Operation method and precautions of flat glass tempering furnace

Flat glass tempering furnace is a device used for heat treatment of flat glass. By controlling the heating and cooling process, compressive stress is formed on the surface of the glass, improving its strength and impact resistance. The correct operating method is crucial for the quality and safety of tempered glass. We will briefly introduce the operation method and precautions of the flat glass tempering furnace here.

1、 Operation method of flat glass tempering furnace

1. Preparation work and loading operation methods

Before operating the glass tempering furnace, the following preparatory work needs to be done: clean the furnace chamber to ensure that there are no impurities and residues inside the furnace chamber, so as not to affect the uniformity of glass heating and cooling; Check the equipment, including heating elements, fans, temperature sensors, etc., to ensure that they are operating properly and in good condition.

Loading: Gently place the flat glass to be processed in the furnace chamber, ensuring appropriate gaps between the glass to avoid collision and stacking. Be careful to avoid direct contact between glass edges and metal to prevent thermal stress.

2. Set parameters

Set appropriate parameters based on the size, thickness, and process requirements of the glass: heating temperature. Set an appropriate heating temperature based on the type and thickness of the glass, usually between 600 ° C and 700 ° C; The insulation time depends on the thickness of the glass and the process requirements, with typical values ranging from a few minutes to over ten minutes; Cooling speed, set an appropriate cooling speed, usually slower, to avoid sudden temperature changes causing glass breakage.

3. Operation methods for heating and insulation stages

Start the heating system and gradually increase the temperature to the set heating temperature. The heating process should be carried out gradually to avoid rapid temperature rise and prevent glass breakage. The heating process can be monitored based on the temperature curve.

After reaching the set heating temperature, maintain insulation for a period of time. The length of insulation time depends on the thickness of the glass and the process requirements, and this step is the key to forming compressive stress on the glass surface.

4. Cooling stage and unloading operation method

After the insulation is completed, gradually reduce the temperature and proceed with cooling. The cooling rate usually needs to be slower to avoid sudden cooling causing glass breakage. The control of the cooling process is equally important and can be achieved by controlling the cooling rate.

After cooling the glass to a safe temperature, carefully remove the tempered glass to avoid collision and damage. Specialized tools can be used while paying attention to the safety of operators.

2、 Precautions for operating a flat glass tempering furnace

1. Avoid cold and hot shocks: The temperature difference inside and outside the tempering furnace is large, avoiding sharp temperature changes, especially avoiding sudden exposure of the glass inside the furnace to cold air.

2. Reasonable discharge of hot gas: When the temperature inside the tempering furnace rises, a large amount of hot gas is discharged, and good ventilation is maintained to avoid the accumulation of hot gas causing danger.

3. Avoid collision: Be careful during the loading and unloading process to avoid collisions between glass or between glass and equipment.

4. Personnel operation: The operation of the tempering furnace requires experienced personnel to avoid non personnel operations, in order to avoid safety risks.

5. Take good safety precautions: Operators should wear personal protective equipment, such as protective goggles, heat-resistant gloves, etc., to avoid accidental injuries. Set clear warning signs near the tempering furnace to remind personnel to pay attention to safety.

The correct operation method of the flat glass tempering furnace has a significant impact on the quality of glass tempering. Operators should strictly follow the operating procedures and precautions to ensure the stable operation of the tempering furnace and produce excellent tempered glass products. If you want to learn more about equipment information or have customized needs for tempering furnaces, please leave a message or contact us