Search for dissertations about: "steel heat treatment process"

Showing result 1 - 5 of 42 swedish dissertations containing the words steel heat treatment process.

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

    Author : Arbab Rehan; Lars-Erik Svensson; Leif Karlsson; Högskolan Väst; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; 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;

    Abstract : 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. READ MORE

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

    Author : Johan Fahlkrans; Arne Melander; Bengt Lindberg; Stefan Jonsson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; 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;

    Abstract : 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. READ MORE

  3. 3. Advanced Gasification of Biomass/Waste for Substitution of Fossil Fuels in Steel Industry Heat Treatment Furnaces

    Author : Duleeka Gunarathne; Weihong Yang; Wlodzimierz Blasiak; Tobias Richards; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass; Pretreatment; Gasification; Pressure drop; Steel industry; Fuel switch; Energy efficiency; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : With the current trend of CO2 mitigation in process industries, the primary goal of this thesis is to promote biomass as an energy and reduction agent source to substitute fossil sources in the steel industry. The criteria for this substitution are that the steel process retains the same function and the integrated energy efficiency is as high as possible. READ MORE

  4. 4. Thermal and mechanical behaviour of railway wheel steel

    Author : Johan Ahlström; Chalmers University of Technology; []
    Keywords : phase transformations; plastic deformation; sliding contact; heat conduction modelling; low cycle fatigue; railway wheel steel Fe-0.5C-0.3Si-0.75Mn-0.05V ; austenitisation; transformation kinetics; heat treatment; friction;

    Abstract : The wish to increase loads and speeds of trains puts higher demand on construc¬tion, engineering and material than ever before. Therefore it is necessary to con¬tinuously develop technology to meet these increasing requirements. READ MORE

  5. 5. Simulation of welding and heat treatment : modelling and validation

    Author : Henrik Alberg; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Abstract : 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. READ MORE