Method for detecting long bubbles in overflowing pull-down-moulded glass
A detection method and air bubble technology, applied in the direction of measuring devices, material inspection products, material analysis through optical means, etc., to achieve the effect of ensuring accuracy
Active Publication Date: 2018-11-06
KORNERSTONE MATERIALS TECH
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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
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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 particularly relates to a method for detecting long bubbles in overflowing pull-down-moulded glass. The method comprises the following steps: cutting a long bubble of a long bubble-containing glass sample into two or more independent small bubble samples by a flame combustion method; pre-cutting a glass sample carrying acomplete small bubble to obtain a sample, and then detecting gas components of the bubble and the contents thereof by using a bubble analyzer; for the broken glass sample after component testing, further analyzing the position of the bubble in the glass by using an optical microscope. Through a special sample preparation means, the sample to be tested can be tested by an instrument method withoutbeing limited by the length dimension, so that not only the testing accuracy is ensured, but also excessive detection cost can not be increased.
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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IPC IPC(8): G01N33/38G01N21/84
CPCG01N21/84G01N33/386
Inventor 陈招娣梁新辉洪立昕
Owner KORNERSTONE MATERIALS TECH