风管加工过程中应注意的问题
Problems needing attention in the process of air duct processing
风管不得采用S型插条、C型直角插条及立联合角插条的连接方式。空气洁净等级为1～5级的风管不得采用按扣式咬口。
Air ducts shall not be connected by S-type, C-type right-angle and vertical joint-angle inserts. No button bite shall be used for air ducts with air cleanliness grades of 1-5.
净化空调系统风管的法兰铆钉间距应小于100 mm，空气洁净等级为1～5的风管法兰铆钉间距应小于65mm。
The flange rivet spacing of air duct in purified air conditioning system should be less than 100 mm, and that of air duct flange rivet spacing of air cleanliness grade 1-5 should be less than 65 mm.
风管内不得设置加固框或加固筋。
Reinforcement frames or reinforcement bars shall not be installed in air ducts.
风管加工前应采用清洗液去除板材表面油污及积尘，清洗液应采用对板材表面无损害、干燥后不产生粉尘，且对人体无危害的中性清洁剂。
Before air duct processing, cleaning fluid should be used to remove oil and dust on the surface of sheet metal. Cleaning fluid should be neutral detergent which is harmless to the surface of sheet metal, does not produce dust after drying, and does not harm to human body.
通风管道制作完毕应使用清洗液清洗，清洗后经白绸布擦拭检查达到要求后，酚醛板，应及时封口。
Ventilation pipes should be cleaned with cleaning fluid after production. After cleaning, the phenolic board should be sealed in time after the requirements are met by the white silk cloth wiping inspection.
彩色涂层钢板风管的内壁应光滑;板材加工时不得损坏涂层，被损坏的部位应涂环氧树脂。
The inner wall of the air duct of the color coated steel plate shall be smooth; the coatings shall not be damaged during the processing of the plate, and the damaged parts shall be coated with epoxy resin.
风管的咬口缝、铆接缝以及法兰翻边四角缝隙处，应按设计及洁净等级要求，采用涂密封胶或其他密封措施堵严。密封材料宜采用异丁基橡胶、氯丁橡胶、变性硅胶等为基材的材料。风管板材连接缝的密封面应设在风管壁的正压侧。
The bite seam, rivet seam and flange flange flange flange corner seam should be sealed with sealant or other sealing measures according to the requirements of design and cleanliness grade. Isobutyl rubber, chloroprene rubber and modified silica gel are suitable for sealing materials. The sealing surface of the connecting joint of the air pipe sheet should be located at the positive pressure side of the air pipe wall.
风管制作场所应相对封闭，制作场地宜铺设不易产生灰尘的软性材料
Ventilation control workplaces should be relatively closed, and production sites should be laid with soft materials which are not easy to produce dust.
风管应减少纵向接缝，玻璃钢通风管道，且不得有横向接缝。
The air duct should reduce the longitudinal joints and the FRP ventilation duct, and there should be no transverse joints.
风管加工连接螺栓、螺母、垫圈和铆钉应采用镀锌或其他防腐措施，不得使用抽芯铆钉。
Galvanizing or other anti-corrosion measures shall be adopted for connecting bolts, nuts, washers and rivets in air duct processing, and core-pulling rivets shall not be used.
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