通风管道制作过程中对材料的要求是相当有考究的,若通风管道表面层为铝箔材质时,为确保表面层不易损坏,故对铝箔材质及厚度作出规定,并对铝箔与增强材料复合的风管表层的铝箔厚度作了规定。而镀锌钢板的耐腐蚀性相对比较好,但在加工过程中铁皮对温湿度要求较高,需要在超净系统中效过滤。普通冷轧钢板价格便宜,但易腐蚀 ,一般通风用送风、回风、新风、排风、排烟系统。
The material requirements in the production process of ventilation ducts are quite meticulous. If the surface layer of the ventilation duct is made of aluminum foil material, in order to ensure that the surface layer is not easily damaged, regulations are made for the aluminum foil material and thickness, and the thickness of the aluminum foil on the surface of the composite air duct made of aluminum foil and reinforcement material is also specified. The corrosion resistance of galvanized steel plate is relatively good, but during the processing, the iron sheet has high requirements for temperature and humidity, and needs to be effectively filtered in an ultra clean system. Ordinary cold-rolled steel plates are inexpensive but prone to corrosion. Generally, ventilation systems include supply air, return air, fresh air, exhaust air, and smoke exhaust.
其次,薄钢板法兰通风管道内、外表层和内部绝热材料粘接牢固,是保证复合材料的基本条件之一。超出一定面积的板材缺陷,不仅影响风管使用寿命,而且有时会降低其保温效果。所以缺陷不得大于6‰,以达到材料在系统中的正常使用。
Secondly, the strong bonding of the inner and outer layers and internal insulation materials of the thin steel plate flange ventilation duct is one of the basic conditions to ensure the composite material. Defects in the board exceeding a certain area not only affect the service life of the air duct, but also sometimes reduce its insulation effect. So the defect should not exceed 6 ‰ to achieve normal use of the material in the system.
目前,非金属风管材料发展较快,品种较多,因其具有的特性和优点,应用也越来越广泛。为了保证使用中的安全,对这些材料制作的风管提出了应按工程的需要具有不燃或难燃B1级的燃烧性能要求,而其表面层一定为不燃材料。根据我国多年的工程应用实践与产品状况,规定了热敏胶带与压敏胶带的剥离强度试验低值与铝箔厚度值;要求胶带宽度不应小于50mm
At present, non-metallic air duct materials are developing rapidly with a variety of varieties. Due to their characteristics and advantages, their applications are becoming increasingly widespread. In order to ensure safety during use, it is proposed that the air ducts made of these materials should have non combustible or flame retardant B1 level combustion performance requirements according to engineering needs, and their surface layer must be made of non combustible materials. Based on years of engineering application practice and product status in China, the low peel strength test values and aluminum foil thickness values for thermal and pressure sensitive tapes have been specified; Require that the width of the tape should not be less than 50mm