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Glass deformed mainly from two aspects, the first issue is the precision roller, the second is the problem of uneven stress. 1.2 due to the heating caused by the thermal deformation temperature unevenness exists 1.2.1 glass surface temperature difference during the heating up and down, when the glass is delivered to the heated rollers, the lower surface of the glass in contact with the roller, the heating roller directly conducting manner glass by heat exchange, on the surface of the glass on the surface of the glass is heated by way of heat radiation, the heat transfer rate is higher than the upper surface of the lower surface of the heat transfer rate, when the thermal equilibrium is not taken when the auxiliary heating, the surface temperature of the glass lower than the temperature of the lower surface, and at the start of heating the glass is a typical elastomer, the thermal expansion coefficient and relatively high glass (linear expansion coefficient of the glass was 9 × 10 / .C), since the surface temperature is higher than the temperature of the upper surface , the expansion rate is higher than the upper surface of the lower surface of the glass that is bent upward from the glass surrounding Alice roller to form an intermediate glass is heated, and is only the middle roller support, when the glass is further heated in contact with the roller position First to reach the softening temperature and subjected to the full weight of the glass, the middle of the glass will occur "floating" deformed, resulting in thinning of the site and asked the roller prints and even optical distortion. On the other hand when all the glass is heated to the softening temperature of the glass flattened, but the temperature difference did not disappear with the temperature difference between the glass is uniformly cooled to room temperature, the contraction is greater than the cold surface of the glass heat shrinkage to form the heat curved surface. 2.2 Measures for controlling thermal deformation temperature unevenness due to heating caused by (1) the temperature difference for the upper and lower surfaces, when the glass is bent upward, indicating that the glass surface temperature. Surface temperature should be reduced, while maintaining the overall glass heating temperature constant, an appropriate increase in surface temperature; when the glass is bent downward, indicating that the surface temperature is higher than the surface temperature, the surface temperature should be lower due to lower, while increasing the surface temperature. If at the time of adjusting the temperature, tempered steel yield and quality are affected, respectively, an appropriate extension of the heating time or reduce the heating time. (2) For the deformation temperature difference caused by the presence of glass in the middle and edge, if the glass showing saddle-shaped, indicating poor insulation or furnace temperature setpoint lower edge, you need to adjust the temperature set point edge; when When the glass bottom of the pot shape rendering, if due to historical reasons, can temporarily laying glass, the first air furnace operation, the furnace temperature is evenly distributed and then poorly; if the temperature setting issue, the need to adjust the temperature setting parameters, so furnace temperature distribution. (3) for the random uneven temperature, you need timely maintenance equipment, to avoid adverse device status, often to clean up broken glass near the temperature sensor, the temperature sensor is accurate to feel the temperature of the furnace, while the topsheet is to avoid more furnace in the same state stacked. Glass Tempering Furnace | Landglass glass tempering furnaces | Tempering Furnace suppliers provided by Randy machines. Glass Tempering Furnace | Landglass glass tempering furnace | Randy Glass Tempering Furnace Luoyang Randy Glass Machinery Co., Ltd. (www.landglass.com) 2014 has been newly upgraded launched