Corner glass piece toughening treatment process

Abstract

The invention discloses a corner glass piece toughening treatment process, which comprises the following steps of: heating a glass plate, and shaping by using a corresponding mold; and blowing air to two sides of the formed glass product by using a blowpipe in a corresponding shape to make the glass product immediately cooled to room temperature, and adjusting the aperture of nozzles at a corner and the distance between the nozzles to make the cooling speed of the internal and external bent parts at the corner of the glass consistent with that of the plane part. Through the process, corner glass with a bent angle of 90 degrees or more than 90 degrees and small bend degree R can be subjected to toughening treatment, the forming precision of finished products is high, the appearance quality of the products is excellent, the finished product ratio is high and the granularity is uniform.

Description

technical field [0001] The invention relates to a method for manufacturing glass products, in particular to a tempering treatment process for corner glass parts. Background technique [0002] Since tempered glass came out in the 1960s, because its strength is 4 to 5 times higher than that of ordinary glass, even if it is hit by a large impact, it will only shatter as a whole without breaking and hurting people. , automotive glass and floor curtain wall glass are widely used. [0003] Glass hot bending and tempering technology has existed for a long time. First, the glass plate is uniformly heated in the furnace (electric heating, hot air) to 4000-5000 ℃ to soften the glass, and the glass is bent into the desired shape by its own weight or external extrusion force, and then Through the upper and lower blowing outlets with the same bending angle, the glass surface is blown at the same time, the cooling is uniform and rapid, and the surface tension is increased to achieve the ...

AI Technical Summary

Problems solved by technology

[0003] Glass hot bending and tempering technology has existed for a long time. First, the glass plate is uniformly heated in the furnace (electric heating, hot air) to 4000-5000 ℃ to soften the glass, and the glass is bent into the desired shape by its own weight or external extrusion force, and then Through the upper and lower blowing outlets with the same bending angle, the glass surface is blown at the same time, the cooling is uniform and rapid, and the surface tension is increased to achieve the purpose of tempering; the glass tempering process requires stricter requirements, especially the blowing cooling must be very uniform, otherwise it will cause uneven cooling speed. Therefore, glass tempering crafts are suitable for the manufacture of flat glass or glass with large curvature; at present, there are several types of thermal tempering furnace products, such as transverse bending, longitudinal bending, and mold bending, but transverse bending and longitudinal bending tempering There is no problem in bending steel for arc-shaped glass in the furnace; for corner glass products with a bending angle of 90 degrees or more, it is difficult to control the cooling rate at the corner and the plane part to be consistent, so it is difficult to bend Tempering treatment of corner glass with an angle greater than 90 degrees; although the molded type can also be bent at 90 degrees, the bending angle R is too large. If you must make a product with a relatively small corner R, the stress at the corner will be too large, which is easy Damage, and the yield is low, especially serious is the uneven particle size after tempering, high self-explosion rate (over 2%), can not meet the EU technical standards

At home and abroad, there is currently no mature solution

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