Manner thickness: aluminum sliding door window has 70 series, 90 series two kinds, the aluminum sliding door inside the house with 70 series can.The number of aluminum alloy series represents the number of millimeters of the thickness of the frame structure.Common aluminium alloy push-pull window has 55 series, 60 series, 70 series, 90 series 4 kinds.Selection should be based on the size of the window hole and local wind pressure value, used as a closed balcony of aluminum alloy push-pull window should not be less than 70 series.
Strength: The tensile strength shall be 157 Newtons per square millimeter, and the yield strength shall be 108 newtons per square millimeter.When the choose and buy, can bend profile moderately, after letting go, should be able to restore original state.
3. Color of the same aluminum alloy profile should be the same. If the color difference is obvious, the purchase should not be made.
Flatness: Check the surface of aluminum profiles, there should be no depression or drum.
Gloss: Avoid aluminum alloy doors and Windows to choose and buy profiles with obvious defects such as open bubbles (white point) and ash (black point), cracks, burr.
Pictures of oxidation: oxidation film thickness should reach 10 microns.When the choose and buy is in profile surface lightly delimit, see whether the oxidation film of its surface can erase.
Main properties of 6061 6063 aluminum profile for door and window:
1. Sound insulation performance
According to data make clear, the sound insulation performance of model steel door window is superior to aluminium alloy door window greatly.For example: the building that achieves requirement of same noise, the distance of the building that installs aluminium alloy door window and traffic trunk road needs to be in 50 meters beyond, if use window of model steel door, can shorten to 16 meters less than.
2. Heat insulation performance
When it comes to thermal insulation performance, we need to compare the basic technical parameters of the material. For example, the thermal conductivity of PVC material is 0.14, while that of aluminum alloy is 175.In other words,
Under the same conditions, in terms of material thermal conductivity, aluminum is 1250 times that of PVC.Of course, if PVC doors and Windows, energy consumption comparison, it is difficult to generalize.Because indoor dissipate heat, normally with roofing, ground, wall and door window concern.But scientific research data makes clear, regard ordinary residence as, open air conditioning likewise, the room that installs window of model steel door compares the room that installs aluminium alloy door window to save electricity to want to exceed 5 degrees every day.
3. Corrosion resistance
Plastic steel doors and Windows can withstand the corrosion of acid alkali and other chemicals, so not afraid of urban environmental pollution, hydrochloric acid and acid rain erosion.But the aluminum alloy is otherwise, after encountering the corrosion easy to cause the surface oxidation, shortens the service life
