Processing technology for glass with super-large arc length

Abstract

The invention provides a processing technology for glass with a super-large arc length. The processing technology comprises the steps of heating and air-blowing molding. In the step of heating, plateglass performs reciprocating movement in a heating section under the transferring of a heating roller table group and is simultaneously heated by upper lower heating wires, wherein the heating temperature of the middle sections of the upper heating wires is higher than the heating temperature of the middle sections of the lower heating wires. In the step of air-blowing molding, the sizes of air openings of upper and lower air grids in a horizontal toughening furnace are adjusted so as to allow the opening size of the air opening of the upper air grid to be gradually increasing from two ends ofthe length direction of a horizontal air grid roller way to the center of the length direction and the opening size of the air opening of the lower air grid to be gradually increasing from center totwo ends; then the horizontal air grid roller way is adjusted to realize alignment with a heating roller way and an unloading roller way; then the horizontal air grid roller way, the upper air grid and the lower air grid are opened; and finally, the heated and softened glass is rapidly transferred into the horizontal air grid roller way, and is allowed to deform under the actions of the upper airgrid and the lower air grid and then to be corrected and molded. The processing technology provided by the invention can produce the glass with an ultra-large arc length of 4,000 to 5,000 mm and guarantees bending precision of the glass.

Description

technical field [0001] The invention relates to the technical field of glass processing, in particular to a processing technology of ultra-large arc length glass. Background technique [0002] Curved glass is widely used in contemporary applications and brings beautiful visual appearance, such as decorative walls, buildings, balconies, furniture, etc. Generally, the prepared flat glass is softened by heating, molded in a mold, and then annealed. With the rapid development of social industrialization, people's demand for glass continues to increase, and their requirements for glass quality continue to increase. Therefore, how to improve production efficiency while ensuring quality has become the direction of competition in the glass processing industry. [0003] At present, the glass bending process is loading-heating-bending-forming-correction-cooling-unloading, that is, the flat glass is first placed on the loading section and transported into the heating section by the lo...

AI Technical Summary

Problems solved by technology

When the glass arc length exceeds a certain limit and the temperature drops too much, the temperature gradient required for glass tempering cannot be established, and the tempering cannot be completed or the tempering quality of the glass will be affected.

Therefore, the ultra-large arc length glass cannot be formed or tempered due to the excessive temperature drop after heating; that is, the arc length of the curved tempered glass produced based on the current technology is not greater than 3600mm