Conveying method of heating furnace in continuous glass toughening furnace

Abstract

The invention provides a conveying method of a heating furnace of a continuous glass toughening furnace, and belongs to the field of glass toughening. According to the method, a heating furnace conveying line is divided into a normal-speed section, an acceleration section and a rapid section, wherein in the normal-speed section, the glass is driven to be conveyed at a constant speed at the speed of V flat; in the rapid section the glass is driven to be conveyed at a constant speed at the speed of V<rapid>, V<rapid> being larger than V<normal>; and in acceleration section, variable-speed conveying of the glass is controlled, and the glass is limited at the temperature required by heating to tempering in the rapid section. According to the invention, the accelerating section on the conveyingline of the existing heating furnace is advanced, and meanwhile, the quick section is added behind the accelerating section, so that the glass is limited at the temperature required by the quick section to be heated to be tempered, i.e., the glass is completely heated in the quick moving process and moves in a quick passing manner before being heated to a softening point; as a result, the deformation amplitude of the glass is effectively reduced, so that the defect that raised grains are likely to appear on the surface of the glass is overcome, the effect is more obvious especially for ultrathin glass with the glass thickness smaller than or equal to 2.5 mm, and the flatness of the glass can reach 0.2 mm or below.

Description

technical field [0001] The invention belongs to the field of glass tempering, and relates to a continuous glass tempering furnace, in particular to a conveying method for the heating furnace. Background technique [0002] The glass tempering furnace uses physical methods to form a compressive stress layer on the glass surface and a tensile stress layer inside; when the glass is subjected to external force, the compressive stress layer can offset part of the tensile stress to avoid glass breakage, thereby achieving the goal of improving glass strength. Purpose. Glass tempering furnaces are mainly divided into reciprocating tempering furnaces and continuous tempering furnaces. Reciprocating tempering furnaces occupy a small area, but have low production efficiency and low capacity, and are only suitable for small-scale glass production; continuous tempering furnaces are relatively , high production efficiency, low energy consumption, and can guarantee higher performance requi...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems existing in the prior art, the present invention is committed to providing a new solution to overcome the "wavy" phenomenon of glass, and specifically provides a method for conveying the heating furnace in a continuous glass tempering furnace to improve the quality of the glass Defects that are easily deformed on the surface, especially for ultra-thin glass, while achieving flat glass, it can also expand its glass production capacity, which is more practical

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