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Key points for custom processing of spherical heat-bent glass in dome architecture at Foshan tempered glass factory

Release time:

Nov 21,2024

　　The processing and customization of spherical heat-bent glass involves several key points, detailed as follows:

　　1. Glass quality requirements

　　Material selection: High-quality flat glass should be chosen as the raw material to ensure that the glass is free from defects such as cracks, bubbles, and inclusions.

　　Glass thickness: Choose an appropriate glass thickness based on the usage scenario and required strength. For spherical heat-bent glass, thicker glass is usually needed to ensure structural stability and strength.

　　2. Heat bending technology requirements

　　Temperature control: During the heat bending process, it is necessary to strictly control the heating temperature and time. Generally, glass can be heat bent when the temperature reaches around 600°C through pressurized heating. Too low a temperature may lead to unsatisfactory bending, while too high a temperature may cause the glass to burn or crack.

　　Pressure control: During heating, appropriate external pressure needs to be applied to promote uniform deformation of the glass. The size and direction of the pressure should be adjusted according to the shape and size of the glass to avoid tearing or breaking.

Heating and cooling rates: The rates of heating and cooling should be moderate; too rapid or too slow changes can adversely affect the glass. It should be ensured that the glass is evenly heated and cooled during the heating and cooling processes to avoid thermal stress and cracking.

　　3. Mold making and positioning

　　Mold design: The design of the mold for spherical heat-bent glass is crucial. The shape, size, and precision of the mold should meet customer requirements and processing needs. Additionally, the mold material should have good heat resistance and wear resistance to ensure the mold's lifespan and processing quality.

　　Positioning and fixing: During the heat bending process, it is essential to ensure accurate positioning and secure fixing of the glass to the mold. This can be achieved using positioning pins, clamps, and other tools. Inaccurate positioning or insecure fixing may lead to deformation or breakage of the glass during heat bending.

　　4. Annealing treatment

　　Purpose of annealing: The purpose of annealing treatment is to eliminate thermal stress and internal defects generated during the heat bending process, improving strength and durability.

　　Annealing process: The annealing process includes three stages: heating, holding, and cooling. Specific annealing parameters should be determined based on factors such as glass thickness, shape, and heating temperature.

　　5. Safety and quality control

　　Safety measures: There are hazards such as high temperatures and high pressures during the processing of heat-bent glass. It is essential to ensure that operators have the necessary safety knowledge and operational skills and wear required protective gear. Additionally, processing equipment should be regularly inspected and maintained to ensure normal and safe operation.

　　Quality control: Strict quality control should be implemented at all stages of the processing. This includes raw material inspection, temperature control, pressure control, mold making and positioning, and annealing treatment. Furthermore, finished product inspection and performance testing should be conducted to ensure that the processed spherical heat-bent glass meets customer requirements and standards.

　　In summary, the processing and customization of spherical heat-bent glass require comprehensive consideration of multiple factors, including glass quality, heat bending technology requirements, mold making and positioning, annealing treatment, and safety and quality control. Only by ensuring that these key points are strictly followed and implemented can high-quality spherical heat-bent glass products be produced.

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