Welding aluminum alloy, high strength and light weight. The main welding process is TIG welding TIG, GMAW MIG, FSW FSW, resistance spot welding. Aluminum welding protection measures 1, before welding chemical + mechanically remove the oxide groove and the peripheral portion of the workpiece and the wire surface, the order is chemical cleaning, mechanical grinding; 2, the welding process to adopt a qualified protective gas protection; 3, when gas welding using flux, the welding process used constantly prick wire bath surface oxide film. Perforated aluminum honeycomb structure constructed sound-absorbing ceiling panels perforated aluminum panels with perforated back, relying on high-quality adhesives and aluminum honeycomb core bonded directly into the aluminum honeycomb sandwich structure, honeycomb core with a layer of sound-absorbing panels and the rear plate affixed cloth. Since the honeycomb core aluminum honeycomb interior divided into a number of closed chamber to prevent air flow, so that hindered sound waves to improve the absorption coefficient (up to 0.9 or more), while increasing the strength of the sheet itself Shandong Aluminum ash recycling, so that a single block size sheets can do more, and further increased design freedom. Hebei room acoustics design can recycle aluminum gray, different perforation rate design, within a certain range of sound absorption coefficient combined control structure Henan aluminum ash recycling, both to meet the design effect, and also be able to reasonably control costs. By controlling the hole diameter, pitch, and can change according to customer requirements perforation rate, the maximum perforation rate <30%, pore size generally used ∮2.0, ∮2.5, ∮3.0 other specifications, requirements and perforated back panel the same, the use of sound-absorbing cloth quality woven fabrics and other sound-absorbing material. Suitable for subway, theaters, radio, television, textile, and noise over the standard factory buildings and the sound of stadiums and other large public buildings acoustic wall panels, ceiling panels. Aluminum ash recycling scrap metal recycling _ _ Shengxin gray aluminum Recycling scrap metal from the Linyi City Shengxin Limited. Aluminum ash recycling scrap metal recycling _ _ Shengxin gray aluminum recycling Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Zhu new.