ã€China Aluminum Industry Network】to ensure the technical requirements of exterior doors and windows in the project design, procurement and construction process, to meet the performance requirements of wind pressure, watertightness, airtightness, insulation, sound insulation, lighting, safety, etc., to avoid The recurrence of common problems of external doors and windows projects, Ju Mei Jia Pin Xiao Bian has compiled the key points for the quality control of doors and windows, as the business guidance for the quality control of the doors and windows.
Front section: Quality requirements for exterior doors and windows
First, the airtight requirements
1, the corner seal (plastic corner):
The sealing strip should avoid corner splicing, and the sealing strip at the corner should be designed as a 90-degree integral glue angle.
2, frame fan seal:
Three sealing strips shall be designed to open the fan part, which shall be the main sealing strip, the fan blanking strip and the frame pressing edge strip.
Second, anti-seepage requirements
1. The outer window must be provided with a drainage channel, a drainage port, and a vent hole (air pressure balance hole) to discharge the water in the window frame fan. A cover should be provided outside the outlet to prevent strong winds from blowing rain and dust into the sash.
2. The insulation strip shall adopt the C-type structure, which shall be on the same horizontal surface after being compounded with the internal and external aluminum profiles, so as to avoid the leakage and corrosion risks caused by the stagnant water at the insulation strip. At the same time, the length of the insulation strip can be increased and the thermal performance can be improved.
3, the size of doors and windows openings: the structure of the opening should not be set too large to avoid sealing difficulties caused by hidden leaks.
4, Qikou: The window hole is due to special reasons, such as the exterior wall is a stone curtain wall, the hole is reserved for large size, the structure of the opening is recommended to do business mouth, and the mouth should be poured together with the concrete wall.
5. Outer window platen: The exterior wall material is a paint construction, and it is recommended to use a metal window platen. The inside of the metal window sill should be pressed into the window frame, and the outer surface of the window sill should be dripping.
6. Window frame and structure hole: The window frame should be installed in a vertical position. If it is installed on the outside, it should be retracted inward by 20mm to prevent the construction error of the structure from causing the window frame to be installed outside the structure skin, causing rainwater leakage.
Third, frame fan structure requirements
1. Group angle: The group angle is an important process related to the integrity of doors and windows.
Wiping process: Under normal circumstances should be used corner + wipe group glue process, the window angle is not allowed to squeeze the plastic extrusion.
The glue injection process: The corners of the assembly can also use the corner code + guide glue tank + glue injection hole + two-component glue injection + corner sheet technology to ensure the corner strength requirements to ensure that the door and window products are not deformed and displaced after transportation and installation. appear.
Fourth, insulation requirements
1, cavity design of profiles: profiles should use multi-cavity structure to reduce the loss of heat, while the outer window insulation components should be made up and down in order to form the overall insulation surface, eliminating cold bridges, blocking heat loss channels.
2. Insulation tape should be installed in the glass installation tank: increase the number of air chambers, reduce the heat loss between the surrounding of the insulating glass and the profile, and improve the insulation effect of the entire window.
3. The window sash should adopt the T-type heat insulation strip design: the sash heat insulation strip is designed as a T-type, and it is overlapped with the middle strip to realize the hot and cold zoning at the connection of the fan frame. It is forbidden to place the intermediate strip directly on the aluminum profile of the fan.
4. Insulation strips should be polyamide 66 (ie Polyamide 66, commonly known as nylon 66).
5, glass warm edge: double hollow glass around the cavity should be set to warm the edge, blocking the glass cavity cooling channel.
6. In regions with high requirements on heat transfer coefficient, thermal insulating materials can be added in the profile insulation chamber to meet the requirements of K values ​​according to the project positioning.
7, outside the door:
The first floor of the residential building should have a doorway to the outside swing door leading to the garden. It is forbidden to open the door and the bottom of the door is closed with a brush.
The double-leaf swinging outside door leading to the garden on the first floor of the residence shall be snapped and closed after closing, and the middle seam shall be closed with a brush.
V. Safety Technical Requirements
1. Glass clasps: The glass clasps should be installed on one side of the room. It is forbidden to turn the inner windows into outer ones so that the clasps can be installed on the outdoor side. The requirements for theft prevention, safety, and glass replacement can be ensured without leakage. .
2, the lock point: In order to improve the external window wind pressure strength and anti-theft performance, outside the window should be used to lock more points. Lock point settings should meet the requirements of hardware manufacturers design and installation manual.
