... design 20 KHZ Ultrasonic Metal Welding MachineSummarize: Ultrasonic metal welding machine from South Nekon uses ... machine is suitable for all non-ferrous metal welding including copper, aluminium, tin, nickel, gold, silver, molybdenum, stainless steel in sheets ... , sticks, wires, pieces and so on.Finished welding samples: Ultrasonic metal welding machine