Continuous flat tempering furnace, steel furnace Landglass map, Randy steel furnace

Steel furnace, continuous flat tempering furnace, steel furnace Landglass provided by Randy machines. We are Luoyang Randy Glass Machinery Co., Ltd. (www.landglass.com) in: Luoyang specializes in: steel furnace, glass tempering furnace, forced convection tempering furnace, convection oven, dual-chamber furnace glass deformation mainly from two aspects First issue is the precision roller, the second is the problem of uneven stress. 1.1 Roller presence flatness problems caused by bad tempered 1.1.1 heating roller deformation generally horizontal roller furnace steel roller is made of fused quartz or ceramic material, has good thermal shock resistance and thermal stability, but because of unevenness sometimes its internal structure, at the time of heating may cause thermal deformation particularly at high temperatures. Hot roller deformation caused by the bending roller inevitable, but also inevitably lead to deformation on the surface of the glass movement. 1.1.2 when the roller is worn roller after prolonged use and repeated cleaning, will inevitably lead to wear roller, especially in the clean-up rollers bonding more solid impurities, usually using grinding methods to clean up, long-term use and multiple roller mill clean-up will lead to loss of unevenness. On the one hand appear in the same rollers or appear eccentric uneven thickness between the roller and the roller on the other hand sometimes, but at the same time because they do not also replace the use of uneven thickness of the old roller or different degree of wear roller simultaneously also It will lead to uneven thickness roller. These results appear will result in uneven running surface of the roller, the glass in this uneven rollers eventually heated to the softening temperature, and conduct drive uneven rollers, softened glass there will be deformed, this deformation reservations glass After the glass to be reinforced, toughened glass will after deformation. 1.1.3 grilles roller deformation of the glass in the heating furnace was quickly transferred to the wind gate rollers, when the glass is still in a softened state, if the deformation roller grille inevitably affect the flatness of the glass, and the most likely to make the wind gate The main roller deformation there are two reasons: First, the drive roller bend, and second insulating material roller surface defects. 1.2.2 intermediate and edge deformation temperature difference caused by the glass when the glass is heated in a heating furnace, if the central temperature is higher than the edge of the final glass temperature, the glass in the cooling process, the heat shrinkage of the intermediate portion is greater than the contraction of the cold side portions, eventually the glass is cooled to room temperature and the temperature difference disappears, the edge will be greater than the size of the glass intermediate size, at the edge of the glass of the large compressive stress is formed as a balance this uneven stress, showing saddle-shaped glass. Similarly, a piece of glass is heated in a heating furnace, if the final extension of the temperature distribution in the plane is higher than the central edge portion, the glass in the cooling process, the hotter the glass edge portion is greater than the shrinkage of the middle of the shrinkage of the cooler, the final glass is cooled to room temperature and the temperature difference disappears, intermediate size will be larger than the edge of the glass size, at the edge of the glass to form a larger tensile stress state, to balance this uneven stress in the glass pot-shaped state final presentation, and this states is bidirectional, that is, the middle of the convex glass will change both directions