Glass tempering furnace and method for heating glass sheets

摘要

A method for heating glass sheets, wherein glass sheets (4) are entered into a tempering furnace (1) in which the glass sheet (4) is heated from above and below, where the sheet glass (4) is heated by blowing channel (5) arranged at an angle of 70-110 degrees to the direction of travel of the glass sheets (4) and through lines heating resistors (9 ) arranged at an angle of 70-110 degrees to the direction of travel of the glass sheets (4), where the line of heating resistors (9) has at least three controllable separate parts (10), lines of heating resistors (9) are arranged in the channels blown (5) for heating the air blown, channels blown (5) are compartmentalized according controllable separate parts (10), and temperature profile of the glass sheet (4) is set Direcció cross-n by adjusting separately the different parts (10) of the line of heating resistors (9).