The countermeasure against the deformation of the heating roller has sufficient time for the roller to preheat before the glass tempering, so that the roller is heated to average, the stress is eliminated, and the stress deformation of the roller is reduced. For roller wear, the entire roller should be ground when cleaning the roller. Try to avoid grinding the roller, and wear the roller evenly to maintain the consistency of the roller. And often check the height of the adjustment roller, so that the upper surface of the roller is a flat surface during operation to keep the surface of the glass flat. The structure of the wind turbine roller is surrounded by entangled nylon rope as the heat insulating material on the surface of the metal roller. The glass is broken in the wind fence and the nylon rope is cut off easily, which causes the surface of the roller to be uneven. It is necessary to inspect and replace the nylon rope in time. Control measures against thermal deformation due to uneven heating temperature (1) There is a temperature difference between the upper and lower surfaces, and when the glass is bent upward, the upper surface temperature of the glass is high. The upper surface temperature should be lowered, and the temperature of the lower surface should be properly maintained to keep the heating temperature of the glass as a whole. When the glass is bent downward, the lower surface temperature is higher than the upper surface temperature, and the lower surface temperature should be appropriately lowered, and the temperature is improved. Upper surface temperature. If the tempering yield and the tempering quality are affected when the temperature is adjusted, the heating time or the heating time is appropriately extended.
(2) For the glass deformation caused by the temperature difference between the middle and the side, if the glass shows a saddle shape, the furnace body insulation is not good or the temperature setting value is low, and the temperature setting value of the edge needs to be adjusted; When the shape of the bottom of the pot is presented, if it is due to the history of heat, it is necessary to temporarily store the glass. First, the furnace is operated to make the temperature distribution in the furnace average and then on the sheet; if the temperature is set, the temperature setting parameter needs to be adjusted. The furnace temperature distribution is averaged.
(3) For random temperature unevenness, it is necessary to check the equipment in time to avoid the bad condition of the equipment. The glass slag around the temperature sensor is often cleaned, so that the temperature of the temperature sensor is the correct temperature, and the film is avoided. Multiple furnaces are placed in a uniform state.
Control measures against thermal deformation due to uneven cooling For the uneven stress generated during cooling, the cooling rate of the glass surface can be adjusted by adjusting the wind pressure of the wind grating. If the glass is bent downward, it can be adjusted by increasing the cooling pressure of the lower surface of the glass by increasing the wind pressure at the bottom of the windshield; if the glass is bent upward, it needs to be adjusted by increasing the cooling pressure of the upper surface of the glass by increasing the wind pressure at the upper part of the wind grating. .
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