[China Glass Net] First, the glass must be edging before tempering
The quality of glass edging plays a decisive role in the yield of tempered glass. The effect of edging is more beautiful and is not easily broken during tempering, improving the yield of tempered glass.
Second, adjust the process parameters of tempering
The tempering process parameters are heating temperature, heating time, tempering cooling wind pressure time and tempering cooling time. The higher the tempering heating temperature, the shorter the heating time. A reasonable heating time needs to be selected after the temperature is determined. In general, the heating time per millimeter is about 40 seconds. However, it is necessary to increase the heating time by 10% when tempering the glass of the large layout, and increase the heating time by 10% when tempering the perforated and angled glass. A flexible grasp of heating time and heating temperature is also the key to improving the yield of tempered glass.
Third, the importance of uniform glass heating
The glass is actually a cube, and the heating of the upper and lower sides is relatively slow. When the large-format glass is tempered, the middle of the glass is often heated very slowly. If the glass of the large layout is heated evenly, the temperature of the furnace is set to a temperature in the middle of a heating curve higher than the set temperature by 10 degrees, and the temperature of the side is lower than the set temperature by 10 degrees. The tempered glass thus has a uniform degree of uniformity and uniformity.
Fourth, the hole, the angle of the glass
Note on tempered glass punching:
1. The aperture should be greater than or equal to the thickness of the glass.
2. The distance between the edge of the hole and the edge of the glass is greater than or equal to twice the thickness of the glass.
3. The distance between the two holes, the distance between the edge of the hole and the edge of the hole is greater than or equal to twice the thickness of the glass. If you can't reach this requirement and you have to punch holes, you can solve it by slotting.
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