Carry out technical quality check before riveting air duct and flange

Date:2020-09-22 Author:a Click:

Among them, the metal duct is made of a variety of metal composite materials, including galvanized steel plate and stainless steel plate. With tank manufacturing industry sustainable development trend at present stage, more and more came to tank manufacturing industry and the company application, more and more companies into the came to tank manufacturing industry, composite duct composed of various inorganic materials compound, divided by a different variety, but see more qualitative light, porous structure, the heat transfer coefficient of large raw materials here are hot dip galvanized duct quality control key points 1, duct and flange connection when flanging total is not less than 6 mm wide, flanging symmetry leveling, close to the flange, the hole flanging not covered in silk, plow corners, gaps can not appear. 2. Rivet flanges should be riveted by hydraulic rivet machine. Rivet joints should be firm, and rivets should not fall off or leak riveting. 3, hydraulic plate shears, bite machine and other machinery and equipment should be adjusted according to the thickness of the plate before application, to ensure the processing accuracy of the air duct 4, when connecting flange rivets, make the axis of the rivets vertically divide the surface, make the rivets head to tighten the plate, so that the joint sealing. 5. Carry out technical quality check before riveting the air pipe and flange, and leave 10mm flanging amount in the pipe section.