Correlation of wear and work in dual pivoted jaw crusher tests

Juuso Terva, Kati Valtonen, Pekka Siitonen, Veli-Tapani Kuokkala

    Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

    Abstrakti

    A laboratory sized jaw crusher with uniform movement of the jaws, the dual pivoted jaw crusher, was used to determine the relationship between wear and work. Wear was concentrated on the jaw plates opposing each other and was measured as mass loss of the specimens. Work was measured directly from the force and displacement of the instrumented jaw, which allowed work to accumulate only from the actual crushing events. The tests were conducted with several jaw geometries and with two motional settings, where the relation of compressive and sliding motion between the jaws was varied. The tests showed that the relation between wear and work was constant in many of the tested cases. In certain tests with larger lateral and faster contact speed, wear occurred at relatively lower amounts of work. This behavior was more definite when the relation of wear and work was investigated using modified Archards wear equation. The results indicate that the lower amount of needed work could stem from the material reaching a dynamic situation, where the flow stress becomes increasingly strain-rate dependent.

    AlkuperäiskieliEnglanti
    Sivut334-349
    Sivumäärä16
    JulkaisuProceedings of the institution of Mechanical Engineers Part J: Journal of Engineering Tribology
    Vuosikerta234
    Numero3
    Varhainen verkossa julkaisun päivämäärä15 syysk. 2018
    DOI - pysyväislinkit
    TilaJulkaistu - 1 maalisk. 2020
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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