The sintering of the glass glaze is also called roasting, and is generally carried out in a baking furnace. The key to sintering the glass glaze is to control the sintering temperature. The glaze ink is prepared by using an oil solvent and an alkyd resin. The firing in the furnace is about to go through the following stages:
The first stage: from room temperature to 120 ° C, preheating, no change in ink;
The second stage: from 120 ° to 250 ° C, light oil evaporation and gasification;
The third stage: from 250 ° ~ 500 ° C, heavy oil and resin combustion gasification;
The fourth stage: from 500 ° ~ 580 ° C, the glass powder in the color glaze begins to melt, while the surface of the substrate glass is also slightly softened;
The fifth stage: from 580 ° to 620 ° C, the glass glaze powder is finished and melted, and the pigment powder is also melted into it. At this time, the surface of the glass body is completely softened, and the color glaze is combined with the glass to complete the transfer and sintering of the glaze color. And then slowly dropped to room temperature.
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