Sökning: "weld power"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden weld power.

  1. 1. Study of process parameters in laser beam welding of copper hairpins

    Kandidat-uppsats, Högskolan i Skövde/Institutionen för ingenjörsvetenskap

    Författare :Dan Lönn; David Spångberg; [2022]
    Nyckelord :Laser Welding; Hairpin Welding; Copper Laser Welding; Process Parameter; Multi-Physical Simulation; Computed Tomography Scan; Design of Experiment;

    Sammanfattning : This study had the purpose to further the use of industrial lasers in the manufacturing of hairpin electric motors by optimizing the process of contacting the hairpins. A problem with laser beam welding of copper is the porosity created in the process which can lead to increased resistance of the welded region along with degraded mechanical properties. LÄS MER

  3. 2. Laser Arc Hybrid Welding of Thicker 6000-series Aluminium Alloy : Laser-MIG butt welding of 8 mm 6082-t6

    Master-uppsats, KTH/Industriell produktion

    Författare :Björn Lindeberg Nilsson; [2022]
    Nyckelord :;

    Sammanfattning : Laser arc hybrid welding presents many benefits but has many parameters that must be optimised for it to work. It becomes even more challenging when welding thicker aluminium with the process. Welding of thicker aluminium alloys involves a lot of different challenges, on itself. LÄS MER

  4. 3. Modeling of Precipitation by Structural Phase-Field Crystal Method

    Master-uppsats, Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

    Författare :Jacob Holmberg-Kasa; [2021]
    Nyckelord :strain-age cracking; SAC; structural phase-field crystal; XPFC; nickel-based alloys; precipitation;

    Sammanfattning : Nickel-based alloys are used in components such gas turbines within the aerospace industry and electric power generation due to its high tensile, rapture and creep strength. Increasing the efficiency of gas turbines are crucial to reduce emissions within the aerospace industry and increasing power gain for electric power generation. LÄS MER

  5. 4. Interaction between weld residualstresses and warm pre-stressing

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Elaheh Etemadi; [2019]
    Nyckelord :;

    Sammanfattning : Cleavage fracture is a catastrophic phenomenon as it is a sudden structural collapse occurring to structures made of insufficiently ductile steels working at lower temperatures. In this study, the focus is on the material used in reactor pressure vessels (RPV) in nuclear power plants. LÄS MER

  7. 5. Residual stresses in Ti-6Al-4V from low energy laser repair welding

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Peter Ericson; [2018]
    Nyckelord :Micro laser welding; Low energy welding; Ti-6Al-4V; Ti64; Residual stress; Response Surface Methodology; Repair welding; Welding simulation; Mikrolasersvetsning; Lågenergetisk svetsning; Lågenergisvets; Ti-6Al-4V; Ti64; Restspänningar; Response Surface Methodology; Reparationssvets; Svetssimulering;

    Sammanfattning : Millimeterstora och svårupptäckta defekter kan uppstå internt i stora och komplexa gjutgods av Ti-6Al-4V, ibland går dessa oupptäckta tills detaljen genomgått mekanisk bearbetning och en stor kostnad redan har gått in i den. Dessa defekter och andra industriella olyckshändelser leder till ett behov av additiva reparationsmetoder där den för tillfället rådande metoden är TIG-svetsning. LÄS MER