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Method for preparing bent glass

A bending and glass technology, which is applied in the field of preparing curved glass, can solve the problems of uneven heat transfer of glass, huge processing costs, and uneven infrared transmission, so as to increase the infrared transmittance, easy to control the size, and high dimensional accuracy Effect

Inactive Publication Date: 2014-03-19
刘克宜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing cost of the mold used in this bending method is huge, the adjustment time of the mold is long, and the mold needs to be remade after the size adjustment
In addition, because most of the existing molds are metal products, the expansion coefficients of metal and glass are different, and the inconsistent expansion and contraction of the glass and the mold during heating and annealing can easily lead to glass breakage and deformation.
In addition, during the annealing process of the glass, due to the uneven distribution of impurities inside the glass, the shrinkage of the glass is inconsistent, and the bent glass will be slightly deformed.
The deformation of the glass processed by the concave-convex mold will be slightly better, but there will be traces of the mold. Although the semi-softened self-weight bent glass has a little less mold traces, the deformation is larger than that of the glass processed by the concave-convex mold.
Since the shape of the flat glass has been fixed, when the glass is bent and deformed, the dimensional accuracy of the bent glass product will also have errors, making it difficult to control the bending height of the glass
Bending glass with deformation or mold traces will easily cause the glass to age due to uneven heat transfer when baking food, and form white spots. The white spots will make infrared light transmit unevenly, and as a result, the baked food will lose its taste

Method used

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  • Method for preparing bent glass
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  • Method for preparing bent glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing circular curved glass, comprising the steps of:

[0025] (1) Select a quartz glass tube or a high borosilicate glass tube with the same radius and corresponding length according to the radius and length of the circular curved glass;

[0026] (2) Cut the glass tube transversely according to the length of the curved glass;

[0027] (3) Cut the glass tube longitudinally by cutting the cutting surface as a vertical surface, such as figure 1 As shown, W in the figure is the width of the curved glass, H is the height of the curved glass, and the height of the curved glass cut by this cutting method is the highest;

[0028] (4) Grinding, chamfering and burning all cutting surfaces;

[0029] (5) Polishing the bent glass after the above processing.

Embodiment 2

[0031] A method for preparing circular curved glass, comprising the steps of:

[0032] (1) Select a quartz glass tube or a high borosilicate glass tube with the same radius and corresponding length according to the radius and length of the circular curved glass;

[0033] (2) Cut the glass tube transversely according to the length of the curved glass;

[0034] (3) Cut the glass tube longitudinally with the cutting surface as the horizontal plane, such as figure 2 As shown, W in the figure is the width of the curved glass, H is the height of the curved glass, and the height of the curved glass cut by this cutting method is the lowest;

[0035] (4) Grinding, chamfering and burning all cutting surfaces;

[0036] (5) Polishing the bent glass after the above processing.

Embodiment 3

[0038] A method for preparing circular curved glass, comprising the steps of:

[0039] (1) Select a quartz glass tube or a high borosilicate glass tube with the same radius and corresponding length according to the radius and length of the circular curved glass;

[0040] (2) Cut the glass tube transversely according to the length of the curved glass;

[0041] (3) Cut the glass tube longitudinally by cutting the cutting surface along the inclined plane in the radial direction, such as figure 2 As shown, W in the figure is the width of the curved glass and H is the height of the curved glass. The height of the curved glass cut by this cutting method is between embodiment 1 and embodiment 2;

[0042] (4) Grinding, chamfering and burning all cutting surfaces;

[0043] (5) Polishing the bent glass after the above processing.

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PUM

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Abstract

The invention discloses a method for preparing bent glass. According to the bending radian and length of bent glass, a quartz glass tube or a perborosilicate glass tube with a corresponding bending radian and a corresponding length is selected; according to the length, width and height of the bent glass, the glass tube is subject to transversal cutting and longitudinal cutting; the cut surfaces are subject to burnishing, chamfering and edge-burning; and finally the processed bent glass is polished. With the method provided by the invention, the bent glass is advantaged in high dimensional precision and high infrared transmittance.

Description

technical field [0001] The invention relates to a method for preparing curved glass, in particular to a method for preparing high-temperature-resistant curved glass used in ovens and barbecue utensils. The method does not require heating during the preparation process. Background technique [0002] All kinds of ovens and barbecue utensils need to use high temperature resistant glass, in order to make the air flow more smoothly when the fuel is burning, and to observe the burning state of the flame and let the infrared rays of the flame fully bake the food, and prevent oil and impurities Drip into the fire outlet, and the guards used to protect the fire outlet on ovens and barbecue appliances are currently using high temperature resistant curved glass. [0003] At present, glass processing factories generally use flat glass to cut the high temperature resistant curved glass, then grind the edge, put it into the mold after chamfering, and bend it with a concave-convex mold aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B33/06C03B29/00B24B29/00
Inventor 刘克宜
Owner 刘克宜