Sökning: "mechanical treatment"

Visar resultat 1 - 5 av 553 avhandlingar innehållade orden mechanical treatment.

  1. 1. Effects of manufacturing chain on mechanical performance Study on heat treatment of powertrain components

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Johan Fahlkrans; KTH.; KTH.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Heat treatment; case hardening; carburising; induction hardening; gas quenching; tempering; straightening; fatigue strength; contact fatigue; fracture mechanics; Industriell ekonomi och organisation; Industrial Engineering and Management; Production Engineering; Industriell produktion; Materials Science and Engineering; Teknisk materialvetenskap;

    Sammanfattning : The increasing demands for lightweight designs with high strength call for improved manufacturing processes regarding heat treatment of steel. The manufacturing process has considerable potential to improve the mechanical performance and to obtain more reliable results with less variation. LÄS MER

  2. 2. Simulation of welding and heat treatment modelling and validation

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Henrik Alberg; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : Many aerospace components with complex geometry are fabricated from smaller parts using joining techniques such as welding. Welding and the heat treatment which usually follows, can result in unwanted deformation and stresses. LÄS MER

  3. 3. Material modelling for simulation of heat treatment

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Henrik Alberg; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : Heat treatment of materials is a fundamental metallurgical process. Materials are subjected to heat treatment to relieve internal stresses, reduce brittleness and to improve machinability. The properties of materials can also be altered such as hardness, strength, toughness, and wear resistance to suit particular applications. LÄS MER

  4. 4. HCCI Combustion by Retaining Residuals. Development and Analyses of a Method to Reduce Fuel Consumption for Passenger Car Gasoline Engines

    Detta är en avhandling från Chalmers University of Technology

    Författare :Lucien Koopmans; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysik; Physics; Teknisk mekanik; Engineering mechanics; homogeneous charge compression ignition HCCI ; controlled auto-ignition CAI ; variable valve timing; fuel-consumption; engine emissions; internal combustion engines; gasoline;

    Sammanfattning : The demand for more powerful engines on one hand, and greater fuel-efficiency on the other, requires a revolution in engine combustion technology. Homogeneous charge compression ignition (HCCI) can be a fuel-saving, low emissions approach that seems to be very suitable for large displacement passenger car engines. LÄS MER

  5. 5. Microstructure and mechanical properties of a 5 wt.% Cr cold work tool steel Influence of heat treatment procedure

    Detta är en avhandling från Trollhättan : University West

    Författare :Arbab Rehan; Högskolan Väst.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cold work tool steel; Heat treatment; Microstructural characterisation; Mechanical properties; Retained austenite; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : The demand for Advanced High Strength Steel (AHSS) in the automotive industry is increasing day by day. It is mainly motivated by the fact that AHSS can be used as thin sheets while having high strengths. LÄS MER