Development and application of large-sized sonotrode systems for ultrasonic treatment of molten aluminum alloys

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This work presents design and performance characteristics of large-size ceramic and metal sonotrodes for ultrasonic treatment of molten aluminum alloys in industrial and pilot scale casters. ANSYS software was used to predict vibration characteristics and to design sonotrodes of various shapes made of silicon nitride base ceramics or Nb-based refractory metals. The design concept is based on requirements that users actually need to apply the sonotrodes on industrial scale, particularly high vibration amplitudes and large diameters of working tip. Both these parameters were found to be determined by the sonotrode shape, connection reliability and material properties. A number of sonotrodes was fabricated and examined for their ability to treat aluminum melt in DC casting process in order to refine the solidification structure. Although the ability to refine the metal structure was about the same for sonotrodes of both types, the ceramics barbell sonotrodes demonstrated much better performance with respect to acoustical and chemical stability, especially at high temperatures. On the other hand, the metal sonotrodes were highly susceptible to cavitation erosion.

Original languageEnglish
Title of host publicationLight Metals, 2019
EditorsCorleen Chesonis
PublisherSpringer International Publishing
Pages1597-1604
Number of pages8
ISBN (Print)9783030058630
DOIs
Publication statusPublished - 2019 Jan 1
EventLight Metals Symposium held at the TMS Annual Meeting and Exhibition, 2019 - San Antonio, United States
Duration: 2019 Mar 102019 Mar 14

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceLight Metals Symposium held at the TMS Annual Meeting and Exhibition, 2019
Country/TerritoryUnited States
CitySan Antonio
Period19/3/1019/3/14

Keywords

  • Cavitation intensity
  • Primary silicon refinement
  • SiN ceramics
  • Sonotrode design
  • Sonotrode durability
  • Vibration amplitude

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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