3, the size of the unit entrance outside the door should not be too large, in order to ensure the reliability of hinges and other hardware accessories, to avoid safety incidents.
Part II: Quality Control Construction Requirements for Exterior Doors and Windows of Buildings
Sixth, frame construction
1. The gap between the outside of the frame and the wall should be uniform and should be controlled at 10-15mm. The fixed installation position of the attached box shall satisfy the following: The distance between the corners shall not be greater than 150mm, and the center distance between the fixed parts of the rest shall not be greater than 500mm, and the distance from the center of the fixed point and the wall rest to the edge of the wall shall not be less than 50mm.
2. Attachment to the frame: The gap between the steel sub-frame and the main structure should be filled with dry and hard cement mortar to ensure that the foam is filled and dense. Outside "alpha angle (character)". Brush 1.2 thick waterproof coating.
Seven, the main frame fan installation and construction
The main frame and the sash are processed and assembled in the factory, which can improve the processing precision, thereby enhancing the airtightness and watertightness of the entire window.
1, after the completion of the mouth, according to the design drawings check the check window specifications, model open form, opening direction, mounting hole position and combination of accessories, etc., if found to have deformation is strictly prohibited on the wall.
2. Use a regular gasket to ensure that the gap between the aluminum alloy window frame and the steel sub frame is ≤ 10, and make the peripheral clearance uniform.
3. Check the perpendicularity and level diagonal of the positive side of the aluminum alloy window frame, and submit the inspection and assessment in time after passing the inspection.
4, the main box to clean up and play frame glue
4.1. According to the regulations, use the neutral silicone thick sealant of the specified color to clean the wall and door and window joints with a brush and dry cloth within 10mm, apply a masking paper, apply glue, and wipe it with your hand or tool. Under the textured paper, make partial adjustments.
4.2. Note: When the outer wall is a paint finish, the outer frame adhesive should be bonded to the base layer of the paint; when the outer wall finish is a stone, wall or aluminum plate material, the outer wall finish material cannot be top dead with the window frame, easy to pre Leave a 2-3mm gap and make a window frame glue.
Eight, glass installation
1. Glass installation should meet the following requirements:
1.1 The glass must not be in direct contact with the glass tank, and should be on the four sides of the glass mat with different thickness pads.
1.2 Mount the glass in the frame fan and fix it with a metal buckle.
1.3 At the two ends of the aluminum alloy window strip 90° (or 45°) splicing, the installation must be flat and uniform.
2, the glass is fixed by double-sided plastic, should be buckle, the outer frame of the plastic surface, glass surface wipe with a dry cloth and then hit the rubber, glue after standing for 48 hours.
3, using finished products
The glue angle is first installed, and the length of the glue strip is 2 to 3 mm longer than the actual length to prevent shrinkage of the strip after aging. Special glue is used to glue the glue corner and the glue stick together; it is forbidden to select the way of cutting the glue strip to a 45 degree angle (without breaking).
Nine, hardware installation
1. The transmission part should be installed in the factory.
2. Hardware and accessories: Install the drive handle lock; install the swing door lock; the key should be marked according to the serial number after installation.
3, operating standards and inspection methods: fixed firmly; switch flexible; correct location.
Tenth, finished product protection
1. When the product is shipped from the factory, the surface of the aluminum material should be covered with a protective film, and the frame fan should be covered with a protective tape.
2. When the aluminum alloy door and window frame fan is installed, the original packing paper is dismantled. Once the installation is fixed, the protective cover shall be installed in the lower part of the door in a timely manner (can play a role in resisting smashing and impact, and the material project is self-determined), The main frame of the alloy and the sash frame are protected with a protective tape to prevent the corrosion of the sputtered mortar and the pollution of outdoor rain and dirt.
3. Remove the original protective buckle cover and protective tape before installing the glass. After the glass is installed, the glass shall be protected by the film. If the external facade also involves the welding construction, the outside of the glass shall be coated with water-soluble white paint.
4. Aluminum alloy doors (push and pull, open inside and outside), door leaf installation should be arranged in the later construction, during the construction process, the lower door must be hard protection, to prevent the deformation of the lower door during construction.
5, aluminum alloy coating protective layer time should not be too long, the general summer is 3 months, winter is 6 months (or based on product performance), more than this period should replace the protective film.
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