Factors to Consider and Reasons for Inaccurate Angles of Spiral Duct Machine Processing and Cutting

What aspects need to be paid attention to in the processing and cutting of spiral duct machine?

Treatment of plate thickness

The size of ventilation duct and fittings is marked, and the outer size is calculated for rectangular duct, while the outer diameter size is calculated for circular duct. The ventilation duct is made of thin steel plate, galvanized steel plate, aluminum plate, stainless steel plate, with a thickness generally ranging from 0.5-2mm. The size has little influence on the unfolding, so it can be ignored during unfolding. However, for thick-walled ducts and components with special requirements, when the wall thickness is greater than 2mm, the influence of the wall thickness should be considered. For the unfolding and cutting of circular ducts, the diameter should be calculated based on the median, outer diameter minus wall thickness, or inner diameter plus wall thickness. For rectangular ducts, it is still calculated based on the outer size of the duct.

Unfolding allowance

The key point in unfolding is to make a good bite and reserve allowance for the assembly flange. When unfolding and cutting thin plate ducts, fittings, and components, the connection method of thin plate and whether the air nozzle, fittings, and components are equipped with flanges should be considered, so as to leave a certain margin during unfolding.

What should be done if the bending angle of spiral duct machine and elbow angle are not accurate?

The duct production line has many advantages, including fast, stable and stable wire speed of duct production. However, it also has its own shortcomings and problems, so it is necessary to find out the reasons and solve them in time. Here we introduce how to deal with the inaccurate bending angle of the spiral duct machine.

The rectangular duct has two opposite surfaces that are not parallel; the folding angle is uneven; the slope is uneven; and the bite is not tight.

The force on the duct connection is uneven, the duct is not smooth after installation, the flange gasket is not tight, and the air conditioning load loss and shortened service life are caused by air leakage.

The cutting layout of the plate is inaccurate, and the duct is parallel to the duct, and the length and width of the plate are not equal.

Measures: When unfolding and cutting with spiral duct machine, the plate should be strictly angled, and the length, width, and diagonal of each piece of plate should be checked to control the deviation within the allowed range. After cutting, the two plates in the opposite direction of the duct should accurately overlap.

BLKMA Company specializes in the production and sale of automatic duct production lines, rectangular duct forming machines, spiral duct forming machines, circular duct forming machines, etc. Welcome to inquire.