At present, there are primarily three convection technologies used in the glass tempering furnace: pipe convection, chamber convection, and OptiFlow convection. As a basic technology, pipe convection is the transitional technology between radiation furnace and convection furnace. Chamber convection is an upgraded technology based on pipe convection. OptiFlow convection is a further upgrade from the chamber convection, effectively improving the heat exchange efficiency and heating uniformity in the furnace for a better result when tempering double-silver and triple-silver Low-E glass. In addition, for true convection heating, the heating elements should be located in the positions where the convection system blows air, not the positions where the air returns.
1）The proportion and efficiency of convection heating.
3）Whether the temperature control is accurate.