In the production process of the glass tempering furnace, the tempering parameters of the ordinary original glass are generally set by the engineers of the glass tempering furnace manufacturer. When the shaped glass needs to be tempered, the tempering parameters of the glass must be set according to the following principles:
1. Glass with holes and grooves: When tempering, the heating time of the glass of the same specification is increased by 2.5% to 5%.
2, glass with sharp corners: glass less than 30 ° angle of heating in the tempering furnace is 2.5% to 5% less than ordinary glass, the tip is behind, and placed waste glass to prevent the corners from sucking too fast Causes bending.
3. Embossed glass: When the glass is placed, it is generally not facing upwards. In order to avoid the corrugation caused by too long heating time, the plane is sometimes placed downwards. The heating time is determined according to the thicker glass, and the blowing pressure is also the same.
4, endothermic glass: heating time is generally reduced by 5% than ordinary glass;
5, coated glass, heat-reflecting glass: to protect the film surface, the coating surface should face up, the bottom temperature and heating time is 2.5% to 10% higher than ordinary glass of the same thickness, and can not use S02 gas.
6, glazed glass: first in the glass tempering furnace must be dried before tempering, the upper and lower temperatures are generally set to 680 ° C ~ 740 ° C, the glass may appear curved, adjust the wind pressure to solve. The heating equilibrium pressure can be reduced by about 50%. The S02 gas cannot be used, and the heating time has a certain relationship with the glaze color.
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