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Method and device for ceramising base glass of glass ceramic

A glass-ceramic and ceramization technology, applied in glass production, glass manufacturing equipment, glass transportation equipment, etc., can solve the problems of heating the substrate glass, such as high heat and long time.

Inactive Publication Date: 2005-12-21
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heating the base glass also requires a lot of heat and a long time

Method used

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  • Method and device for ceramising base glass of glass ceramic
  • Method and device for ceramising base glass of glass ceramic
  • Method and device for ceramising base glass of glass ceramic

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] figure 1 A pallet 1 is shown as a floating base. The support plate 1 supports a diaphragm 1.2 made of porous material. The carrier plate 1 and the membrane 1.2 are located in a housing 2 with an air inlet 2.1 and an air outlet 2.2. The pallet 1 has a gas connection 1.1. A base glass 3 in the form of a glass pane is located above the membrane 1.2.

[0044] The housing 2 encloses a wall 2.3 with strong IR reflective properties. The device includes an array of IR rays, not shown here.

[0045] The gas passing through the openings of the diaphragm 1.2 is introduced through the gas connection 1.1. An air cushion is formed between the upper surface of the membrane 1.2 and the lower surface of the preform 3 . The preform spins on this air cushion until the ceramization time is complete.

[0046] The device is suitable for both batch and continuous operation. The housing 2 can also be designed as an elongated chamber with the inlet on one front side and the outlet on th...

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Abstract

The invention relates to a process for ceramizing glass ceramics (so-called glass gobs). The process according to the invention comprises the following procedural steps: production of a glass gob; suspension of the glass gob on a suspending base by the supply of suspending gas; heating of the gob in suspension by infrared radiation until, for example, the required ceramization up to the moment it starts.

Description

technical field [0001] The present invention relates to the field of ceramizing the base glass of glass ceramics. The base glass is also called a green glass. Background technique [0002] It is known to ceramize such base glasses in conventional convection or radiant furnaces. The glass is mainly in the form of a rectangular block and is placed on a support plate which may consist of sintered quartz glass powder or granules, a porous material. [0003] When heated, the vitreous material expands in all directions, while the support plate remains relatively dimensionally stable due to its extremely small coefficient of expansion. Then, a relative movement occurs between the base glass and the pallet, which movement may cause the glass to be scratched, resulting in a decrease in product quality. Most of the relative motion (cause of scratching) is caused by contraction. Heating the base glass also requires a lot of heat and a long time. Contents of the invention [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B32/02C03B29/12C03B35/24C03C10/00
CPCC03B29/12C03B32/02C03B35/24C03B35/246Y02P40/57
Inventor 格哈德·哈恩安德烈亚斯·兰斯多夫乌尔里克·福瑟林厄姆豪克·埃塞曼伯恩德·霍普西比尔·纳特根斯
Owner SCHOTT AG
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