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Glass Annealing Lehr
  • Glass Annealing Lehr
  • Glass Annealing Lehr
  • Glass Annealing Lehr
  • Glass Annealing Lehr
  • Glass Annealing Lehr

    • Glass Annealing Lehr

    Long oven used in the glass manufacturing process for uniform controlled cooling of glass ribbon from the tin bath

    In flat glass production, the annealing lehr is used to cool the glass ribbon as it exits the tin bath. This process removes residual internal stress and eliminates optical distortions, ensuring stability in the glass structure. By carefully controlling the temperature curve throughout the lehr, the glass cools gradually without introducing new stresses, which guarantees mechanical strength, thermal stability, and optical uniformity.

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    Our Glass Annealing Lehrs
    Float Glass Annealing Lehr with Roller Conveyor
  • Float Glass Annealing Lehr with Roller Conveyor
  • Float Glass Annealing Lehr with Roller Conveyor
    • Float Glass Annealing Lehr with Roller Conveyor

    Specifications

    • Power: 22-37kW
    • Working pressure: 0.6MPa
    • Transverse temperature tolerance: ≤30℃
    • Output temperature fluctuation: ≤±2℃
    • Production capacity: 1200t/d (max. raw sheet width 5.8m, min. sheet thickness 0.12mm)
    • Glass pull rate: 30-1200t
    • Glass thickness: 0.12-19mm
    • Glass width: 4-5.8m
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    Rolled Glass Annealing Lehr with Roller Conveyor
  • Rolled Glass Annealing Lehr with Roller Conveyor
  • Rolled Glass Annealing Lehr with Roller Conveyor
    • Rolled Glass Annealing Lehr with Roller Conveyor

    Specifications

    • Power: 15-18.5kW
    • Working pressure: 0.6MPa
    • Transverse temperature tolerance: ≤30℃
    • Output temperature fluctuation: ≤±2℃
    • Production capacity: 600t/d (max. raw sheet width 5.4m)
    • Glass pull rate: 160-600t
    • Glass thickness: 1.2-4mm
    • Glass width: 2.4-5.4m
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    Advantages
    • Sidewall temperature maintained within 30 °C above ambient conditions, enhancing safety and energy efficiency
    • Multi-stage roller drive minimizes roller diameter differences during the cooling process, lowering the risk of scratches on the glass ribbon
    • Gear grinding technology improves the accuracy of drive shafts and rollers, ensuring stable operation and consistent quality
    Rlated Hot End Equipment
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    Our Glass Equipment Covers

    To keep raw materials flowing evenly, the system uses two drive stations and three clutches that can be combined in different ways. This makes the feeding shovels move together in sync, so the material is delivered continuously without interruptions.

    The box is built with precise welding, so it doesn’t bend or lose shape, and then it’s heat-treated to make it even stronger. Inside, stronger stainless-steel plates are used, which can handle high temperatures without losing stability. This makes the box more reliable in daily use and lowers the risks that usually come with long-term operation.

    The lift-out roller table is built with a steel frame that has a circulating water system inside. This cooling setup prevents the frame from bending or losing shape when exposed to high heat. The bearings are also water-cooled, which reduces wear and extends their service life. Thanks to this design, the machine can keep running reliably even during long periods of continuous production at high temperatures.

    The stirring depth can be adjusted depending on production needs. As the blades move, they generate vortexes in the molten glass that collide and mix together. This motion helps mix the molten glass thoroughly, making sure it stays even in both composition and quality before it goes into the forming stage.