ULTRASONIC WELDING
Ultrasonic welding is included in solid state welding, where the connection is produced by the presence of vibrational energy that has a high frequency as well pressure on the workpiece. Working Principle and Explanation Ultrasonic is the presence of ulfrasonic vibrations produced by the transducer which is then transmitted towards the end sonofrode and causes the 2 metals being joined to form heat is generated, and the oxide layer breaks down, then with pressure from the clamping will result in the two materials becoming connected.
This bonding occurs without being accompanied by anything smelting of parent metal. In the welded joints, there are plastic deformation that occurs at surface boundaries and has more strength when compared with other connection processes.
Booster
Reinforcement sections and weld stacks serve two purposes, primarily strengthening Mechanical vibrations are generated at the tip of the transducer and transmitted to the welding horn. The secondary purpose is to provide a location to install the fuse on welding machine.The booster expands and contracts when the francducer applies energy ultrasonic. The booster, like other elements in the welding stack, is a tuned device therefore it must resonate at a certain frequency to transfer ultrasonic energy and transducer to the welding horn To function successfully, the booster must be half and the wavelength of the ultrasound in the material and where it is produced, or multiples of and this long. Typically, it is one and a half wavelengths.
Welding Horn
Welding horns are welding elements and stacks that supply energy to the components being welded. The design of the welding horn is very important for successful welding. It is highly recommended that it be made kiakson welding is only carried out by companies that specialize in ultrasonic welding.
Tranduser
Transducers, also known as converters, convert electrical energy and generators into mechanical vibrations used for the welding process. This is terdin and a number of sandwiched piezo-electric ceramic discs between two blocks of metal, usually titanium. Between each disc there is a thin metal plate, which forming electrolytes. When the electrical signal is sinusoidal fed to the francducer via electrodes, discs expands and contracts, producing peak-to-peak axial movement 15 to 20 ofm.Transducer is a device that complex and must be handled with care. After element is damaged, the transducer will not function.
Welding Stack
Is Welding parts and machines Ultrasonic which provides mechanical vibrations ultrasonic. This is generally a three-part unit consisting and transducer, booster and welding horn, installed on the welding machine at the midpoint of the booster section. The stack is a tuned resonator, somewhat like musical instrument tuning fork. For it to work, frequency the resonance of the tuned weld stack must be suitable with the frequency of the electrical signal from the generator (up to in 30Hz).
