Sökning: "cemented carbides"

Visar resultat 6 - 10 av 33 uppsatser innehållade orden cemented carbides.

  1. 6. Abrasionsmekanismer i labtest och fält : Utvärdering av metoder för nötningsprovning av spetsar till pinnkultivatorer

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Clara Landström; [2022]
    Nyckelord :tribologi; materialvetenskap; abrasiv nötning;

    Sammanfattning : In this master thesis two simplified and small-scale methods for two-body and three-body abrasive wear were examined. It was examined how representative the methods were compared to field-tested points in a cultivator for agriculture. A total of six points with different compositions were tested and ranked based on the test results. LÄS MER

  3. 7. Effect of post-treatment of cemented carbide : Microstructural investigation and evaluation of mechanical properties of cemented carbide inserts for rock tool applications

    Master-uppsats, Karlstads universitet/Avdelningen för maskin- och materialteknik

    Författare :Jessica Jacobs; [2021]
    Nyckelord :;

    Sammanfattning : Cemented carbides are used in rock tool applications by reason of their beneficial mechanical properties, i.e. a combination of high toughness, wear resistance and hardness. The cemented carbides commonly receive their hardness from tungsten carbides (WC) whereas cobalt (Co) is the dominating binder material. LÄS MER

  4. 8. Simulation of Residual Stresses in Cemented Carbide

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Emma Lundin; [2021]
    Nyckelord :;

    Sammanfattning : Cemented carbides are used in a multitude of applications within machining as they can withstand tough conditions. Therefore, the stress state in a virgin material is of interest. LÄS MER

  5. 9. The Effect of Cooling Rate on Sintered Cemented Carbides

    Master-uppsats, KTH/Materialvetenskap

    Författare :Lina Berglund; [2020]
    Nyckelord :Sintering; Cooling rate; Cemented Carbide; Sintering; Coercivity; Contiguity; Sintring; Kylhastighet; Hårdmetaller; Koercivitet; Kontiguitet;

    Sammanfattning : Magnetic measurements are useful tools for quality control of cemented carbides. Previous work at Sandvik Mining and Rock Technology has shown that the coercivity increases with increased cooling rate during sintering for a specific grade. LÄS MER

  7. 10. Binder Migration in Double Pressed Drill Bit Inserts

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Axel Bjerke; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : It is possible to produce functionally graded cemented carbides on a large scale by double pressing. Being able to predict the binder migration in WC-Co cemented carbides during the sintering is essential to the design of such cemented carbides. The cobalt content is one of the main factors determining the hardness gradient. LÄS MER