Sökning: "uppkolning"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet uppkolning.

  1. 1. Influence of coal particle sizes on the mechanical strength of iron-carbon briquettes : With focus on steelmaking applications

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Daniel Zaharije Hodgson; Efe Karadag; Maxime Pierre Jean-Claude Saillen; [2022]
    Nyckelord :;

    Sammanfattning : Replacing fossil carbon materials with renewable biocarbon is one way to reduce the net carbon dioxide emissions of the iron and steelmaking industry. Carburization is an important application in the electric arc furnace (EAF), and is mostly achieved by adding fossil-based carbon materials into the melt today. LÄS MER

  3. 2. Restspänningsanalys av sätthärdat stål

    M1-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Joel Lehtinen; William Apelqvist; [2020]
    Nyckelord :16CrMnS5; case-hardening; residual stress; LPC; 16CrMnS5; sätthärdning; restspänning; LPC;

    Sammanfattning : Denna rapport behandlar restspänning i stålet 16MnCrS5 som uppkommer efter sätthärdning med traditionell uppkolning med släckning i olja och lågtrycksuppkolning med släckning i gas. Rapporten har ett fokus på restspänningar men behandlar även materialegenskaper generellt. LÄS MER

  4. 3. Reliable Carburization of AISI H13 Steel : The Impact of Preoxidation

    Master-uppsats, KTH/Materialvetenskap

    Författare :Martin Palm; [2020]
    Nyckelord :Preoxidation; Case hardening; Uddeholm Orvar® Superior; Passive oxide layers; Iron oxides; Carbon adsorption;

    Sammanfattning : Case hardened Uddeholm Orvar® Superior (Orvar) has the potential to replace currently used materials in shafts inside transmissions, which would lower the overall weight and thus result in lower fuel consumption while maintaining the necessary mechanical properties. However, previous studies have failed to reliably carburize the steel during the case hardening process. LÄS MER

  5. 4. From Bloomery Furnace to Blast Furnace : Archeometallurgical Analysis of Medieval Iron Objects From Sigtuna and Lapphyttan, Sverige

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Andreas Helén; Andreas Pettersson; [2019]
    Nyckelord :;

    Sammanfattning : During the Early Middle Ages, the iron production in Sweden depended on the bloomery furnace, which up to that point was well established as the only way to produce iron. Around the Late Middle Ages, the blast furnace was introduced in Sweden. LÄS MER

  7. 5. Aging of FeCrAl Surface Coatings

    Master-uppsats, KTH/Materialvetenskap

    Författare :Fadi Alsaifi; [2019]
    Nyckelord :Coating surface; FECRAL alloys; overlay welding; hvaf; thermal spraying; porosity; oxidation; corrosion MIG; TIG; HVOF;

    Sammanfattning : This Thesis is about the aging of FECRAL surface coatings. In this thesis various substrates have been investigated such as 16 Mo3, 304, 347, Sanicro 31, 800HT, Nikrothal 80 and Kanthal APMT. LÄS MER