A glass reshaping process

A molding process and glass technology, applied in glass molding, glass pressing, glass manufacturing equipment and other directions, can solve the problems of irregular glass shape, reduced product quality rate, uneven product shrinkage, etc., to achieve no change in structure, The effect of avoiding uneven heating and improving the product quality rate

A molding process and glass technology, applied in glass molding, glass pressing, glass manufacturing equipment and other directions, can solve the problems of irregular glass shape, reduced product quality rate, uneven product shrinkage, etc., to achieve no change in structure, The effect of avoiding uneven heating and improving the product quality rate

CN105837050BInactive Publication Date: 2017-05-03四川省洪雅维国光学有限公司
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  • A glass reshaping process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 The technology of glass reshaping comprises the following steps:

[0032] (1) Preparation of coating: Take asbestos powder, silicone modified acrylate resin, methacryloxysilane, aluminosilicate and isopropanol respectively according to the proportioning ratio of 1:1.5:0.02:0.008:1. After the asbestos powder is ground, pass through a 600-mesh sieve, add methacryloxysilane and isopropanol to mix, put it in a high-speed disperser and disperse evenly for 8 minutes, add silicone modified acrylate resin and aluminosilicate to continue dispersing for 3 minutes , that is;

[0033] (2) Coating the surface of the glass blank with paint: use a sponge scraping tool or a brush to dip an appropriate amount of paint from top to bottom to coat with a coating thickness of 30μm, dry at 70°C for 30min, and then Dry at 100°C for 180min;

[0034] (3) Put the coated glass blank on the porcelain box, transport it into the heating zone in the softening furnace through the conve...

Embodiment 2

[0037] Embodiment 2 The technology of glass reshaping comprises the following steps:

[0038] (1) Preparation of coating: Take asbestos powder, silicone modified acrylate resin, methacryloyloxysilane, aluminosilicate and isopropanol respectively according to the proportioning ratio of 1:2:0.04:0.01:1.5. After the asbestos powder is ground, pass through a 600-mesh sieve, add methacryloxysilane and isopropanol to mix, put it in a high-speed disperser and disperse evenly for 8 minutes, add silicone modified acrylate resin and aluminosilicate to continue dispersing for 3 minutes , that is;

[0039] (2) Coating the surface of the glass blank with paint: use a sponge scraping tool or a brush to dip an appropriate amount of paint from top to bottom to coat with a coating thickness of 30μm, dry at 70°C for 30min, and then Dry at 100°C for 180mmin;

[0040](3) Put the coated glass blank on the porcelain box, transport it into the heating zone in the softening furnace through the con...

Embodiment 3

[0043] Embodiment 3 The technology of glass reshaping comprises the following steps:

[0044] (1) Preparation of coating: Take asbestos powder, silicone modified acrylate resin, methacryloyloxysilane, aluminosilicate and isopropanol respectively according to the proportioning ratio of 1:1.5:0.01:0.005:1. After the asbestos powder is ground, pass through a 600-mesh sieve, add methacryloxysilane and isopropanol to mix, put it in a high-speed disperser and disperse evenly for 8 minutes, add silicone modified acrylate resin and aluminosilicate to continue dispersing for 3 minutes , that is;

[0045] (2) Coating the surface of the glass blank with paint: use a sponge scraping tool or a brush to dip an appropriate amount of paint from top to bottom to coat with a coating thickness of 30μm, dry at 70°C for 30min, and then Dry at 100°C for 180mmin;

[0046] (3) Put the coated glass blank on the porcelain box, transport it into the heating zone in the softening furnace through the c...

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Abstract

The invention belongs to the technical field of glass processing and particularly relates to a glass re-shaping process which includes the following steps: (1) coating the surface of a glass blank body with a coating; (2) arranging the coated glass blank body on a porcelain box, conveying the porcelain box into a heating zone in a softening furnace through a conveying apparatus, and performing zoned stepwise heating to soften the glass blank body; (3) performing die-press moulding to the softened glass blank body in a shaping mould; (4) after the die-press moulding, cooling and demoulding the glass, and removing the coating layer on the surface to obtain a performer of glass. The glass blank body is coated with the heat-resistant and -insulation coating, so that the problems of non-uniformity of glass body and generation of shrinkage grains in the glass, which are caused by non-uniform heating and heat-expansion and cold-contraction and the like factors, during the glass re-shaping process are avoided. Through the zoned stepwise heating method, the softening degree of the glass blank body can be controlled well, so that the glass blank body is easily to press and shape and qualified ratio of products is increased.

Description

technical field [0001] The invention belongs to the technical field of glass processing, and in particular relates to a glass reshaping process. Background technique [0002] Before the glass is prepared for further processing of optical devices, it is often necessary to process the glass blank into preforms of various specifications. The quality of the preform is directly related to the quality of the final optics product. The process of reshaping glass blanks into preforms usually includes the steps of glass softening, compression molding, and cooling and demoulding. During this process, the thermal expansion coefficient of glass plays a vital role in the reshaping of glass. The range of temperature fluctuations in the glass remolding process is very large, resulting in uneven shrinkage of the product, which eventually leads to the need to shave off the uneven glass body during subsequent deep processing, resulting in waste of raw materials and a significant reduction in ...

Claims

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Application Information

Patent Timeline
03 May 2017
Publication
CN105837050B
IPC
C03C17/00
CPC
C03B11/00; C03C17/009; C03C2217/29; C03C2217/445; C03C2217/475
Inventors
杨维国; 牟建国