Sökning: "Canisters"

Visar resultat 1 - 5 av 20 avhandlingar innehållade ordet Canisters.

  1. 1. Manufacturing of heavy rings and large copper canisters by plastic deformation

    Författare :Hamzah Ssemakula; KTH; []
    Nyckelord :Pore closure; Effective strain; Hydrostatic pressure; New concept; Hot extrusion; Copper; Grain size; Canisters; Load;

    Sammanfattning : .... LÄS MER

  3. 2. Friction stir welding of copper canisters for nuclear waste

    Författare :Therese Källgren; Rolf Sandström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Friction Stir Welding FSW ; Copper; Welding; Finite Element Method FEM ; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The Swedish model for final disposal of nuclear fuel waste is based on copper canisters as a corrosion barrier with an inner pressure holding insert of cast iron. One of the methods to seal the copper canister is to use the Friction Stir Welding (FSW), a method invented by The Welding Institute (TWI). LÄS MER

  4. 3. Investigation and modelling of friction stir welded copper canisters

    Författare :Therese Källgren; Rolf Sandström; Hannu Hänninen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction Stir Welding FSW ; Copper; Welding; Finite Element Method FEM ; SKB; Material flow; Materials science; Teknisk materialvetenskap;

    Sammanfattning : This work has been focused on characterisation of FSW joints, and modelling of the process, both analytically and numerically. The Swedish model for final deposit of nuclear fuel waste is based on copper canisters as a corrosion barrier with an inner pressure holding insert of cast iron. LÄS MER

  5. 4. Friction Stir Welding of Copper Canisters Using Power and Temperature Control

    Författare :Lars Cederqvist; Innovation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction stir welding; copper; temperature control; PID control;

    Sammanfattning : This thesis presents the development to reliably seal 50 mm thick copper canisters containing the Swedish nuclear waste using friction stir welding. To avoid defects and welding tool fractures, it is important to control the tool temperature within a process window of approximately 790 to 910°C. LÄS MER

  7. 5. Manufacturihng of heavy rings and large copper canisters by plastic deformation

    Författare :Hamzah Ssemakula; KTH; []
    Nyckelord :pores; grain size; low forginnig load; effective strain;

    Sammanfattning : Plastic deformation processes transform material fromas-received state to products meeting certain requirements inproperties, microstructure and shape. To achieve thistransformation, the relationship between material response andprocess conditions should be understood. LÄS MER