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Wear-resistant brick surface of a large number of pinhole defects should be how to solve?

2017-11-28 11:02:13

Common wear-resistant brick products, the water absorption rate of 6 to 8%
Surface attached to a thin layer of high gloss transparent glaze. The reason for its pinhole is the surface of the transparent glaze melting, the body is still exhaust, so the treatment of pinholes glazed brick products can be solved by the way, basically from the following aspects:
(1) adjust the transparent glaze formula to increase its initial melting point;
(2) adjust the body formula to reduce the loss of material in the billet, especially pyrolysis of lost matter;
(3) appropriate to relax the powder sieve residue requirements, which will help the green body decomposition and exhaust;
(4) to extend the temperature range of the furnace 700 ~ 900 ℃; to increase the combustion air pressure of the unburned surface gun forced cooling.