Why do glass tempering furnaces need to be shut down and cleaned regularly?

Considering the time and power consumption of the heating process of the furnace, as well as the lifespan of the ceramic roller conveyor, glass tempering furnaces in general tempering plants work 24 hours a day, and even if they are not in production, they will remain in insulation standby mode. However, in the actual production process, it is inevitable to encounter the situation of glass exploding in the furnace. The hesitation temperature is high, and these debris may stick to the ceramic roller in a melted state, which poses a risk of glass scratches during the movement of the glass in the furnace, which is commonly known as glass white track. Moreover, glass shards falling into the underground trough can indirectly affect the temperature control of the furnace body, causing uneven heating of the glass and various defects that affect optical quality. Therefore, regular shutdown and cleaning of the furnace are routine maintenance items for the tempering furnace, and the specific frequency needs to be determined based on the actual furnace condition.

1. Method for shutting down a glass tempering furnace

1.1. Inspection before shutting down the tempering furnace:

Stop the tempering furnace only when there is no glass inside the furnace body and air grille.

1.2. Method and steps for shutting down a tempering furnace:

Turn off the electric heating of the tempering furnace, open the top of the furnace for rapid cooling, and allow the tempering furnace to naturally cool down. At this time, do not open the tempering furnace door and keep the rollers running at a slow speed. When the furnace temperature drops below 300 degrees, open the furnace door and gradually separate the furnace body with a gap of 10-20MM each time to cool it down.

2. Cleaning method for glass tempering furnace

The roller conveyor of the film entry platform should be cleaned daily, otherwise dust can easily be carried into the tempered glass furnace and contaminate the ceramic roller conveyor inside the tempered glass furnace.

The ceramic roller conveyor inside the tempering furnace is regularly cleaned to ensure the quality of tempered glass.

Precautions for cleaning the tempering furnace:

The roller conveyor can be cleaned with water, and the use of any soap or cleaning agent is prohibited.

Avoid hitting the tempered glass furnace rollers with hard objects, and it is strictly prohibited to clean the tempered glass furnace rollers above 50 degrees