Experiences in powder plasma spheroidization

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Plasma spheroidization is a method by which originally non-spherical or at least not optimally round powder particles are melted with plasma flame. Natural spheroidization occurs due to surface tension, which leads to better flowing powders used for example in AM purposes. A new commercial plasma spheroidization unit was installed and the feasibility of the unit was tested with different kind of powders, several metal and composite powder materials were studied. The goal was to find limits of powder flowability, melting point, feed rate etc. of the plasma unit. The test campaign resulted that very fine powder do not feed consistently to the plasma, which results uneven spheroidization result. The plasma power is not a limiting factor, on the contrary low melting materials need lowering of the power. In addition, high power plasma induces easily fine particles on the surfaces of the spheroidized powder particles, which must be washed away.

    Original languageEnglish
    Title of host publicationEuro PM 2018 Congress and Exhibition
    PublisherEuropean Power Metallurgy Association EPMA
    ISBN (Electronic)978-1-8990-7250-7
    Publication statusPublished - 2018
    MoE publication typeA4 Article in a conference publication
    EventEuropean Powder Metallurgy Congress and Exhibition, Euro PM 2018 - Bilbao, Spain
    Duration: 14 Oct 201818 Oct 2018
    https://www.europm2018.com/ (Event site)
    https://www.epma.com/publications/euro-pm-proceedings/product/euro-pm2018-proceedings-usb (Proceedings)

    Conference

    ConferenceEuropean Powder Metallurgy Congress and Exhibition, Euro PM 2018
    CountrySpain
    CityBilbao
    Period14/10/1818/10/18
    Internet address

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  • Cite this

    Lagerbom, J., Sinilehto, H. M., Metsäjoki, J., & Pasanen, A. (2018). Experiences in powder plasma spheroidization. In Euro PM 2018 Congress and Exhibition European Power Metallurgy Association EPMA.