35 results about "Ultrasound cavitation" patented technology

The invention discloses a coaxial type ultrasound and resistance coupling welding device and a welding method. The welding device comprises an upper ultrasound applicator, an upper annular electrode, a lower ultrasound applicator and a lower annular electrode, wherein the upper ultrasound applicator is coaxially sleeved with the upper annular electrode, and the lower ultrasound applicator is coaxially sleeved with the lower annular electrode. The upper ultrasound applicator and/or the lower ultrasound applicator are/is connected with a first servo pressurization device, and the upper annular electrode and/or the lower annular electrode are/is connected with a second servo pressurization device. The welding method includes a prepressing step, an electroplastic induction solid-phase connecting step, a nugget forming step and an ultrasound vibration cooling crystallization step. The coaxial type ultrasound and resistance coupling welding device and the welding method can guarantee that ultrasound vibration and resistance heating can simultaneously act on a welding spot, the ultrasound welding process and the resistance spot welding process are coupled effectively, the ultrasound cavitation cleaning effect is introduced, and metal generates the electroplastic effect and the high-frequency ultrasound fine grain effect in the welding procedure, so that nonferrous metal, high-strength steel and other typical metal materials difficult to weld can be welded in a high-efficiency, high-quality and low-energy-consumption mode.