1、 Introduction to Broken Bridge Aluminum

Broken bridge aluminum refers to the separation of cold and hot bridges. As aluminum alloy is a metal with fast thermal conductivity, it becomes a "bridge" for heat transfer when there is a significant temperature difference between indoor and outdoor environments. Broken bridge refers to the process of disconnecting the aluminum alloy from the middle and connecting it to the aluminum alloy on both sides using hard plastic. However, plastic has slow thermal conductivity, making it difficult for heat to transfer, hence the name "broken bridge aluminum alloy". The broken bridge aluminum adopts insulated aluminum profiles and insulated glass, with a European style structure, beautiful appearance, and energy-saving, sound insulation, noise prevention, dust prevention, and waterproof functions. The thermal conductivity coefficient K value of these types of doors and windows is 3W/m2; Below K, heat loss is reduced by half compared to ordinary doors and windows, heating costs are reduced by about 30%, sound insulation reaches over 30 decibels, and water and air tightness are good, both meeting the national A1 class window standard

2、 Construction methods and key points

2.1 Process flow: Snap the line to find the rules ->Handle the door and window openings ->Check the installation of connectors ->Check the door and window treatment ->Install ->Fillet around ->Hardware accessories ->Clean.

2.2 Stacking, storage, and hoisting of finished door and window frames. Before entering the site for installation, the project leader must provide a construction briefing to all members of the door and window installation team, with written briefing materials archived and installation reference lines provided.

2.3 Expansion screws should be directly inserted into the wall from the inside of the door and window frames, with a length of no less than 80mm and a spacing of no more than 500mm between adjacent expansion screws.

2.4 Joint treatment method between door and window frames and walls: Fill the gap between the frame and the wall with foaming agent. If the foaming agent overflows, use a shovel to level it, then apply cement to cover it. After the cement dries, evenly apply sealant at the interface.

3、 Technical method for installing broken bridge aluminum doors and windows glass

Before installing the glass, clean the dirt inside the cutting edge and evenly apply 1-3mm thick bottom putty along the entire length of the cutting edge.

3.2 Install glass with a long side greater than 1.5m or a short side greater than 1m, use rubber pads and fix them with pressure strips and screws.

3.3 The glass installed in the vertical frame should be placed on two identical positioning blocks, and the distance between the placement point and the vertical edge of the glass should be 1/4 of the width of the glass, and should not be less than 150mm.

3.4 The position of the positioning pad for the glass installed in the fan should be determined according to the opening direction. The width of the positioning pad should be greater than the thickness of the supported glass piece, the length should not be less than 25mm, and should meet the design requirements.

After the glass is installed in place, its edges should not come into contact with the frame, fan, and their connecting components, and the gap left should be 2-3mm.

All materials used during glass installation shall not affect the smoothness of the drainage system.

3.7 When inserting glass into frames and fans, filling materials should be used, and lines should be pressed evenly around the glass.

4、 Construction management

4.1 The planned construction period for the door and window project is ------- days, and the quality of the door and window project meets the standards.

4.2 According to the requirements of the construction period and quality commitment determined by this project, in the construction of door and window engineering, reasonable allocation of production factors shall be made to ensure the construction progress, guarantee the construction quality of the foundation engineering, and achieve the contract objectives.

4.3 During construction, it is necessary to reasonably arrange the interrelationships and construction sequence between various types of work to ensure orderly construction. Reasonably allocate and arrange labor force to meet the construction schedule requirements

4.4 Timely purchase building materials according to the construction progress and carry out on-site inspection work in accordance with regulatory requirements.

During the construction of doors and windows, strictly follow the relevant specifications to ensure the construction quality of the external wall insulation project.

4.6 Strengthen supervision and guidance during the construction process, and implement effective control over the entire process of door and window construction.

4.7 Each type of work should carry out self inspection by the team and process inspection during construction to ensure the construction quality of each process.

4.8 Timely collect, record, and organize quality assurance data in accordance with regulatory requirements, ensuring that the data is authentic, complete, standardized, and synchronized with the construction progress.

5、 Safe and Civilized Construction

5.1 The goal of safe and civilized construction for door and window engineering is to have zero safety accidents with minor injuries or above, and to maintain a clean and civilized construction site.

Before construction, all mechanical equipment must be inspected, debugged, and approved before being put into use. Implement a dedicated person responsibility system during use, and assign a dedicated person to carry out daily maintenance and upkeep work.

5.3 During construction, safety education should be provided to construction personnel and safety precautions should be explained clearly. During construction, it is necessary to strictly comply with various safety regulations and operating procedures to ensure safe construction.

5.4 Construction materials shall be stacked in an orderly manner as required, and the site shall be kept civilized and tidy.

During the installation of glass engineering, attention should be paid to the contamination of the glass. After installation, cleaning should be carried out to ensure the cleanliness of the glass. After completion, the surface of the glass engineering should be clean, without leaving any stains such as putty, slurry, paint, etc.

6、 After sales service

After the completion of the project, the company promises to provide a one-year warranty for the product

The warranty includes:·

1. There is a phenomenon of inflexibility in the opening of door and window hardware accessories.

2. The sealing strip has unevenness, groove detachment, and curled edges.

3. The drainage holes and air pressure balance holes are not unobstructed.

4. The building sealant has peeling and groove detachment phenomena.

The middle layer of the insulated glass may fog up in winter.