Heat bending and shaping glass and preparation process thereof

Abstract

The invention discloses a heat bending and shaping glass and a preparation process thereof. The process includes arranging two opposite edges of the glass on a first supporting member and a second supporting member respectively, and allowing a clearance, allowing the glass to be bent and softened by heating and to fall, between the first supporting member and the second supporting member; applying a first acting force to a first edge of the glass on the first supporting member to form a first bend moment, and applying a second acting force to a second edge of the glass on the second supporting member to form a second bend moment; finally heating the glass to bend and form the glass. The shape of the glass is fine after heat bending and forming since the first and second bend moments match with the evenly-distributed load of the glass, and the concentrating effect of a produced condenser lens is fine; meanwhile, the glass heating temperature is controlled, the heating temperature of the glass surface changes, the shape of produced glass is better, and the concentrating effect of the produced condenser lens is further improved.

Description

technical field [0001] The invention relates to a heat-bending shaped glass and a preparation process thereof. Background technique [0002] In the traditional parabolic mirror molding technology scheme, the method of heating the glass to a temperature above its softening point to make it collapse and fit the mold can ensure the accuracy of the surface shape, but because the glass surface is in contact with the mold at too high a temperature Causes contact damage and reduces its specular reflectivity for high-energy band solar radiation. However, due to the existence of suspended parts, multi-point support molds such as grids, ribs, and flexible rollers are likely to cause surface distortion. The high cost of traditional glass concentrators is also an important factor restricting the utilization of solar heat. Contents of the invention [0003] The first object of the present invention is to provide a preparation process for hot-bending shaped glass. The preparation ...

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Problems solved by technology

[0002] In the traditional parabolic mirror molding technology scheme, the method of heating the glass to a temperature above its softening point to make it collapse and fit the mold can ensure the accuracy of the surface shape, but because the glass surface is in contact with the mold at too high a temperature Causes contact damage and reduces its specular reflectance of high-energy band solar radiation

However, due to the existence of suspended parts, multi-point support molds such as grids, ribs, and flexible rollers are likely to cause surface distortion

The high cost of traditional glass concentrators is also an important factor restricting the utilization of solar heat

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