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How is the curved glass made?

  • Author:Fanyu
  • Source:Https://www.glass.com.cn
  • Release on :2018-09-26
In recent years, people's living standards have increased rapidly, and higher requirements have been placed on the performance of glass materials. In order to enhance the safety and artistry of glass, manufacturers have introduced a number of new glass products, which are powerful and attractive. For example, a dimming glass that can be controlled by on/off control transparency is more practical than conventional frosted glass. Next, look at how the hot-bent glass is made, as well as the technical requirements for hot-bending glass, and learn about it.

tempered glass

First, how is the curved glass made?

The glass is pre-processed (cut to the required size) and then heated to a softening temperature, and then by its own weight or external force, the glass becomes a non-planar shape that matches the mold in various specific molds, and then Annealing process to make the required curved glass, can make hot bending, hot bending, hot bending and other composite products.

Bending tempered glass or curved heat reinforced glass is formed by bending the glass and then rapidly air-cooling by special equipment.

Second, the technical requirements of hot bending glass

Hot-bending glass is classified into three categories: single bend, bend, and composite bend.

For a single curved architectural glass, glass bending is relatively easy. However, many manufacturers often have a curve edge of approximately 150 mm from the straight side of the product, which cannot be well matched with the mold, and some of them exceed the standard requirements, resulting in difficulty in installation. To solve this problem, it is first required that the electric heating arrangement of the hot bending furnace should be reasonable, and local heating can be realized, and the direction in which the product is placed should be consistent with the direction of the heating wire.

Commonly used in bending hot-bending glass are aquarium glass and counter glass. The main technical difficulties of bending glass are the bending of straight lines and the appearance of mold marks at the corners. Therefore, curved glass is also very common, such as spherical glass, curved arched profiles, glass wash basins, etc. This glass requires a high level of skill in hot bending operations, making precise molds, and some require professional heat. The curved furnace can be completed.


Glass is an amorphous inorganic non-metallic material, generally made up of a variety of inorganic minerals (such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) as the main raw material, and a small amount of auxiliary materials are added. of. Its main components are silica and other oxides. The chemical composition of ordinary glass is Na2SiO3, CaSiO3, SiO2 or Na2O·CaO·6SiO2, etc. The main component is a silicate double salt, which is an amorphous solid with a random structure. Widely used in buildings, used to separate light from the wind, is a mixture. There are also colored glass in which certain oxides or salts of metals are mixed to form a color, and tempered glass obtained by physical or chemical methods. Sometimes some transparent plastics (such as polymethyl methacrylate) are also called plexiglass.