NDLI: Ultrasonic assisted simultaneous composite casting

Content Provider	IEEE Xplore Digital Library
Author	Saalbach, K.-A. Freytag, P. Kerber, K. Twiefel, J.
Copyright Year	2012
Description	Author affiliation: Inst. fur Dynamik und Schwingungen, Leibniz Univ. Hannover, Hannover, Germany (Saalbach, K.-A.; Twiefel, J.) \|\| Inst. fur Werkstoffkunde, Leibniz Univ. Hannover, Hannover, Germany (Freytag, P.; Kerber, K.)
Abstract	This article reports on the improvement of cohesive connections by ultrasound assistance during master forming. In an attempt to produce monolithic components of several metals by simultaneous composite casting quality of the resulting bond between the metals was insufficient. Impurities and oxide layers on the metal surface were determined as the reason for bad bonding. In order to achieve an improvement the authors proposed ultrasonic excitation of the separating metal plate, in order to clean the plate's surface by occurring cavitation. To verify the effect of such excitation, a feasibility study was carried out and the results are presented here. An ultrasonic transducer which provided an opportunity of mounting metal disks at its tip was developed and manufactured for these experiments. Aluminum was melted and the transducers tip with mounted metal disk, representing the separating plate, was dipped into the melt for a defined period of time. In the experiments the vibration amplitude of the ultrasonic excitation was varied. As a result an amplitude-dependent wetting improvement could be noted, which can even have a destructive effect on the samples.
Starting Page	775
Ending Page	777
File Size	619240
Page Count	3
File Format	PDF
ISBN	9781467345613
ISSN	19485719
e-ISBN	9781467345620
DOI	10.1109/ULTSYM.2012.0193
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-07
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Aluminum Copper Acoustics Casting Vibrations Magnesium ultrasonic transducer Aluminum melt cavitation composite casting
Content Type	Text
Resource Type	Article

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