Tempered glass is widely used with the needs of life, and the quality requirements for it are getting higher and higher, I believe you also know that the Guinness fifth anniversary Ruben is the most unsuccessful player is also in China to challenge to break 17 pieces of tempered glass, many netizens have debated about its challenge failure, is the quality of China's tempered glass too good? Or is there a problem with the way it is fixed? Regardless of the result, the quality of tempered glass is very important, because the glass must be heated to the corresponding temperature, the temperature of each part of the glass surface should be uniform, and the difference should not be too large, so to control this data must master three elements.
1. Choose a reasonable heating time. The heating power of the tempering furnace is certain, and the heating time is usually set to about 35~40 seconds per millimeter of thickness glass, for example: the heating time of 6mm thickness glass is about: 6×38 seconds = 228 seconds, this calculation method is suitable for ordinary flat tempered glass with a thickness of less than 12mm, when the thickness of the glass is 12~19mm, the basic calculation method of heating time is about 40~45 seconds per 1mm thickness glass.
2. In order to achieve uniform heating, the arrangement of glass on the tabletop is also very important. The reasonable arrangement of the sheet is mainly to ensure the uniformity of the longitudinal and transverse loads in the electric furnace, that is to say, the arrangement of the sheet of each furnace glass and the gap time of each furnace should be uniform.
3. According to the load of the electric furnace, choose a reasonable heating temperature and effectively control the temperature in the furnace. The heating of glass in the tempering furnace mainly includes conduction, radiation and convection. The electric furnace load here does not refer to the area occupied by the glass in the electric furnace, but refers to the relationship between the thickness of the glass, the heating temperature and the heating time.