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Curved glass and molding method thereof

A technology of curved glass and molding method, applied in glass molding, glass remolding, glass production and other directions, can solve the problems of low yield of curved glass molding, optimize appearance quality, reduce residual stress, and avoid pitting. Effect

Active Publication Date: 2019-01-15
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a curved glass and its forming method in order to overcome the problem of low molding yield of curved glass in the prior art

Method used

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  • Curved glass and molding method thereof
  • Curved glass and molding method thereof
  • Curved glass and molding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Used to illustrate the beneficial effects of the curved glass of the present invention and its forming method

[0031] Take the glass substrate (Corning Gorilla Glass IV, length, width, and thickness: 155*75*0.5mm) and put it into the primary forming mold (the width direction of the glass substrate corresponds to the axial direction of the mold, the same below), and the primary forming mold Put it in the molding furnace, respectively go through four stages of preheating, three stages of molding and two stages of cooling to form a curved glass body. The height of the vertical projection of the curved glass body is h 1 (29.8mm), wherein the process conditions of four-stage preheating, three-stage profiling and two-stage cooling are shown in Table 1, and the residence time of each stage is 60s.

[0032] Take the above-mentioned curved glass blank and put it into the secondary molding mold, put the secondary molding mold in the forming furnace, respectively go through four ...

Embodiment 2

[0037] Used to illustrate the beneficial effects of the curved glass of the present invention and its forming method

[0038] Take the glass substrate (Corning Gorilla Glass IV, length, width, and thickness: 155*75*0.5mm) and put it into the primary forming mold, put the primary forming mold in the forming furnace, and go through four stages of preheating and three stages of pressing respectively. Type and two-stage cooling to form a curved glass body, the height of the vertical projection of the curved glass body is h1 (21.3mm), wherein the process conditions of four-stage preheating, three-stage pressing and two-stage cooling are shown in Table 2, The duration of each segment is 60s.

[0039] Take the above-mentioned curved glass blank and put it into the secondary molding mold, put the secondary molding mold in the forming furnace, respectively go through four stages of preheating, three stages of molding and two stages of cooling to form a curved glass blank. The height o...

Embodiment 3

[0043] Used to illustrate the beneficial effects of the curved glass of the present invention and its forming method

[0044] Take the glass substrate (Corning Gorilla Glass IV, length, width, and thickness: 155*75*0.5mm) and put it into the primary forming mold, put the primary forming mold in the forming furnace, and go through four stages of preheating and three stages of pressing respectively. Forming and two-stage cooling to form a curved glass blank. The height of the vertical projection of the curved glass blank is h1 (13.7mm). The process conditions of four-stage preheating, three-stage pressing and two-stage cooling are shown in Table 3. The duration of each segment is 60s.

[0045] Take the above-mentioned curved glass blank and put it into the secondary molding mold, put the secondary molding mold in the forming furnace, respectively go through four stages of preheating, three stages of molding and two stages of cooling to form a curved glass blank. The height of t...

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Abstract

The invention discloses a curved glass and a molding method thereof. The method includes: (1) taking a glass substrate with a thickness of h0 for one-shot forming to obtain a curved glass green body with a vertical projection height of h1; (2) subjecting the curved glass green body to secondary forming to obtain curved glass with a vertical projection height of h2, wherein in horizontal projection, the length perpendicular to the axial direction is 2L, and h2 / L is greater than or equal to 1 / 6 and less than or equal to 1, (h1-h0):(h2-h0)=(0.6-0.9):1. The method is beneficial to reducing the residual stress inside the molded curved glass, reducing or avoiding the possibility of pits, press marks and other defects, and improving the yield rate of molded curved glass, endows the curved glass product with smooth upper and lower surfaces, and optimizes the appearance quality of the curved glass.

Description

technical field [0001] The invention relates to the field of glass molding, in particular to a curved glass and a molding method thereof. Background technique [0002] With the development of society and the advancement of science and technology, beauty has become an important indicator for consumers to measure when purchasing goods. In order to meet consumers' requirements for product appearance, manufacturers are constantly launching new products with more market momentum. Curved glass is a new development direction that has attracted much attention in the electronics field in recent years. [0003] At present, the industry generally adopts direct hot pressing or mechanical processing to form curved glass. Compared with mechanical processing, direct hot pressing has been widely used because of its relatively simplified process steps and relatively low process cost. The specific method of forming by hot pressing includes using a forming mold, the forming mold includes an u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/03
CPCC03B23/0302Y02P40/57
Inventor 任鹏马兰陈梁
Owner BYD CO LTD
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