Bending flat glass sheets by gravitational force, comprises arranging and fixing fastening devices on the glass sheet, guiding and tensioning the fastening devices on a support frame via connecting elements, and heating the support frame

摘要

#CMT# #/CMT# The method comprises arranging and fixing fastening devices (2) spaced apart at their boundary edges on a flat glass sheet (1), guiding and tensioning the fastening devices on a support frame (4) via connecting elements (3), heating the support frame with the flat glass sheet, that is held via the fastening devices and connecting elements, in an oven at a first temperature of 500-580[deg] C, which is below the deformation temperature, and heating discrete regions of the flat glass sheet, independently and/or in a group, using a radiant burner arrangement at a second temperature of 560-650[deg] C. #CMT# : #/CMT# The method comprises arranging and fixing fastening devices (2) spaced apart at their boundary edges on a flat glass sheet (1), guiding and tensioning the fastening devices on a support frame (4) via connecting elements (3), heating the support frame with the flat glass sheet, that is held via the fastening devices and connecting elements, in an oven at a first temperature of 500-580[deg] C, which is below the deformation temperature, heating discrete regions of the flat glass sheet, independently and/or in a group, using a radiant burner arrangement at a second temperature of 560-650[deg] C that is above the first temperature, and cooling the flat glass sheet, abruptly or slowly, after reaching the desired deformation. The flat glass sheet is horizontally arranged in an angle of 0-90[deg] , and is tangentially biased on the fastening devices, the connecting elements and the support frame. An independent claim is included for an assembly for bending flat glass sheets by gravitational force. #CMT#USE : #/CMT# The method is useful for bending flat glass sheets by gravitational force. #CMT#ADVANTAGE : #/CMT# The method is capable of simply and rapidly bending the flat glass sheets with high reliability. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a schematic view of an assembly for bending flat glass sheets. 1 : Flat glass sheet 2 : Fastening devices 3 : Connecting elements 4 : Support frame 7 : Clamping device.