Sökning: "hårdhet"

Visar resultat 16 - 20 av 116 uppsatser innehållade ordet hårdhet.

  1. 16. Characterization of Secondary Carbides in Low-Alloyed Martensitic Model Alloy Tool Steels

    Master-uppsats, KTH/Materialvetenskap

    Författare :Jubica Jubica; [2020]
    Nyckelord :martensitic steel; secondary hardening; precipitation; STEM; EDS; Prisma; size distribution; martensitiskt stål; sekundärhärdning; utskiljning; STEM; EDS; PRISMA; storleksfördelning;

    Sammanfattning : The development of tool steels for making and shaping other materials requires a better understanding of the material's properties during manufacture. These high-quality steels include many alloying elements, which give increased hardness during tempering. For producing hardened microstructures, austenite generation is essential. LÄS MER

  3. 17. Development of a method for estimation of contact fatigue life in hypoid gears

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Srigiripura Sahana Vittal; [2020]
    Nyckelord :Hypoid Gear; Rolling Contact fatigue; Fatigue life; FEM; Gear Contact life; Spalling; physical testing; fatigue analysis; Hypoidväxel; rullande kontaktutmattning; utmattningslivslängd; FEM; växelkontaktlivslängd; spalling; fysisk testning; utmattningsanalys;

    Sammanfattning : Hypoid gears have been used extensively in automobiles, aerospace, marine and other applications for decades. The special advantages of hypoid gears come with inherent contact complexities of varying curvature and sliding in both profile and lengthwise direction. LÄS MER

  4. 18. Modified lignin as replacement of carbon black in elastomers- For the development of sustainable tyre technology : The substitution of carbon black with modified lignin- Green tyre technology

    Master-uppsats, Karlstads universitet/Avdelningen för kemiteknik

    Författare :Mostafa Ahmed Ismail; [2020]
    Nyckelord :lignin; tyre rubber; elastomeric materials; esterfication;

    Sammanfattning : Due to its large flexibility, low-price, large availability, and properties lignin is seen as an important compound with a wide range of applications. The increasing demand of fossil-based rubber materials is causing a serious threat to the environment and it is contributing to plastic- and marine pollution, ozone depletion and carbon dioxide emission (CO2) [1,2]. LÄS MER

  5. 19. How different fractions of soluble ß-glucans from oats affect staling of high oat flour containing breads

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Martin Jönsson; [2020]
    Nyckelord :ß-glucan; PromOat; Oat bread; Bread; Storage study; Food engineering; Livsmedelsteknik; Agriculture and Food Sciences; Technology and Engineering;

    Sammanfattning : Introduction. Bread is one of the most consumed foods in the world today. It is also the cause for major food waste streams. Most breads have turned into high glycaemic index products with low nutritional value. LÄS MER

  7. 20. 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