The processing of Jinan air duct is mainly composed of corner codes, clamps and connectors connected with the air duct as a whole. Although the cost of this kind of air duct is relatively low and the consumption of angle steel is reduced, its strength is not as good as that of angle steel in practical application, and the air leakage is also relatively large. It has to be machined. It is difficult to make by hand. It is usually only used for fresh air system, air conditioning system, etc. The smoke exhaust system is still an air pipe connected by angle steel. But the civil air defense project is absolutely not allowed to use the common board connection.
The material requirements in the air duct manufacturing process are quite exquisite. When the air duct surface is aluminum foil, in order to ensure that the surface is not easy to damage, the aluminum foil material and thickness are specified, and the aluminum foil thickness of the air duct surface composed of aluminum foil and reinforcement material is specified.
One of the basic conditions to ensure the composite material is the bonding of the internal and external insulation materials of the thin steel ventilation pipe. The defects of the plate in a certain range will not only affect the service life of the air duct, but also reduce the insulation effect of the air duct. Therefore, the defect must not exceed 6 to achieve the normal use of materials in the system.
Nonmetal air duct materials develop rapidly and have many kinds. Because of their characteristics and advantages, they have been more and more widely used. In order to ensure the use, according to the engineering needs, it is suggested that the air ducts made of these materials should have the combustion performance requirements of non combustible or non combustible B1, and the surface must be non combustible materials. According to the engineering practice for many years and the current situation of the products in China, the test values of the small peel strength and the thickness of the aluminum foil of the hot pressed strip are specified. The width of the tape shall not be less than 50mm to prevent the tape from failing to meet the wall sealing strength and the service life of the pipeline. The advantage of hot adhesive tape is that it depends on hot-melt bonding. As long as it is not heated, the surface of the adhesive solidifies at room temperature and has a strong bonding strength.
Air duct processing is an important part of ventilation and air conditioning system. Most of them are made by pipeline processing equipment, such as pipeline production line. However, for a variety of reasons, there may be problems with the ducts handled by the duct handling equipment.