Performance of aluminum doors and windows of Hummer broken bridge

1, wind pressure intensity

Although the plastic steel window has a steel lining, there is no connection between the steel lining and the steel lining, so the strength is not as high as that of the broken bridge aluminum alloy, and the wind pressure strength is also lower than that of the broken bridge aluminum alloy.

2. Impermeability

Because the sash (inner flat) of the plastic-steel window is not in the same plane with the frame, it is concave indoors, so it is easy to accumulate water (it will not enter the room) and needs to be drained through the drainage trough, so it will not condense in winter. However, the opening fan and frame of broken bridge aluminum alloy are on the same plane, so it is not easy to accumulate water. However, due to its metallic characteristics, condensation may occur in winter.

3. Air tightness

The PVC profile of the plastic-steel window is connected by welding, and there is no gap at the joint; The broken bridge aluminum alloy window is connected by bolts, so the air tightness of plastic steel window is better than that of broken bridge aluminum alloy window.

4, thermal insulation performance

PVC profile has the best heat insulation performance among the profiles for doors and windows at present, and its heat transfer coefficient is 1/357 for steel and11250 for aluminum profile. The ratio of heat transfer coefficient of aluminum profile to PVC profile is 1.44 times, that is, the energy loss in winter and summer is 1.44 times that of plastic-steel window.

5. Lighting performance

Because the projection size of the plastic-steel window on the facade is larger than that of the broken-bridge aluminum alloy window, and the shading area of its sash member is about 10% larger than that of the broken-bridge aluminum alloy window, the lighting performance of the same size hole is about 10% worse than that of the broken-bridge aluminum alloy window.

6. Sound insulation performance

Because of the metal characteristics of aluminum alloy, its energy transmission performance is much higher than that of plastic steel window, including sound energy and heat energy, so the sound insulation effect of plastic steel window is obviously better than that of aluminum alloy window.

7, fire performance

The fireproof performance of plastic steel window is flame retardant, and the broken bridge aluminum alloy window is nonflammable, so the fireproof performance of broken bridge aluminum alloy window is better than that of plastic steel window.

8. About lightning protection and static electricity.

Aluminum alloy is a good conductor, and PVC plastic is a non-conductive insulator. When used in high-rise buildings (the first lightning protection building is more than 30M, the second lightning protection building is more than 45M, and the third lightning protection building is more than 60m), it cannot solve the problem of side lightning protection. Therefore, in order to strengthen the anti-static problem of aluminum alloy, electrostatic spraying treatment is often used.