How is glass made

2025-09-27 1963

Nowadays, there are various types of glass that can meet the different needs of different occasions. The properties of glass are stable, resistant to strong acids and alkalis, and durable. By adjusting the materials and processes used to manufacture glass, manufacturers can greatly change the properties of glass materials, making it one of the raw materials required for most important equipment. Do you want to further understand what information glass is made of and what types are available? Why don't you read this article.

What is the original information of glass:

General glass: limestone, soda ash, quartz

Real glass: sandstone, feldspar, dolomite, soda ash

Glass coated with online coating: sandstone, feldspar, dolomite, soda ash, plus silane gas and ethylene gas

Glass is composed of sand and other chemical substances melted together, forming a continuous network structure during melting. During the cooling process, the viscosity gradually increases and hardens, resulting in the formation of crystalline silicate non-metallic materials. The chemical composition of general glass is Na2O · CaO · 6SiO2, mainly composed of silicon dioxide, which is an amorphous solid with an irregular structure. Widely used in buildings, it belongs to a mixture There are colored glasses that are mixed with oxides or salts of certain metals, as well as tempered glass made by special methods. Sometimes, some transparent plastics are also called organic glass.

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The steps of manufacturing glass mainly include:

① Pre processing of materials. Crush block shaped materials (such as quartz sand, soda ash, limestone, feldspar, etc.) to dry wet materials, and remove iron from iron containing materials to ensure the quality of glass

② Preparation of cooperative materials

③ Melting. Glass cooperative materials are heated at high temperatures (1550-1600 degrees) in a tank or crucible kiln to form uniform, bubble free liquid glass that meets the forming requirements

④ Forming. Process liquid glass into products of the required shape, such as flat plates, various vessels, etc

⑤ Heat treatment. Through annealing, quenching and other processes, stress, phase separation or crystallization inside the glass are eliminated or occur, as well as the structural state of the glass is altered

Microcrystalline glass is a special type of glass material composed of uniformly distributed small crystals grown in a glass substrate through additional heat treatment. It may be said to be a type of material made by glass technology with ceramic like functions.

Quartz glass is a glass composed solely of silicon dioxide, made from materials such as crystal, silica, and silicides, melted at high temperatures or deposited by chemical vapor deposition.

Photochromic glass, also known as photochromic glass, is a type of glass that can change its color according to the intensity of light. It undergoes absorption and darkening when exposed to light, and automatically fades and regains brightness after the light stops. This glass has a wide range of composition systems, including borosilicates, borates, phosphates, and alkali aluminosilicates. Depending on the system, photosensitizers in the glass can be introduced such as silver halide, silver molybdate, copper halide, cadmium halide, thallium chloride, etc.

Optical glass is divided into two categories: crown glass and flint glass, as well as more than a dozen subcategories, with approximately 200 trademarks. Each trademark must have regular optical constants, optical uniformity, transparency, and chemical stability. Some optical glasses also require special dispersion. Optical glasses require relatively pure materials, and the molten glass liquid needs to be stirred. Depending on the characteristics of different glasses, methods such as crucible melting, continuous melting, and high-frequency melting can be used. After the forming process, techniques such as crucible breaking, pouring, rolling, dripping, liquid absorption, and pressing can be used.

Laser glass is a laser working substance made by doping certain activated ions into glass as the base.

Article source: Tempered glass coverwww.yinghuade.com