a roller kiln at the temperature of 1168-1185 DEG C for 75-82 minutes is carried out; and (8) polishing is carried out, wherein polishing parameters comprise 20 groups of rough polishing grinding heads, 16 groups of medium polishing grinding heads and 20 groups of fine polishing grinding heads.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a preparation process for solving the problem of polishing yellow edges of gray polished glazed tiles. Background technique [0002] Since inkjet printing led the upsurge of technological innovation in the building ceramics industry in 2010, the full-glazed products that were born following it also became a hit and became a star product at that time. Although new products in the building ceramics industry are introduced every year, various technologies and various equipment are constantly updated and iterated. After years of equipment improvement and technological innovation, ceramic tile products have achieved rapid improvements in color design, decoration methods, body simulation, etc. , but because of the integration of the advantages of the two types of antique bricks and polished tiles, the polished glazed tiles are not only rich in color and changeable, but also the transparent glaz...

AI Technical Summary

Problems solved by technology

However, behind this prosperity lies a regret that colleagues in the building ceramics industry have been unable to look directly at, that is, when producing gray ink-jet printed glazed tiles, after polishing, the product will always have a slightly or heavily polished yellow edge. Defects, especially in medium gray and dark gray products, greatly reduce the beauty of the product, and even degrade the product