The water in the cooling flow tunnel penetrates into the glass, and the channel dust and the oil of the mixer fall into the glass. There are cracks in the stove pan, bowl ring or cylinder, the bowl is not installed properly, the mixer position is too high, the machine oil is too much, etc. Can form bubbles in the glass. In addition, bubbles of electrolytic oxygen can also be generated by the contact of precious metals with glass liquids whose temperature and composition fluctuate. The analysis of the gas contained in the bubble is one of the most important data for determining the origin of the bubble. The determination of the gas composition and content in the bubbles is very useful for clarifying the problem of clarification and determining the origin of the bubbles. The cause of the defects may be directly determined based on the gas composition in the bubbles. Such as secondary bubbles caused by heat at high temperatures.
Based on the gas content in the gas bubble, it can be inferred from what type of refractory material, such as the inferred cause. Casting AZS Refractory material erosion Refractory material erosion Casting Al refractories The formation of bubbles in kinescope glass production is mostly close to spherical Bubbles, but also oval bubbles and some irregularly shaped bubbles. The calculation method of the volume of glass bubbles is: where a, b, and c are the length, width and height of the bubble respectively, and K is a constant. The calculated volume and the equivalent sphere volume conversion give the ball volume radius corresponding to the bubble. The internal pressure of the gas can be obtained from the bubble volume obtained from the above equation and the experimental coefficient of the standard gas volume pressure of various gases. Based on the composition, size, and internal pressure of the bubble, the source of the bubble can be inferred. For example, if the content of the bubble is greater than 90 (volume), the diameter of the bubble is converted to be larger than 1 mm, and the internal pressure is high, about 20 to 30 KPa. Bubbles are most likely caused by electrochemical causes.
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