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Category: Automotive
Type: Public
Created: Nov 8, 2018
Members: 1
Views: 6
Location: Newyork , United States
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ahwhglass OFFLINE
glass curtain wall


Three reasons for the scattering of magnifying glaas curtain wall in insulating glass
The coated insulating glass is definitely an insulating glass composed with one coated glass the other piece of other goblet. In order to safeguard the film from atmospheric erosion and increase the service life, the coated surface should face back to the inside.

Coated insulating glass is generally used for glass curtain walls of buildings. For architectural ornament, it brings an incredible, generous and bright image into the building, enhancing the beauty of the building. However, in genuine use, we often realize that some buildings using coated insulating Laminated insulated glass show image scattering. Make the beauty in the building disappear and even possess a negative impact. The author conducted a detailed study on this challenge, and conducted a a number of investigations and experiments to evaluate relevant data at dwelling and abroad, and amassed data for analysis.
The basic principle of scattering of the coated hollow glass image is the glass cannot form an integral plane within the curtain wall or the area part is not some sort of plane, but is curved, which causes the photograph to scatter, even right mirror shape. The reasons why you are this phenomenon are complicated and multifaceted:

First, why for design and installing:

With the rise as well as increase of high-rise houses, people's requirements for that aesthetic appearance of houses have increased, and this particular use of glass panels has grown larger and larger. The wind pressure load for the glass itself also improves. There are two types of wind pressure loads to the glass: internal wind stress and external wind strain load. When the external wind pressure from the insulating glass is in excess of the internal wind strain, the glass surface will be curved inward, and the surface belonging to the glass is concavely bent; and when the inner wind pressure is greater than the external wind force, the surface of the actual glass is outwardly curved to get convex; only when inside and outside When the compressive loads are similar or close, the cup can form a jet. Therefore, in the style and installation, the wind pressure load from the glass should be fully considered. This wind load is not only the external wind pressure load around the glass itself, but also the combination of the wind pressure place inside and outside this hollow glass.

The change of heap inside and outside the actual insulating glass varies using the change of the ambient temperature along with the installation area. The difference in pressure between the regions is extremely large, especially in the particular plains and plateaus. If the products produced in the plain area are utilized in the plateau region, the inside of the particular insulating glass is positively pressed and the glass is drummed facing outward. On the contrary, it becomes a poor pressure and the glass is concave inward. For that reason, when designing the insulating glass to be installed in different regions, the structure and specifications from the insulating glass product really should be designed according to all the regions and the highest wind pressure. The influence in the change of the ambient temperature to the load change of the insulating glass is principally manifested by the change on the volume of the dry air sealed into the hollow glass with the change in the temperature, thereby causing your internal load to adjust, and the glass floor is bent inward and outward. After repeated experiments by HotTag, to get 550mmx1100mm (5+9+5) mm oblong coated insulating glass, the displacement of the biggest market of the single-sided glass exterior changes about 0. 03mm for every 1 °C change throughout ambient temperature. It is so visible that the change in temperature features a considerable influence on the flatness of the insulating glass.

Insulating a glass has unique installation along with construction conditions. During the construction of the glass curtain wall, when it comes to construction within the installment and construction specifications, once the glass is sealed, the thickness belonging to the peripheral sealant is even, and the metal body plus itself has deflection or joint connection, so the fact that glass cannot be from the same plane or but the whole In the exact plane, there is your local variation, which also can cause image scattering.
2nd, the reason for that processing of glass, generation methods

As we all know, most of the actual insulating glass produced within China is vertical laminated along with horizontally sealed. During your splicing process, the glass itself isn't affected by the force and isn't going to deform. However, when the glue is sealed, top of the glass is bent by its gravity, and the decrease glass is bent upward, and the air in which presses the inner room overflows outward. Although it truly is only a trace amount of money, after the sealant, a slight negative pressure is generated inside the insulating glass. The a couple pieces of glass could bend inward. Especially if your two pieces of glass are thin, the product specifications become more obvious. When the ambient temperature is lowered and also the external air pressure is definitely increased, the curvature with the glass is also increased until both pieces of glass will be bonded together, and the energy saving effect with the insulating glass is misplaced.

Third, the inevitable cause

In order to ensure the airtightness from the window during installation, it is generally necessary to seal the glass and the metal frame with the sealant. However, as the temperature changes, the coefficient of enlargement between the glass plus the frame is different. Tensile or compressive stress is generated round the glass. Although there is a sealant as a load, this stress cannot possibly be completely eliminated. If the particular ambient temperature changes, the stress can be increased. As a result from the stress, the deformation with the edge of the magnifying glaas is increased, and even the glass is broken. This situation is generally found on monolithic magnifying glaas.

In the actual development process, the selection in the original glass piece carries a great influence on the bending resistance on the glass. Generally, in tempered cup, heat-strengthened glass and everyday glass, from the point of wind pressure level of resistance, tempered glass is the biggest, and heat enhancement is usually second. These two a pair of glasses are better to resist external stress than standard glass. Therefore, we recommend to use tempered coating or heat-enhanced coated glass as being the original film when providing coated insulating glass; the product variety ought to use inflatable glass whenever possible, and it is suitable to relieve the specification of a glass and reduce the glass deformation brought on by various reasons.





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