What are the hazards of edging in the tempering furnace? 

(1) During the heating and cooling process of the glass without edging or fine grinding, the defects of the edge of the glass are likely to cause “fried furnace” and wind explosion due to excessive stress or uneven stress, which will cause the tempering furnace. More damage.

(2) If the glass is not edged or roughened before entering the furnace, there will be tiny glass slag particles on the sides. When the equipment is driven and oscillated, these tiny slag particles will fall on the roller table. Especially when it falls onto the ceramic roller table in the furnace, the pressing of the glass will adhere to the ceramic roller table at high temperature. After the glass passes, it will produce more serious pitting, and it must be stopped after this happens. The furnace can be cooled by thoroughly cleaning the ceramic roller. Frequent shutdown and cooling will not only increase the operating costs of the equipment, but also adversely affect the service life of the equipment.

(3) When the glass without fine grinding is driven on the roller table, it will cause different degrees of damage to the surface of the roller table. In particular, the damage to the ceramic roller table will be permanent and irreparable. Similarly, for shaped glass, trenching, punching, etc., the processed part should be edged or chamfered after cold working to ensure that there is no edge or crack.