LandGlass: Best Practices for Safely Heating a Glass Tempering Furnace

by GlassBalkan
0 comment 2 minutes read

Glass tempering furnaces play a crucial role in the production of high-quality tempered glass. To ensure the longevity of the furnace structure and maintain optimal production efficiency, it is essential to follow specific guidelines during the heating process.

LandGlass, a leading provider of glass tempering solutions, offers valuable insights into the best practices for heating a glass tempering furnace safely and effectively.

1. **Gradual Heating Rate**: When heating up the glass tempering machine for the first time, it is recommended to follow a gradual heating rate of 30 to 50 degrees Celsius per hour. This gradual approach helps prevent damage to the furnace structure and ensures a stable heating process.

2. **Temperature Maintenance**: To address the possibility of residual moisture inside the furnace, it is crucial to maintain the temperature at key intervals during the heating process. Specifically, temperatures of 200 degrees, 300 to 350 degrees, 400 to 450 degrees, and 550 degrees Celsius should be maintained for 2 to 4 hours each. The cumulative insulation time should reach 8 to 12 hours to prevent deformation of the furnace structure due to rapid heating.

3. **Optimal Heat Dissipation**: During the initial heating phase, when the furnace temperature is below 400 degrees Celsius, it is advisable to lift the top half of the furnace body by 30 to 100 millimeters. Additionally, ensure that the heat dissipation valves of the furnace and the front and rear doors of the tempering furnace are in the open position. This step effectively expels moisture from within the furnace and promotes a safe heating process.

4. **Convection Glass Tempering Furnaces**: For convection glass tempering machines, maintaining the continuous operation of the cooling water pump and the convection blower is essential. This ensures an even distribution of temperature inside the furnace and helps avoid the concentration of thermal stress, particularly during the heating process.

5. **Temperature Stabilization**: Once the tempering furnace reaches the predetermined working temperature, it is recommended to maintain this temperature for at least 1 hour before commencing production. This step stabilizes the internal environment of the furnace and ensures optimal conditions for glass tempering.

By adhering to these recommendations, glass manufacturers can ensure that their glass tempering machines heat up safely and stably. Implementing these best practices not only enhances production efficiency but also contributes to improved product quality. LandGlass emphasizes the importance of following these guidelines to maximize the performance and longevity of glass tempering furnaces, ultimately leading to superior tempered glass products.



Source: LandGlass with additional information added by GlassBalkan

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