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Detection method of long air bubbles in overflow down-draw forming glass

A detection method and technology of bubbles, which are used in measuring devices, material inspection products, instruments, etc., to achieve the effect of ensuring accuracy

Active Publication Date: 2021-08-17
KORNERSTONE MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is no patent or technical literature that discloses the long-bubble detection method involved. Therefore, in order to meet the analysis needs of production, it is necessary to provide a method suitable for detecting long-bubbles in overflow down-drawn glass

Method used

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  • Detection method of long air bubbles in overflow down-draw forming glass
  • Detection method of long air bubbles in overflow down-draw forming glass
  • Detection method of long air bubbles in overflow down-draw forming glass

Examples

Experimental program
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Embodiment 1

[0024] Long bubble test method flow:

[0025] 1. Select the glass sample 101 with the long axis of the bubble 102 larger than 5cm, hold the two ends of the glass 101 with tweezers with both hands, and place it in a suitable position under the butane gas flame to burn it. During the process, control the angle of the glass sample and rotate it in a small range Samples, avoiding the infiltration of external gas into the bubbles until the long bubbles are fused into 2 independent complete small bubbles.

[0026] 2. The newly made glass samples were subjected to figure 2 As shown in the pre-cutting, the cutting tool can be a diamond sheet cutting machine or a cutting knife. At the same time, in order to reduce the new interface area caused by sample preparation, it is best to choose a cutting blade with a thickness less than 0.4mm.

[0027] 3. Clean the pre-cut glass sample with alcohol, put it in the bubble analyzer, and test it according to the instrument operation manual.

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Abstract

The invention belongs to the technical field of glass quality evaluation, and in particular relates to a detection method for long bubbles in overflow down-draw forming glass. In the present invention, a glass sample containing long bubbles is divided into two or more independent small bubble samples by a flame combustion method. Pre-cut the glass sample with complete small bubbles, and then use the bubble analyzer to detect the composition and content of the bubble gas. After the composition test, the broken glass sample is further analyzed by the optical microscope for the position of the bubble inside the glass. The invention uses a special sample preparation method so that the sample to be tested can be tested by the instrument method without being limited by the length and size, which not only ensures the accuracy of the test, but also does not increase too much testing cost.

Description

technical field [0001] The invention belongs to the technical field of glass quality evaluation, and in particular relates to a detection method for long bubbles in overflow down-draw forming glass. Background technique [0002] Bubble defects are one of the most common glass defects in the process of overflow down-draw glass manufacturing. The existence of bubble defects has a serious adverse effect on the company's production and product quality, especially large-scale defects will greatly reduce product quality. Rate. How to accurately analyze the cause of bubbles is a necessary prerequisite for us to correctly deal with bubble defects, and analyzing the gas composition and percentage in bubbles is an effective means for us to judge the cause of bubbles. [0003] At present, there are mainly two kinds of chemical methods and instrument methods for the detection of glass bubble components. Among them, the chemical method is to use the principle of water gas analysis to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/38G01N21/84
CPCG01N21/84G01N33/386
Inventor 陈招娣梁新辉洪立昕
Owner KORNERSTONE MATERIALS TECH