Welding Process of Air Duct Insulation Nails and Studs
Application of air duct insulation nail stud welding technology Air duct insulation nail stud welding technology is a construction method that has gradually emerged in recent years, mainly used in the fixing of air duct insulation.
(1) Its advantages:
1. It can improve production efficiency.
2. Reduce production links and improve design process.
3. Reduce the cost of production (labor, material, power energy), high welding strength, no deformation of the workpiece and convenient welding in various positions.
4. It is easy to operate, and the operation process is simple and easy to learn.
(2) Operation process and principle: it mainly uses the capacitor energy storage stud welding machine capacitor energy storage stud welding machine capacitor energy storage discharge, the stud arc striking principle, and instantly melts the bolt or the corresponding screw and the surface of the workpiece. A certain pressure, firmly welded on the workpiece. It can replace stud fixing methods such as riveting, drilling, welding, grinding, etc. The welding time is only 3-6 milliseconds, and the stud can be welded to a thin plate with a thickness of only 0.4-3 mm without causing deformation, discoloration or burn-through , will not damage the paint or coating on the back of the welded workpiece
(3) The difference between the insulation nail stud welding technology and the general air duct insulation technology The insulation nail stud welding technology and the glue bonding insulation nail technology are two processes in different sequences. The common insulation technology of air duct mainly adopts the glue bonding insulation nail technology. The glue bonding insulation nail technology is to fix the insulation nails first, and then press the insulation material. Insulation nail stud welding process is to lay insulation material first, and then fix it with nails.
Compared with the glue bonding insulation nail welding process, the insulation nail stud welding process has the following characteristics:
1. Reduced process: Because it is a welded insulation nail, there is no requirement for the cleanliness of the surface of the ventilator, eliminating the cleaning process.
2. Save time: the welding machine can weld up to 20 insulation nails per minute, and it is welded and fixed while laying insulation cotton, unlike glue bonding insulation nails, which requires solidification time.
3. Firm and reliable: Once the welding is completed, the insulation nails will never fall off naturally, thus effectively ensuring the construction quality.
4. No shape restriction: welding on ventilators of any shape can ensure the construction quality, especially when constructing on circular ventilators, it can show unparalleled advantages.
5. No seasonal restrictions: The welding construction of insulation nails is not limited by the temperature of the construction site, and welding in winter and any temperature will not affect the welding quality.
6. Safe construction: Since the construction method is a one-time installation completed while paving and fixing, it reduces the time and frequency of construction workers working at heights, making the construction safer.
7. No pollution: During and after construction, the process will not produce any pollution, which is more in line with the requirements of modern society.
The stud welding technology of air duct insulation nails can repair the parts of the bonded insulation nails that fall off due to poor bonding. For example, in the early stage of the ventilation and insulation project of Changsha Station, glue bonding insulation nail technology was used. During the later period of rush work, due to the cross-operation construction between various disciplines, the insulation layer of the air duct was seriously damaged, causing a large area to fall off. However, due to the decorative surface The construction has basically been completed, and there is no way to use glue to bond the insulation nails to rework and re-construct. Finally, the insulation nail stud welding technology used to repair the insulation layer through the grille holes on the decorative surface has achieved good results.
