Introduction to the composition of U-shaped glass materials
U-shaped glass, also known as trough glass, is called U-shaped glass because of its U-shaped cross-section. Quartz sand is used as the main raw material, and it is made by high-temperature melting, rolling, annealing, and cooling.
Composition of U-shaped glass materials: U-shaped glass is mainly composed of the following four components.
1. Basic components
U-shaped glass contains four elements: silicon dioxide, sodium oxide, calcium oxide, and magnesium oxide. Silicon dioxide is the main component of glass and comes from quartz sand. Adding sodium oxide can reduce the melting point of silicon dioxide raw materials, and soda ash can provide a large amount of sodium oxide; calcium oxide is another important component, and there is a large amount of calcium oxide in limestone and dolomite. Magnesium oxide is often added to the raw materials. Dolomite can provide a large amount of magnesium oxide.
2. Trace components
In addition to the above basic elements, U-shaped glass will also add some auxiliary materials as needed. Alumina is usually used to effectively increase the moisture resistance of glass. Furthermore, when producing plain U-shaped glass, adding iron red powder can effectively remove the bubbles formed by carbon dioxide in the raw materials, making the glass clearer. However, iron red powder cannot be used as the raw material of ultra-white U-shaped glass due to its coloring. Some oxidants can also be added to make the glass more crystal clear. Some colorants can also be added to change the color of the glass, such as cobalt, selenium, nickel, etc.
3. Clarifier
In industrial production, a certain amount of sodium sulfate should be added to the glass raw materials as a clarifier, which can effectively discharge gases such as carbon dioxide contained in liquid glass and make the glass clearer.
4. Broken glass
The purpose of adding broken glass to the raw materials is to effectively lower the melting point of the raw materials and make them easier to process.
The above four raw materials are weighed and mixed in different proportions, sent to the melting furnace, and U-shaped glass is obtained after product molding, annealing, cooling, and cutting. In industry, U-shaped glass can also be further processed, such as tempering, sandblasting, high-temperature colored glaze, etc., to achieve the ideal effect.
