Principles to be followed when maintaining aluminum-magnesium-manganese-aluminum plate on roof

When installing aluminum-magnesium-manganese aluminum sheet on the roof, if there are slight scratches on the surface, don't worry, the aluminum-magnesium-manganese sheet will repair itself and rebuild a new passivation layer. If there are deep or large scratches, you should consider replacing them.

Protective film: In order to prevent scratches during transportation and installation, the manufacturer of Al-Mg-Mn plate coated a protective film on the surface of the product. Remove the protective film as soon as possible after installation. After installation, it is recommended to remove the protective film within 6 months.

Oil level and dust: If there is a small amount of oil and dust accumulated on the surface of Al-Mg-Mn roof panel during installation, it can be wiped gently with a clean dry cloth, and it is not allowed to rub hard or use cleaning products. Rain can naturally wash away dust.

Fingerprint removal: When Al-Mg-Mn plate is applied to curtain wall, attention must be paid to the fingerprint problem. A better removal method is to use mineral oil. Wearing cotton gloves during installation can prevent fingerprints.

Roll material should be kept in its original state. If you need to overlap due to lack of space, you can follow the following principles:

(a) coil placed according to the horizontal axis, should be stored separately, shall not be piled up.

(2) If the rollers are installed longitudinally, wooden frames can be stacked. In order to ensure stability and safety, there are many Al-Mg-Mn aluminum plates that can be folded into five layers.

(3) The storage time of plates and coils should be as short as possible, especially in the construction site.

To ensure product quality, please strictly follow the following storage suggestions:

(a) aluminum, magnesium, manganese plate or roll must be stored in a ventilated, dry, cool, constant temperature place, and take shielding measures to prevent condensation.

(2) The board and coil must be separated from the ground with a wooden frame to form sufficient air circulation space.

(3) In order to ensure that the materials are not deformed, all plates must be placed on the shelf.

(4) When transporting aluminum, magnesium, manganese and aluminum plates, they can be arranged horizontally or vertically according to customer requirements.

What are the unknown characteristics of Al-Mg-Mn-Al plate?

As a widely used metal roofing material, aluminum magnesium manganese aluminum plate has the following main characteristics:

1. Aesthetics: From the appearance, the built-in Al-Mg-Mn plate with low vertical edge is more beautiful than that with high vertical edge.

2. Water resistance: In terms of water resistance, the Al-Mg-Mn plate with high vertical edge has more momentum, which depends on the height of ribs. The harder it is for plates with high vertical edges to penetrate rain.

Usability: Under normal circumstances, they are used for roofs. However, in the absence of specific requirements, Al-Mg-Mn roofs with lower vertical edges are more used in private villas, while Al-Mg-Mn slabs with higher vertical edges are more used in stadiums and other venues.

Fourth, the service life is long.

In recent years, the aluminum wallboard used for building exterior walls is generally coated with fluorocarbon resin, which generally has strong adhesion, aging resistance and weather resistance and can be used for 20 years.

At present, many manufacturers in China use fluorocarbon resin KYNAR-500 for production, and the performance of coating paint is generally higher than that of cold coating. For the inner layer, aluminum wallboard with polyurethane, polyester and other coatings can be used. Under normal circumstances, the appearance of Al-Mg-Mn aluminum plate can withstand long-term wind and sun exposure without discoloration, and the influence of natural wear is relatively small. Therefore, in the specific construction, all construction units should pay enough attention to it.

5. The density is 2.7, the melting point is 658, the linear expansion coefficient is 0.0000023 at 20 ~ 100℃, the cracking load coefficient is 8 ~ 12kg/mm2 (depending on the hardness of the material), the elongation is 10 ~ 40%, and the thickness is 0.7～1.2mm. When aluminum corrugated plate is used, the thickness can be reduced to 0.6 mm. Besides crimping and riveting, welding methods can also be selected.

6. Economy: In terms of price, the Al-Mg-Mn aluminum plate with high vertical edge is more expensive than the Mg-Mg-Mn aluminum plate with low vertical edge, which is mainly due to its different feed width.

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