Do You Know About High Borosilicate Glass?
High borosilicate glass (also known as hard glass) is made by using the electrical conductivity of glass at high temperatures, using an advanced production process to melt glass by heating inside the glass. It is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmission and high chemical stability. Due to its excellent performance, it is widely used in solar energy, chemical industry, pharmaceutical packaging, electric light source, handicraft and other industries.
The common glasses in the market are soda lime glass (ordinary glass), tempered glass and high borosilicate heat-resistant glass.
High borosilicate heat-resistant glass can withstand an instantaneous temperature difference of about 150℃. It is safe to serve hot and cold drinks. The main process is manual bottle blowing and semi-automatic assembly line.
Ordinary glass can only withstand a temperature difference of 75℃ instantly. It is mainly used for cold beer, mainly for the pressing process and iron pipe blowing process.
Thicker tempered glass is generally not used for cups. The specific methods for distinguishing high-silicon boron are as follows.
1. The cup with thicker bottom is not made of high borosilicate glass.
2. Double glass, most of which is made of high borosilicate heat-resistant glass.
3. The glass with handles light and thin. 2 mm thick glass is usually high borosilicate glass.
4. High borosilicate daily use of water glasses are mainly artificially blown. The raw material is mainly high borosilicate glass tube, softened by high temperature firing and put into the mold, used to rotate or fix the blowing mold.
The difference between high borosilicate glass and ordinary glass
Ordinary glass is soda lime glass, whose main component is at least 70% silicon and does not contain boron. So it can only withstand an instantaneous temperature difference of 75 degrees. In our daily life, ordinary glass is widely used, mainly for cold drinks, mainly for pressing process and blowing process.
High borosilicate glass (also called hard glass) is a special glass material with low expansion, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability.
The main components of high borosilicate glass are 12.5-13.5% boron and 78-80% silicon, so high borosilicate glass has excellent acid resistance, and the strain temperature difference of high borosilicate glass is 520 degrees. Therefore, it does not contain toxic substances, and the high temperature and acid resistance of high borosilicate makes it less likely to precipitate harmful substances in daily drinking water use.
The main processes are manual bottle blowing and semi-automatic assembly line, and special case pressing. So borosilicate glassware is usually light and thin. There are some high borosilicate glassware for your reference, such as single wall and double wall glass, hot tea glass bottles and kettles, storage jars, etc.
Tips for using high borosilicate glass.
1. Prohibit direct heating by open flame
2. Prohibit vacant microwave ovens
3. When removed from microwave oven, it should be placed on a dry plate and should not touch wet and cold objects.
In a word, compared with ordinary glass, high borosilicate glass has good heat and acid resistance, which is very convenient for us to drink hot tea and coffee.
The source is from here.