Correlation of wear and work in dual pivoted jaw crusher tests

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

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)334-349
    Number of pages16
    JournalProceedings of the institution of Mechanical Engineers Part J: Journal of Engineering Tribology
    Volume234
    Issue number3
    Early online date15 Sep 2018
    DOIs
    Publication statusPublished - 1 Mar 2020
    Publication typeA1 Journal article-refereed

    Keywords

    • Jaw crusher
    • comminution
    • work
    • wear
    • abrasive wear
    • ENERGY EFFICIENCY

    Publication forum classification

    • Publication forum level 1

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