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铝板幕墙材料选择要注意什么?

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建筑幕墙面层资料如铝单板、铝塑板、蜂窝板等,宜依据规划运用年限确定。
Architectural curtain wall surface information such as aluminum veneer, aluminum-plastic board, honeycomb board, etc., should be determined according to the planning service life.
①运用年限在十年内时宜选用铝塑板,原因是现在的铝塑板良莠不齐,滥竽充数,加之考虑施工时需现场加工,表里外表的铝箔只要0.5mm许多厂家的铝塑板是选用辊涂工艺进行外表处理的,外表有必定的纹路,因而规划人员在进行资料运用率优化时要留意不可将板面反正乱放,影响作用依照标准要求,铝塑板的边部需加强,可选用铝方管或角铝等固定,粘接胶宜选用中性硅酮结构胶当铝塑板装置部位在建筑物的防火区间或靠近该区时,应选用防火型铝塑板当铝塑板规划尺度较大时,需进行加强肋的结构计算以确定肋的标准和分布距离固定铝塑板和龙骨的耳板多选用角铝,角铝的长度不宜小于50mm,角铝在龙骨一边上宜开长孔,保证板面的热胀冷缩。规划人员还需留意不要在易破坏部位运用铝塑板,否则需在背面做加固处理。
(1) Aluminum-plastic sheets should be selected within ten years because of the uneven quality and excessive filling of the existing aluminum-plastic sheets and the need for on-site processing when considering the construction. As long as the outer surface of the aluminum foil is 0.5mm, many manufacturers use roll coating technology to deal with the outer surface, and the appearance has certain lines, so the planners are in progress. When optimizing the utilization rate of data, we should pay attention not to put the board face in disorder. The influence effect should be strengthened according to the standard requirements. Aluminum square tube or angle aluminium should be used to fix the edge of the board. Neutral silicone structural adhesive should be used when the aluminum-plastic board device is located in or near the fire-proof zone of the building, and fire-proof type should be chosen. When the planning scale of aluminium-plastic sheet is large, it is necessary to calculate the structure of reinforcing ribs to determine the standard and distribution distance of ribs. The ear plates of fixed aluminium-plastic sheet and keel are mostly made of angular aluminium. The length of angular aluminium should not be less than 50 mm. The long holes of angular aluminium should be opened on the side of keel to ensure the thermal expansion and cold contraction of the board surface. Planners also need to be careful not to use aluminium-plastic sheets in vulnerable areas, otherwise they need to do reinforcement treatment on the back.
②运用年限在十年以上时宜选用铝单板。铝单板强度好,耐腐蚀性强,在工厂加工能保证质量。由于施工现场所要铝单板是在工厂加工成制品,直接装置即可,所以规划人员在做铝单板加工图时需注明铝单板的原料、厚度、固定耳板标准和加工尺度及分布距离、加工误差要求、加强肋的标准和分布距离等。

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(2) Aluminum veneer should be selected when the service life is more than ten years. Aluminum veneer has good strength and corrosion resistance. It can guarantee quality in factory processing. Because the aluminium veneer needed in the construction site is processed into products in the factory and can be directly installed, the planners need to indicate the raw materials, thickness, standard of fixed ear plate and processing scale and distribution distance, processing error requirements, standard and distribution distance of strengthening rib when making the processing drawing of aluminium veneer.
需要留意的是耳板靠近龙骨一侧的固定孔的加工尺度要考虑热胀冷缩,一般在耳板上开长圆孔,固定螺钉时要尽量将螺钉固定在长圆孔的中部,这样即方便装置又可有伸缩性,一起要留意板四周的耳板要错位固定,否则在装置时可能“打架”铝单板外表宜选用氟碳喷涂(氟碳树脂的各项性能都较其他处理方法优胜),尽量避免选用辊涂方法(有的加工厂的辊涂产品有方向性,影响外观作用)。现在有许多建筑选用穿孔铝单板以丰厚作用,如果穿孔铝单板后边没有防水隔离层,那就可在实体墙外外表做防水层或作双层幕墙或直接在穿孔铝单板背面做防水隔离层,然后再规划穿孔铝单板。铝单板的孔洞尺度必须大于板厚(工艺要求),孔距离及尺度要依据原料的强度要求(纯铝单板较合金铝单板强度低),一起考虑加强肋的装置,避免影响外视作用。合理的规划是先做样板,通过远观和近看确定孔尺度及距离。
It should be noted that the processing scale of the fixed holes near the keel side of the ear plate should consider thermal expansion and contraction. Generally, the round holes are opened on the ear plate. When fixing the screw, the screw should be fixed in the middle of the long round holes as far as possible, so that the device is convenient and flexible. Together, we should pay attention to the dislocation of the ear plate around the plate, otherwise, the device will be fixed in dislocation. When fighting, fluorocarbon spraying should be used for the appearance of aluminium veneer (the performance of fluorocarbon resin is better than other treatment methods), and roll coating method should be avoided as far as possible (roll coating products of some processing plants have directionality, which affects the appearance). Now many buildings choose perforated aluminium veneers to play a rich role. If there is no waterproof isolation layer behind perforated aluminium veneers, it can be used as waterproof layer outside the solid wall, double curtain wall or waterproof isolation layer directly on the back of perforated aluminium veneers, and then plan perforated aluminium veneers. The hole size of aluminum veneer must be larger than the thickness of the plate (process requirements). The hole distance and size should be based on the strength requirements of raw materials (pure aluminum veneer is lower than alloy aluminum veneer). The device of strengthening ribs should be considered together to avoid affecting the external effect. Reasonable planning is to make a model first, and determine the hole size and distance through the long-term and near-term view.
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