processing requirements of curtain wall glass

First of all we should select in the super white float glass, that is, on the market we can buy the best curtain glass window, because the quality of the original glass is the decisive factor of whether the tempered glass self-explosion. Super-large structural glass has higher requirements for the defects on the surface of the glass. Usually, dot defects above 1.0mm are not allowed to exist. For dot defects less than 1.0mm, 1 /10 square meters is allowed. Appearing linear defects on the glass surface and defects affecting the properties of the glass are not allowed. Because the super-large tempered glass must be homogenized, in order to reduce the self-explosion rate of the homogenized tempered glass, the original piece must be cleaned and checked before cutting to avoid using unqualified original piece. It is strictly prohibited to use the unqualified original film with hard wounds, stones in the direction of thickness and dense micro-bubbles.

Then the curtain wall panel should be precisely cut and edge processing. The allowable side length deviation of general glass is usually ±2 ~±3mm. For large glass, the allowable side length deviation is usually mm, or even greater. For structural glass, such side length allowable deviation is too large, because structural glass requires accurate alignment, side length allowable deviation is usually mm, 1.5mm side length deviation is too large to meet the engineering requirements. The edge of the structural glass requires chamfering, and should be three-side fine grinding and three-side polishing, because the glass plate of curtain wall construction in the cutting process is in the edge of a large number of cracks, these cracks will greatly reduce the end strength of the glass plate, through the three-side fine grinding, polishing, which can be glass plate edge crack removal, to improve the purpose of glass strength.

Curtain wall facade usually requires drilling in the glass plate. The allowable diameter deviation of the circular hole of general glass is usually mm, and the allowable diameter deviation is greater for the glass of large aperture. This is too large for structural glass, where the allowable diameter deviation is usually mm. Structural glass aperture deviation requirements are not only high, and the hole edge should be fine grinding, polishing processing, because the glass plate hole edge stress concentration, aperture size deviation is too large and the hole edge processing is low, easy to cause glass plate in use because of uneven force on the hole edge and crack from the hole edge.