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Efficient and energy-saving method for overcoming glass surface tin point defect

A glass surface, high-efficiency and energy-saving technology, applied in the field of glass, to achieve the effect of improving tin point defects, achieving production efficiency, and high production efficiency

Inactive Publication Date: 2016-11-23
WUJIANG CSG GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical defects, the object of the present invention is to propose a high-efficiency energy-saving method that can fundamentally solve the problem of tin liquid and tin bath shielding gas from being polluted, and improve the tin point defects on the glass surface.

Method used

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Experimental program
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Embodiment

[0020] A high-efficiency and energy-saving method for improving tin point defects on glass surfaces, comprising the following steps:

[0021] (1) Pass protective gas into the high temperature zone, medium temperature zone and low temperature zone of the tin bath at the same time, and the flow ratio of the protective gas is 3:14:3. Since the protective gas is composed of hydrogen and nitrogen, and the speed of hydrogen diffusion is very high Fast, so it can only control the upper layer of the tin bath to control the airflow ratio of 3:14:3, that is, 15% in the high temperature zone, 70% in the medium temperature zone, and 15% in the low temperature zone, so as to ensure that the airflow is uniform from the medium temperature zone to the high temperature zone and low temperature zone spread across the area. The original protective gas distribution ratio is 31% in the high temperature zone, 46% in the medium temperature zone, and 23% in the low temperature zone. Such a setting ra...

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PUM

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Abstract

The invention provides a high-efficiency and energy-saving method for improving tin spot defects on the glass surface. Through multiple steps, the clean atmosphere of tin liquid and protective gas in the tin bath can be realized, and the production quality can be effectively improved. At the same time, the installed parts in the tin bath can be Adjustment and improvement reduce heat energy loss and mechanical loss, achieving the goal of high efficiency and energy saving.

Description

technical field [0001] The invention relates to the field of glass, in particular to a high-efficiency and energy-saving method for improving tin spot defects on the glass surface. Background technique [0002] The forming of float glass is done by tin bath. The tin bath is a dynamic leveling system, so production defects often occur. During the forming process of the glass in the tin bath, the floating medium tin liquid and the tin bath shielding gas will be polluted, and the online coating in the tin bath will have related defects, which are mainly divided into the defects of the upper surface and the lower surface. Production The common defects are: cassiterite, board surface stains, tin drop pits, surface tin drops, tin stains, tin splashes, curtain scratches, tin sticking, rainbow tempering, tin spots, air bubbles, and common film color differences in coatings , Color skew, spots, color bands, pinholes, fog spots, weathering and release of film and other defects, thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B18/18
Inventor 郝成东高强雷永红何海平钟志才
Owner WUJIANG CSG GLASS CO LTD