Heat-resistant glass:manufacturer features and scope of application
Table of contents:
The Glass – one of the most ancient and universal of materials. Glass is all around us, but we don't usually think too much about it. These can vary greatly depending on the intended use of the future product. One of the most common types is a heat-proof glass. Let's find out how it differs from conventional and where applicable.
Heat Resistant glass
Glass is an inorganic substance. Characteristic properties of a solid body in the molten state it is viscous liquid. Its fragility, strength, density and heat capacity vary considerably depending on the impurities.
In recent years, materials have been developed which possess atypical for glass properties such as fire resistance. The main parameter that distinguishes it from other glass heat-resistant glass – the temperature at which it retains its properties. It can withstand heat even at 1000 degrees Celsius, while it «colleagues» crack already at 80 degrees.
The resistance is affected by the composition and thickness of the material. If the glass is thick and contains a large proportion of alkaline oxides, it will be durable. The high-temperature-resistant glass – quartz. It withstands large temperature changes and has a high boiling point (2230 degrees).
The Production of heat-resistant glass
As a rule, glass is a mixture of several components. For standard material take quartz sand, lime and soda. They are heated to very high temperatures (1700 degrees), why they are melted and mixed with each other. Thereafter, the mixture is poured into molten tin (they do not mix due to differences in density), and then gradually cooled.
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To give the required properties to these components and add other substances. To make heat-resistant glass, use a variety of oxides. So, in borosilicate material contains boron oxide, quartz – an oxide of silicon.
More strength it will have, if you use several layers. For that he let it cool down completely. The finished sheets are polished, cleaned and cut to the required size. Then a few sheets of glass glued with each other using a special polymer. The final touch is the burning glass “sandwich” at 660-680 degrees.
Usage
Heat-Resistant glass is popular in the kitchen. It is made from ovens and utensils. Common product made of this material is the fireplace. Quartz glass used in the manufacture of optical fibers, Fresnel lenses, crucibles, insulators, etc. are used for Borosilicate optical glasses, glassware, telescopes, or reflectors.
The dishes of heat-resistant glass a lot of benefits. It can withstand even an open fire is lasting. The material is quite inert and does not oxidize when heated, and therefore does not change the taste of food. It is not subjected to corrosion and formation of scales.
Of Course, even a heat-proof glass has drawbacks. It reacts poorly to sharp increase or decrease in temperature. Utensils of this material should not be put on a high heat immediately after the freezer. Besides, fire-resistant glass is not shockproof, and drop it.
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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