通风管道材料选择的时候注意哪些问题?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。
What are the issues to pay attention to when selecting materials for
ventilation ducts? The requirements for materials 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 material and thickness of the aluminum foil, 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 cheap, but
they are 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 of the thin
steel plate flange ventilation pipeline and the internal insulation
material 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 the
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;要求胶带宽度不应定网站建设 伺服液位仪 防撞墙模具 唐山护栏 遮阳网小于50mm,防止使用的胶带不能满足管壁密封的强度和风管使用年限。热敏胶带的优点是依靠热熔粘接,只要不在加热,在常温下胶面是固化的,具有牢靠的粘接强度。
At present, non-metallic air duct materials have developed rapidly and
have a variety of varieties. Due to their unique characteristics and
advantages, their applications are becoming increasingly widespread. In
order to ensure safety in use, it is proposed that the air ducts made of
these materials should have non combustible or non combustible 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; The width of
the tape should not be less than 50mm to prevent the use of tape that
cannot meet the strength of the pipe wall sealing and the service life
of the air duct. The advantage of thermosensitive tape is that it relies
on hot melt bonding. As long as it is not heated, the adhesive surface
is cured at room temperature, and it has strong bonding strength.