Duct manufacturers how to do a good duct production line duct leak tight it?
1, Duct product requirements
(1) Static pressure within the duct requirements
(2) cleanliness requirements within the duct
(3) duct seams, the connection of the sealing requirements
(4) finished product flatness requirements
2, Duct sealing process
(1) the wind pipe bite the form of a single bite and joint bite mouth technology.
(2) the connection form of metal duct using angle steel flange connection technology.
3, Air duct sealing measures to ensure
(1) Duct straight pipe production, make plans to minimize vertical splicing, and horizontal splicing seam can not do not have. Rectangular duct side length less than or equal to 900mm, the bottom panel shall not have splicing seam, rectangular duct side length greater than 900mm, there should be no horizontal splicing seam.
(2) In the process, try to reduce the flange interface, in the next expected, we must draw a good drawing, consider the perfect. Consider the plate size to meet the expected cutting and loss is not too large, the elbow, tee, etc. made into a straight pipe, thereby reducing the flange interface.
(3) duct seams mouth seam, flange corner seam, rivets and other cracks at the sealant coated with sealant, to be done before the glue duct surface stains.
(4) flange gasket selection of the appropriate rubber plate.
(5) duct and flange connection, the flanging close to the flange, the gap painted sealant.
(6) rivets fixed sealant coated.
4, Testing
Leak detection light duct leak.
