Installation method and quality inspection of aluminum alloy doors and windows
Aluminum alloy doors, windows and curtain walls are a new type of building exterior wall that has been developed in China’s aluminum alloy industry for 30 years. In this building form, new technologies, new materials and new structures are applied, and it is also the most used exterior wall for large buildings today. One of the structures. With the development of society and the promotion of environmental protection and energy saving concepts, the installation method and quality inspection of aluminum alloy doors and windows also require great attention.
The basic method of aluminum alloy doors and windows installation
In accordance with the "Code for Construction and Acceptance of Building Decoration Engineering". The aluminum alloy doors and windows are installed horizontally and vertically into the opening. The gap between the outer frame and the wall should be filled in according to the design requirements. If there is no requirement for installation, mineral wool strips or glass wool felt strips should be used to fill in the gaps. Leave a 5mm-8mm deep groove on the outside for filling and inserting the sealing material. At present, most of the installation of aluminum alloy doors and windows adopts the post-plugging process, that is, after the wall door and window openings are bricked or concrete is poured, the doors and windows are stuffed into the openings. Most of the connectors are made of galvanized iron. The connectors and the window frame are connected by self-tapping screws, blind aluminum rivets, etc., and the connectors and the wall are connected by nails, plastic expansion bolts, and metal expansion anchor bolts. The sealing process is divided into two types: flexible T art and rigid process. The flexible process is to fill in light materials such as mineral wool or glass wool felt strips in layers, leave 5mm-8mm deep notches at the edges, and seal with sealant. The rigid process is to seal with 1:2 cement mortar, and the mortar is in contact with the frame. The surface is coated with anti-corrosion layer to avoid cement corroding the aluminum frame and shortening the service life. The window sill facing material must extend into the bottom sill of the aluminum frame, in a circular arc transition of R≥100Inrn, to avoid the trapped frame diving and the hidden danger of water seepage. Finally, clean dirt, rust and other debris, and install door and window sashes.
Aluminum alloy doors and windows installation quality inspection
The installation of aluminum alloy doors and windows must be assembled according to the design drawings and ingredients, and should be carried out after the indoor and outdoor walls are painted. A reasonable gap should be maintained between the frame and the adjusting mouth wall. When the wall of the cave is made of ordinary cement mortar powder surface, |. The daily J gap is 20mm～25Inm. When the wall facing of the hole is brick or mosaic, the gap is 25mm～30mm, and the sealing gap is 5mm～8mm. After setting up the frame, check its verticality, flatness, levelness, and correct diagonals, and then temporarily fix it with a pair of wooden wedges. The wooden wedges are placed at the four corners to prevent deformation and misalignment caused by improper force. To install the combo box, you should first try to assemble, and then install the full-length assembly material-section assembly material-basic torch. Reinforcement materials should be treated with anti-rust, and the connecting parts should be galvanized screws. The open screw inspection connection is buried with sealant of the same color as the doors and windows to prevent the color difference from significantly affecting the appearance.
The fixing method of aluminum alloy door and window frame should be determined according to the specific situation. The wall of the cave is a concrete structure, which is fastened by nailing technology; the wall of the cave is a masonry structure, which can be connected and fastened by expansion screws with percussion drills. The distance between the fasteners of the connecting frame and the edge of the wall (beam or column) shall not be less than 50mm, and the gaps in the wall shall be avoided to prevent the fastening failure.
After sealing the seam, it should be cleaned with a soft cloth dampened with water, and metal tools should not be used to wipe it hard.
The main problems existing in the installation of aluminum alloy doors and windows
(1) The reserved size of door and window opening is not allowed
During the construction of the high-body structure, the reserved opening is too large or too small due to the inaccurate reservation of the opening or the decoration surface method when the reservation is not considered. Disadvantages such as offset. The opening of the opening is too large, which brings accuracy to the installation of the iron feet and the filling of the gap. The opening of the opening is too small, and the door and window frames cannot be embedded; the vertical position of the opening during the construction is the highest, and the horizontal elevation offset is too large, which not only brings about the installation Difficulties also affect the quality of facade perception.
(2) Aluminum alloy doors and windows are loose and not firmly fixed
The main reason for the loosening of aluminum alloy doors and windows is that the number of connectors is insufficient or the position is small. Regulations. The distance between aluminum alloy doors and windows should be greater than 600mm, and the distance from the frame corner should not be greater than 180mm. However, in actual construction, blind and brutal construction, one-sided pursuit of cost reduction, some 1.2m high windows only have two connectors, causing the doors and windows to loosen. At the same time, the connection piece is too small is also one of the reasons for the loosening of doors and windows. Individual manufacturers use less than 1mE iron sheet as the connector, and fix the connector with screws, which seriously violated the regulations of the connector. Easy to look outside, after the aluminum alloy door and window connectors are fixed, the joint between the frame and the wall is not filled tightly, and the pavilion is not filled at all. The local displacement causes the loosening of the entire frame, and also brings the hidden danger of water seepage at the edge of the frame. In addition, the galvanic corrosion phenomenon is not considered when installing aluminum alloy doors and windows, so that the aluminum alloy doors and windows are in the most dangerous state of galvanic corrosion with large cathodes and small anodes. After the screws are corroded, the doors and windows and the wall are in a disconnected state, which is prone to fall and injury accidents.
(3) Protection of finished aluminum doors and windows
Aluminum alloy doors and windows are high-end doors and windows products, in addition to having door and window functions, they also have a certain decorative effect. There is a protective oxide film on the surface, which should be strictly protected during construction. Do not touch, scratch or contaminate the surface, otherwise it will affect the look and feel and use function.
When installing doors and windows, you can first erect the door frame and then do the stern corner protection. The anchor alloy should be properly protected, and the protective tape or film should not be torn off at will. It is strictly forbidden to hang heavy objects (such as scaffolding boards, ash buckets, etc.) on aluminum alloy doors and windows. Once contaminated, clean the surface with a soft cloth, oil and water immediately, and spray paint on the parts with severely stained surfaces and more scratches. As a consumer, it is better to choose a company with production qualification and reputable when buying.