Mein Praesentationsbild - Berlin, 2008.

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Structural Aspects of Metal Joining,
Stretching and Stamping Using Ultrasonics


V. Prieb
"MFS-Büro Dr. Prieb", Berlin, 1999
(on behalf of "Ultrasonics Steckmann GmbH")
(US-Welding aluminum plate absorbers with copper water pipes in solar collectors)


Abstract: The structure and component distribution at the weld interface of ultrasonically joined (welded) metal pairs was investigated using scanning electron microscopy (SEM) and light optical microscopy (LOM) in order to understand the bonding mechanisms and processes which enable the ultrasonic joining of metals. The metal pairings copper-copper, copper-aluminum, copper-silver (silver-coated brass) and copper-steel were welded. Thus, it can be concluded about the main mechanisms responsible for ultrasonic joining of metals.

The plastification and plastic deformation of the metal workpieces being joined or stretched while held under constant contact pressure plays an essential role in ultrasonic welding. Deformation stages and mechanisms peculiar to the ultrasonic joining process are theoretically discussed.

Technological and technical problems are discussed too.

More about this in my monograph, published in September 2022:
"Ultrasonic engineering and ultrasonic technologies"
, PDF-file