The presence of air channels is mandatory not only in industrial premises, but also in public buildings with a large area. They provide a timely supply of fresh air and can be part of the climate system. To make them, you need special equipment for the production of ventilation pipes.
Product configuration selection
To equip the air supply system, products of various configurations are used. Basically they have a round or rectangular cross section. At the first stage, it is necessary to determine their form. Depending on this, certain types of machines are selected.
Making round pipes is less time consuming, but they are not as demanded as rectangular ones. Therefore, it is recommended to opt for the latter. As the manufacturing material, galvanized sheets of iron with a thickness of 0.5 to 1 mm are used. The dimensions of the ventilation pipes are also determined by the parameters of the equipment. The main overall characteristics of the product are:
- Cross-sectional area. The volume of air flow passing over a certain period of time depends on this. Varies from 0.008 to 0.79 m². For round, the diameter can be from 10 to 100 cm.
- Length of the product. The minimum value is 200 mm.
- Wall thickness.
For the manufacture of steel ducts, a production line is selected for which the productivity of each section is calculated individually.
Material processing
As a starting material, rolled galvanized iron or aluminum sheets can be used. The cost of ventilation pipes (from 200 rubles) consists of the purchase price, production costs and trade allowance. The latter indicator is calculated individually, depending on market conditions.
Most often, galvanized iron rolls are used. At the first stage of production, on a special machine, unwinding of steel sheets and cutting with the help of a guillotine into blanks is performed. Then the material is conveyed through the conveyor line to the pre-processing stage. The surface of the sheet is zigzag - applying with the help of bilateral shafts the recesses that are necessary to give the element stiffness. Further, the future product is transported for final molding.
Manufacture
If it is necessary to make round ducts, roll mills are used. They give the product a cylindrical shape of a certain diameter. For the production of square tubes, a bending machine is required.
It should be noted that this equipment for the production of ventilation pipes is designed for the manufacture of rigid products. The manufacturing process for the production of flexible duct elements is much more complicated and not always economically viable.
The final stage is welding or rolling of the duct seams. The choice of method directly depends on the manufacturability of the line. Pipes with welded seams have the best performance indicators, but the cost of equipment to perform this work is much higher.
Additional items
In addition to the main elements of the duct, it is necessary to provide for the manufacture of additional parts of the system. These include fasteners and spacer parts for creating branched systems. The production of these components can be arranged on existing equipment.If necessary, the modification of certain machines is carried out, in particular, shafts are added for rolling other diameters for processing small parts.
Currently, there are a number of companies providing ready-made assembly lines for the production of ventilation pipes. Their cost directly depends on the complexity of manufacturing and the volume of products. It is recommended to purchase machines from one supplier, as he can provide not only components in the event of a breakdown, but also provide consulting services.
