Laser cladding with scanning optics: Effect of scanning frequency and laser beam power density on cladding process

J Pekkarinen (Corresponding Author), A Salminen, Veli Kujanpää

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying
    Original languageEnglish
    Article number032002
    JournalJournal of Laser Applications
    Volume26
    Issue number3
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    frequency scanning
    Laser cladding
    Laser beams
    radiant flux density
    Optics
    laser beams
    optics
    Scanning
    scanning
    lasers
    Alloying
    Dilution
    scanners
    alloying
    dilution
    flexibility
    adjusting
    Lasers

    Keywords

    • Cladding
    • fiber laser
    • focal position
    • melt pool behavior
    • power density
    • process stability
    • scanner
    • scanning frequency

    Cite this

    @article{3e190540a47848679d54326d12917dd9,
    title = "Laser cladding with scanning optics: Effect of scanning frequency and laser beam power density on cladding process",
    abstract = "Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying",
    keywords = "Cladding, fiber laser, focal position, melt pool behavior, power density, process stability, scanner, scanning frequency",
    author = "J Pekkarinen and A Salminen and Veli Kujanp{\"a}{\"a}",
    year = "2014",
    doi = "10.2351/1.4868895",
    language = "English",
    volume = "26",
    journal = "Journal of Laser Applications",
    issn = "1042-346X",
    number = "3",

    }

    Laser cladding with scanning optics : Effect of scanning frequency and laser beam power density on cladding process. / Pekkarinen, J (Corresponding Author); Salminen, A; Kujanpää, Veli.

    In: Journal of Laser Applications, Vol. 26, No. 3, 032002, 2014.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Laser cladding with scanning optics

    T2 - Effect of scanning frequency and laser beam power density on cladding process

    AU - Pekkarinen, J

    AU - Salminen, A

    AU - Kujanpää, Veli

    PY - 2014

    Y1 - 2014

    N2 - Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying

    AB - Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying

    KW - Cladding

    KW - fiber laser

    KW - focal position

    KW - melt pool behavior

    KW - power density

    KW - process stability

    KW - scanner

    KW - scanning frequency

    U2 - 10.2351/1.4868895

    DO - 10.2351/1.4868895

    M3 - Article

    VL - 26

    JO - Journal of Laser Applications

    JF - Journal of Laser Applications

    SN - 1042-346X

    IS - 3

    M1 - 032002

    ER -