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Glass production apparatus and method

A glass manufacturing and glass technology, which is applied to glass manufacturing equipment and manufacturing fields, can solve the problems of difficult manufacturing, leakage of molten glass, increased cost, etc., and achieve the effects of controlling productivity reduction, prolonging life, and facilitating loading and unloading.

Inactive Publication Date: 2006-03-22
HOYA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Even if the melting vessel is partially damaged, the molten glass will leak, making it difficult to manufacture continuously, so the melting vessel must be repaired or replaced
The repair or replacement of the melting vessel not only increases the cost, but also forces the production to stop for a certain period of time

Method used

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  • Glass production apparatus and method
  • Glass production apparatus and method
  • Glass production apparatus and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] use figure 1 and figure 2 The optical glass manufacturing apparatus shown compares the case where the protective member 70 is installed in the melting tank 20 to melt the optical glass material and the case where the optical glass material is melted without the protective member 70 in the melting tank 20 .

[0069] The material was intermittently poured into the melting tank 20 from the material supply part 10, and the temperature change of the outer part of the melting tank 20 opposite to the part contacting the molten glass liquid surface was observed.

[0070] Such as Figure 4 As shown, in the melting tank 20 not equipped with the protective member 70, the temperature near the liquid surface of the melting tank 20 is kept at about 1190°C by heating, and the temperature drops to about 1060°C due to the feeding of materials, and the temperature difference is almost 130°C. On the other hand, the inner side of the melting tank 20 causes a larger temperature change. ...

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PUM

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Abstract

The invention prevents the fatigue and the failure of a melting vessel caused by thermal shock by relaxing the thermal shock produced on a part in contact with the liquid surface of a molten glass inside of the melting vessel when the material of an optical glass is supplied to the melting vessel. This apparatus for manufacturing the optical glass is provided with the melting vessel (the melting vessel) 20 for melting the raw material of the optical glass and a material supply part (a material supply means) 10 for continuously or intermittently supplying the material to the melting vessel 20 and the part in contact with the liquid surface of the molten glass inside of the melting vessel 20 is covered with a freely detachable protecting member 70.

Description

technical field [0001] The present invention relates to a glass manufacturing apparatus and method for continuously or intermittently feeding a glass material into a melting vessel and melting the material in the melting vessel, and particularly relates to melting the glass material using a melting vessel formed of a precious metal such as platinum or a precious metal alloy. Apparatus and methods applicable to the manufacture of optical glass in which the above-mentioned materials are melted. Background technique [0002] Glass is mainly made of powdered glass component oxide, which is produced by melting the material at high temperature. Especially for optical glass, in order to obtain the necessary homogeneous optical properties well, not only the ratio of materials is strictly required during manufacture, but also it is required to put the materials into the melting vessel one by one in an appropriate amount. [0003] It is known to supply an optical glass material into ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/00C03B3/00C03B5/08C03B5/425
CPCC03B5/425Y02P40/57
Inventor 下西司铃木恒司宫崎敏幸坂和博幸
Owner HOYA CORP