Hot bent glass is a curved glass made by heating and softening flat glass, bending and annealing it in a mold, which combines aesthetics and functionality.
1、 Core Process and Classification
• Process principle
(1) Heating softening: Heat the flat glass to the softening point of 600-650 ℃ and shape it by self weight or mold pressure;
(2) Annealing treatment: Slowly cool down to below 280 ℃ to eliminate internal stress and avoid self explosion in the later stage.
•Bending type
|
Type |
Technical difficulties |
Typical application scenarios |
|
Single bend |
Insufficient adhesion at the edge of the curve |
Building doors and windows, curved curtain walls |
|
bend |
Easy to show mold marks at corners/curved straight edges |
Glass counter, aquarium |
|
Composite bending |
High precision molds and professional equipment are required |
Spherical decoration, arched corridor |
2、 Performance characteristics
|
Indicator |
Parameters/Characteristics |
Compared to ordinary glass |
|
impact resistance |
Can withstand the impact of a 1040g steel ball at a height of 1 meter without breaking |
Ordinary glass is fragile |
|
bending strength |
≥ 200MPa (tempered hot bending version) |
Ordinary glass ≤ 70MPa |
|
safety |
Broken into non angular particles after tempering |
Non tempered steel has a risk of cutting |
|
Degree of freedom in design |
Customizable irregular surfaces without connecting ports |
Limited to flat or simple radians |
Note: Tempered hot bending glass combines safety and high strength, but ordinary hot bending glass has lower strength and is only suitable for decorative scenes.
3、 Application scenarios and selection
• Construction field
(1) Curtain wall and skylight: Composite curved glass creates a streamlined appearance, with customizable light transmittance;
(2) Arched corridor/sightseeing elevator: Single curved or bent glass enhances the sense of spatial extension.
• Home and Business
(1) Fish tank: ≤ 80cm small tank (large tanks are prone to bursting due to water pressure);
(2) Glass furniture: coffee table, washbasin, artistic decoration (tempered steel to ensure safety);
(3) Commercial display: curved counter, mirrored wall (transparency>70% to ensure display effect).
• Technological upgrade direction
(1) Hot bendable coated glass: In 2025, the new double silver coated glass supports hot bending, balancing insulation and curved surface design;
(2) Intelligent integration: curved glass combined with dimming/power generation functions, suitable for low-carbon buildings
4、 Installation
• Selection suggestions
(1) Tempered hot bending glass with a thickness of ≥ 6mm must be selected for pressure bearing scenarios such as fish tanks and curtain walls;
(2) The large-scale curved surface priority continuous hot bending furnace technology for construction ensures uniform heating.
5、 Process Trends
(1) Mold Innovation: The precision of graphite molds has been improved to 0.01mm, supporting complex free-form surfaces;
(2) Energy saving: The continuous hot bending furnace at the workstation reduces energy consumption by 40% and improves mass production efficiency.
Bent glass
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GLASS ENCYCLOPEDIA
Can frosted glass be cleaned with wet wipes?
→ Okay! Recommend using glass cleaner and fish scale cloth to avoid scratching the matte layer with hard objects.
How to choose between single-sided frosted and double-sided frosted?
→Single sided frosted (smooth surface facing inward) is easier to clean; Double sided frosted provides stronger privacy.
Will frosted glass reduce light transmittance?
→ It will decrease by about 20% -40%, and the ultra white glass substrate can reduce the loss of light transmission.
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