What are the advantages of Al-Mg-Mn-Al ribbed reinforcement system?
In this chapter, we talk about a ribbed reinforcement system of aluminum-magnesium-manganese aluminum plate, which is connected by edge-locking joints. The reinforcement measures of this system are to apply wind clips on the supports of aluminum-magnesium-manganese roof panels. Compared with the traditional technology, it has the following obvious advantages:
Firstly, the plate-rib reinforcement system has stronger bearing capacity against wind exposure than the traditional wind clip reinforcement measures.
The traditional wind clips only strengthen the edge-locking joints of the aluminum-magnesium-manganese roof panel, and cannot provide greater out-of-plane stiffness for the flat web area of the aluminum-magnesium-manganese roof panel. While the plate-rib reinforcement system can strengthen the edge-locking joints, it can provide the out-of-plane stiffness for the flat web area of the aluminum-magnesium-manganese roof panel under wind-absorbing load by setting the reinforcements or stiffeners above its own flat web position, thus reducing the deformation of the edge-locking joint roof panel and enhancing the wind-resisting capacity of the aluminum-magnesium-manganese roof panel.
Secondly, the plate-rib reinforcement system is more flexible in layout than the traditional wind clip reinforcement measures.
Most of the traditional wind clips can only be applied at the fixed bearing position, but the strengthening effect is greatly weakened when applied at the non-bearing position, while the plate-rib strengthening system can be applied at the fixed bearing position or at the non-bearing position, which can achieve a better effect of strengthening the wind-proof bearing capacity of aluminum magnesium manganese aluminum plate.
Thirdly, the plate-rib reinforcement system has better deformation release ability than the traditional wind clip reinforcement measures.
The application of traditional wind clips will weaken the longitudinal expansion and deformation ability of the aluminum-magnesium-manganese roof panel at the support more or less, while the plate-rib reinforcement system has ring locks with similar shapes to the two ends of the aluminum-magnesium-manganese roof panel, which will not affect the longitudinal expansion and deformation ability of the aluminum-magnesium-manganese roof panel.
Fourthly, compared with the traditional wind-catching clip reinforcement measures, the plate-rib reinforcement system has the advantages of maintaining the inherent architectural function of the aluminum-magnesium-manganese roof, not destroying the architectural function of the aluminum-magnesium-manganese roof, and avoiding the influence of the wind-catching clip on the architectural function.
Fifthly, the simpler the plate-rib reinforcement system is, the simpler the construction method is.
The Al-Mg-Mn-Al ribbed reinforcement system is convenient to process, and the whole on-site construction process can be completed by manual fixture during construction, with simple installation and short construction period.
Preparation technology and advantages of polyurethane aluminum magnesium manganese aluminum plate
It is reported that Al-Mg-Mn-Al plate is usually used in combination with polyurethane. The outer plate made of this material can greatly improve the service life of wall panels and roof panels, and solve the problem that ordinary roof panels are prone to rust. Al-Mg-Mn sheets are widely used in building walls or roofs alone, but there is no complete bonding technology to form composite products with polyurethane foam products, which can not achieve the effects of heat insulation, flame retardant and sound insulation, and the deformation resistance of polyurethane foam products is not good.
In this regard, the R&D personnel proposed a polyurethane aluminum magnesium manganese roof panel and its preparation process. The closed-cell structure of polyurethane in the roof panel prevents it from swelling due to water absorption. Combined with the partition effect of Al-Mg-Mn plate on water, the material has the characteristics of moisture-proof and waterproof, and the composite plate has good stability.
The preparation process of the polyurethane aluminum magnesium manganese aluminum plate comprises the following steps:
The upper and lower layers of Al-Mg-Mn plates are pressed and molded by a molding machine, and the lower layer of Al-Mg-Mn plates are sprayed with glue. The foaming slurry is evenly poured between the upper and lower Al-Mg-Mn plates by a high-pressure foaming machine, and then pressed and molded by a double-track molding machine, and the finished product is obtained by cutting.
The material of Al-Mg-Mn is quite soft, and pressing is quite difficult. When making Al-Mg-Mn roof panels, not only the difficulty of polyurethane foam filling is solved, but also the pressing problem of Al-Mg-Mn plate. The pressing problem of Al-Mg-Mn plate is solved by adjusting the gap between the forming wheels of the pressing machine. The adjustment method is the unified overall base of the upper and lower wheels, and the upper and lower gap values are 0.44 mm.
In the process of product production, the glue dripping form of the lower aluminum plate was changed into the glue spraying form, and the glue output of the adhesive nozzle was adjusted to increase the glue output by 5%. Because the nozzle is in the way of glue dripping and even glue, the reaction area and reaction time of polyurethane raw materials and glue are increased, which makes the reaction bonding of polyurethane raw materials and glue longer and increases the bonding reliability.
The polyurethane aluminum magnesium manganese aluminum plate has the advantages that:
(1) The closed-cell structure of the composite aluminum plate prevents the composite aluminum plate from swelling due to water absorption, and combines the barrier effect of the surface material on water, so that the composite aluminum plate has the characteristics of moisture resistance and water resistance, and the stability of the composite aluminum plate is good, with the dimension deformation in the length direction ≤0.05%, the dimension deformation in the width direction ≤0.05% and the dimension deformation in the thickness direction ≤0.06% at -30℃; At +80℃, the dimensional deformation in the length direction is ≤0.9%, the dimensional deformation in the width direction is ≤0.6%, and the dimensional deformation in the thickness direction is ≤ 0.1%.
(2) The preparation method of the composite aluminum-magnesium-manganese aluminum plate is simple and convenient to operate, realizes industrialized continuous production, improves production efficiency, and has the advantages of heat insulation, fire prevention, corrosion resistance, flame retardancy and sound insulation, environmental protection, long service life and convenient installation.
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