Hot bending furnace for colored glazing glass, method for preparing colored glazing toughened hot-bent glass and colored glazing toughened hot-bent glass

Abstract

The invention discloses a hot bending furnace for colored glazing glass, a method for preparing hot-bent glass by using the hot bending furnace and the prepared colored glazing toughened hot-bent glass. The hot bending furnace comprises a furnace body (1), a push-pull base (2), an electric heating device (3) consisting of a fixed heating furnace wire (7) and a movable heating furnace wire (8), and an electrical appliance control device (4). In the process of performing hot bending treatment by using the hot bending furnace, the movable heating furnace wire (8) performs local auxiliary heating on the bending position of glass so as to ensure that the glass is completely attached to a mould at the bending position; the radius of a bending arc of the prepared colored glazing toughened hot-bent glass is less than or equal to 90mm, and the bending radian fully meets design requirements; multiple hot bending treatment such as single bending, continuous bending and the like can be realized; and the defects that the conventional hot-bent glass cannot be completely attached to the appropriate position of the mould, the prepared hot-bent glass has only one bending arc and the radius of the bending arc is more than 90mm are overcome.

Description

technical field [0001] The invention relates to a hot bending furnace, a method for manufacturing hot bending glass by using the hot bending furnace and its products, in particular to a colored glaze glass hot bending furnace, a method for manufacturing colored glaze tempered hot bending glass and the tempering heat produced by the same. Bent glass products. Background technique [0002] Hot-bending glass is to meet the high-quality requirements of modern buildings. It is made of high-quality glass that is bent and softened by heating, shaped in a mold, and then annealed to make curved glass. The style is beautiful and the lines are smooth. It breaks through the singleness of flat glass and is more flexible and diverse in use. Hot bending glass is mainly used for interior and exterior decoration of buildings, lighting roofs, sightseeing elevators, arched corridors, etc. Civil hot bending glass is mainly used as glass furniture, glass aquarium, glass washbasin, glass count...

AI Technical Summary

Problems solved by technology

[0008] 1) In terms of hot bending heating, now hot bending manufacturers generally adopt the overall heating method. This heating method can only produce shallow arcs with small angles. The corresponding radius of this shallow arc is >90mm. When bending glass products, there is a phenomenon that the fit of the mold is not in place, that is, the arc of the hot-bent glass is too shallow or over-bent. , the prepared hot-bending glass cannot be installed and cannot meet the design requirements

[0009] 2) During the hot bending process of glass, the temperature control point and processing time control curve usually used are: it takes about 30 minutes to rise from room temperature to 300°C; it takes about 25 minutes to rise from 300°C to 500°C; it takes about 25 minutes to rise from 520°C to 580 ℃ for about 20 minutes; holding time for about 10 to 20 minutes; cooling from 580 ℃ to 520 ℃ about 40 minutes; 520 ℃ to 300 ℃ about 30 minutes; 300 ℃ to room temperature about 50 minutes, now In the process of preparing hot-bent glass, the glass is easy to be thermally cracked, the product yield is low, and the production cost is high

[0010] 3) In terms of glazing technology, screen printing, roller printing, etc. are generally used now, and even spraying or hand-painting can be used to glaze. The printing accuracy is not high. If the existing technology is used to directly print and then heat-bend, the glass will be heated. It is very easy to break during the process, and the glaze has serious color difference due to uneven heating

[0011] 4) In terms of making hot bending molds, hot bending manufacturers generally use three forms: solid mold, hollow mold, and strip frame mold. However, due to the small batch size and various specifications of architectural hot bending glass, one order for one specification Glass needs to be welded with a set of molds, which will cause the accumulation of molds in the hot bending glass factory, and the waste of materials and labor is huge.

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