Several point for attention in that design of Al-Mg-Mn aluminum plate

Curtain wall, a modern and novel external maintenance structure, is widely used by architects and owners with its rich and varied external decorative effects and expressive features. Al-Mg-Mn aluminum curtain wall, as one of many curtain walls, has only appeared and been applied in China in recent years. The appearance of this aluminum plate enriches the artistic expression of curtain wall and improves its performance. It is widely used in buildings with the advantages of light weight, good seismic performance, convenient processing, quick installation, rich colors, strong decorative expression and convenient cleaning and maintenance.

Next, let's understand some problems that should be paid attention to when designing the aluminum curtain wall:

A, aluminum magnesium manganese plate external decorative surface treatment:

It is an important part of the design and manufacture of Al-Mg-Mn panel curtain wall to correctly and reasonably select the finishing treatment method of Al-Mg-Mn panel. Fluorine-carbon paint spraying is a good weatherproof finish for building exterior walls. It is a coating with polyvinylidene fluoride as the main matrix. Fluorine-carbon is one of the known strong molecular bonds, which makes polyvinylidene fluoride have quite strong heat resistance, chemical resistance and ultraviolet resistance; In addition, the combination of fluorine-carbon bond and carbon-hydrogen bond produces unique polarity, which makes the material have outstanding anti-fouling and anti-environmental aging ability.

Fluorine-carbon sprayed decorative layer is tough and abrasion-resistant, with smooth surface, good weather resistance, air pollution resistance, fouling resistance and ultraviolet resistance. It has rich and colorful colors and can keep the colors fresh for a long time.

2. Thermal expansion and cold contraction of Al-Mg-Mn plate:

The design of aluminum magnesium manganese aluminum curtain wall should always consider the thermal expansion and cold contraction of aluminum magnesium manganese plate, and design it as simple as possible to avoid designing it as fixed on four sides. Because simply supported on four sides can fully absorb the thermal expansion of Al-Mg-Mn plate and prevent the bulging of the plate surface from affecting the external room effect of the curtain wall.

Discussion on construction process of aluminum magnesium manganese aluminum plate in detail

A, measuring unreeling:

Setting measuring points on the ground, using theodolite to measure the structural axis, and then taking this axis as the baseline, combining with the layout drawing of aluminum magnesium manganese aluminum plate, curtain wall structure construction drawing, steel structure construction drawing, etc., measuring the installation control line of aluminum magnesium manganese wall panel to both sides respectively.

Using level and theodolite to measure the installation baseline of the first row of plates on the installed steel truss, and based on this line, every two plates are set apart, and the whole installation control network is measured and released at the installation position of the wall.

Second, aluminum magnesium manganese wall plate lifting:

The wall skeleton has been installed in the early stage. When installing the Al-Mg-Mn wall panel, the horizontal control line that has been measured and laid out shall be fixed by pulling wires, so as to ensure that the bottom edge of the panel is at a unified elevation position. Eight groups of lifting points are set on the steel truss, and they are hoisted and installed from bottom to top.

Three, aluminum magnesium manganese wall panel fixed connection:

After the aluminum-magnesium-manganese aluminum plate to be installed is hoisted to the installation position, it is fixedly connected by tapping screws and fixed on the square steel pipe. The installation of other plates shall be carried out in turn, and after the installation of the integral wallboard is completed, the installation of roof plates shall be carried out. After the first Al-Mg-Mn wall panel is fixed in place, a continuous datum line is drawn at the end and top of the panel respectively, and the two lines and the first panel will become the guide line, which is convenient for the rapid fixation of the subsequent Al-Mg-Mn wall panel.

5-6 pieces of Al-Mg-Mn wallboard shall be inspected in sections after installation. The method is to measure the top and bottom of the fixed Al-Mg-Mn wallboard once to ensure that there is no deviation.

Install to the next pay-off mark point, recheck the installation deviation of the plate, and fasten the plate as a whole according to the design requirements. If it can't meet the requirements, it should be adjusted in this sign section in time, and then it should be fastened as a whole.

Four, convergent and edge sealing fixed:

When the Al-Mg-Mn wall panel is completely installed, the edges of the remaining panels near the roof and shaft are closed, and the closed edges are made of aluminum veneer with a thickness of 3 mm. The wall composite panel is connected and fixed with the installed roof system panel by tapping screws, and the end is fixedly connected with the vertical locking edge of the roof by tapping screws of 5.5mm*25m*305m, and then sealed with adhesive, and connected with the wall composite panel by flat head screws with a distance of 1000m m..

Five, after the completion of the installation of retest:

After the installation of Al-Mg-Mn aluminum plate is completed, it is necessary to retest the installation elevation, position and angle of plate installation, and check whether the angle of steel truss meets the requirements in advance before installation. If it does not meet the requirements, it needs to be handled in advance.

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