Process of aluminum veneer curtain wall

1. material requirements:

1、材质：Aluminum veneerThe material selection shall comply with the provisions of GB/T5237 Aluminum Alloy Building Profiles, and the commonly used material type is 3003H24; the thickness of aluminum veneer to be used in this project is 3mm.

2, coating: fluorocarbon paint coating, coating times shall not be less than two, the thickness should be greater than 25μm; and fluorocarbon resin content should not be less than 75%; fluorocarbon coating should be free of blisters, cracks, peeling and other phenomena.

3. Processing, storage and handling: The stiffening ribs and connecting parts of aluminum veneer can be welded and riveted, and the positions should be accurate and firm. The surface layer of aluminum veneer shall be pasted with a polyethylene plastic protective film with a thickness of not less than 0.3mm, and the inner and outer surfaces of aluminum veneer shall not be scratched.

4. Allowable deviation of aluminum veneer processing size: unit (mm)

Main machines and tools of the 2:

1. Tools: electric welding machine, cutting saw, electric drill, rivet gun, barrel glue gun, portable air pressure cleaning machine, pulley, brown rope, nylon rope, screwdriver, tool knife, plaster knife, etc.

2. Measurement, setting-out and inspection: level, theodolite, total station, steel tape, level ruler, steel wire, etc.

Main construction process of 3.

1. Process flow:

Measuring and setting out → installation and verification of connecting piece → installation of purlin and steel frame → installation of metal plate → cleaning and caulking of plate → glue injection and sealing → surface cleaning

2. Technical points:

A, according to the design to determine the grid. Determine the datum line according to the grid scheme and set out the line.

b、按设计位置下连接件，连接件采用L50*50*5镀锌角码，M5镀锌螺栓固定。

c、钢骨架的安装：主框采用80*60*3镀锌方钢管，确定基准面测量误差，调整横向、竖向、间距误差，焊接框架，焊接要牢固焊缝饱满，焊缝应打磨平整光滑；与连接件连接要牢固。

d. Installation of aluminum veneer-insulation sandwich panel:

1. The assembly size of aluminum veneer-insulation sandwich panel shall meet the installation requirements. The size between aluminum veneer and galvanized sheet must be consistent. The surface of the panel shall be flat and free from depression and bulging.

2, aluminum veneer-insulation sandwich panel connection angle code with rivets fixed, should be fixed firmly, the position is correct.

3 plate installation: first, the plate shall be initially installed, the plate shall be placed in the corresponding installation position, the angle code shall be leveled, and the plate shall be temporarily fixed, and then the plate shall be adjusted. the adjustment standard shall reach the horizontal and vertical joints and be on the same plane. After the adjustment should be fixed immediately.

E, injection of weather-resistant sealant

1 Filling glue joint: the glue joint is filled with foaming agent that is moisture-proof, waterproof, heat-resistant and flame-retardant, and the foam strip with appropriate specifications and qualified quality is selected to be inserted into the joint to be filled with glue, so as to maintain sufficient friction between the foam strip and the side of the plate. After filling, the foam strip is about 5mm from the surface of the plate.

2 Clean the glue seam: clean the glue seam with a clean cloth and xylene half an hour before the glue injection, and inject the filler. The glue joint should be injected as soon as possible within half an hour of cleaning, and should be cleaned again after overtime.

3 Scraping glue: Scraping glue should be scraped in the same direction, and the curing time of the sealant should be paid attention.

f. Clean finishing

Aluminum veneer in the final process to open the protective film, if there has been pollution, the application of neutral solvent cleaning, wash with water.

3. Quality requirements:

A. the overall surface is smooth, clean and consistent in color; There shall be no obvious depression within 5 ㎡; The installation is firm and the glue joint is tight;

B. The plate joints shall be straight and on the same horizontal/vertical line;

c. The angle misalignment of adjacent plates shall not be greater than 1mm;

d. The width of the plate seam is consistent, and the error is not more than 3mm;

e. The height difference of adjacent plate joints shall not be greater than 1mm;