Essays about: "Steel"

Showing result 1 - 5 of 796 essays containing the word Steel.

  1. 1. Sample quality effects of laser cutting : An empirical study on the heat affected zone and the surface quality in laser cut samples

    University essay from KTH/Materialvetenskap; KTH/Materialvetenskap

    Author : Emma Bevin; Matilda Björklund; [2020]
    Keywords : Laser cutting; Laser cutting quality; Heat affected zone; Surface quality; Surface angularity; Laserskärning; Laserskärnings-kvalité; Värmepåverkad zon; Ytkvalité; Ytvinkel;

    Abstract : This study has been conducted with the aim to examine the extent of the heat affected zone in order to use laser cutting when making samples for tensile testing. When cutting with a laser the material absorbs heat energy from the laser beams which causes changes in the microstructure. READ MORE

  3. 2. High temperature tribological evaluation of a self-lubricating laser cladding with and without external solid lubricant

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Cecilia Nemeth; [2020]
    Keywords : high temperature tribology; hot metal forming of aluminium; self-lubricating laser cladding; external solid lubricant;

    Abstract : The purpose of the project work was to build knowledge of the tribological behaviour of self-lubricating laser cladding, with and without external solid lubricant during conditions relevant for hot metal forming of aluminium. The materials used during the project were plates coated with a Ni-based self-lubricating clad and a reference sample of work tool steel. READ MORE

  4. 3. Assessment of the environmental impacts, energy performance and economic aspects of various construction materials

    University essay from Lunds universitet/Energi och ByggnadsDesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

    Author : Mohsen Bayat Pour; Mohammed Labib Elsayed; [2020]
    Keywords : Bio-based Materials; Fossil-based Materials; Building Performance Simulations; Energy analysis; Environmental impact categories; Life cycle assessment LCA ; Economic analysis; Life cycle costing LCC ; Global warming potential; Climate change; Future climate analysis; Timber structure; Concrete structure; Insulation; HVAC systems; Heating demand; Cooling demand; Energy use; Hygrothermal analysis; Moisture; Thermal envelope; Thermal comfort; Indoor environmental quality; Actual case studies; Iterative workflow; Weather files; Parametric study; Reliability; Single-point rate SPR .; Technology and Engineering;

    Abstract : Increasing CO₂ emission is considered as the main reason for global warming in the world. One of the reasons for producing CO₂ is using of fossil-based materials in the construction projects. READ MORE

  5. 4. Acid retardation : recovery and recycling of acid and metal

    University essay from Luleå tekniska universitet/Industriell miljö- och processteknik

    Author : Cecilia Bood; [2020]
    Keywords : Acid retardation; Ion exchange; Pickling; Stainless steel;

    Abstract : During the production of steel, an oxide scale is formed on the surface and to achieve anadequate quality of the surface the scale needs to be removed. Acid pickling is a surfacetreatment where the oxide scale is removed by acid. READ MORE

  6. 5. Carbon capture from reheating furnaces in the Swedish steel industry : evaluation of techno-economic feasibility

    University essay from Luleå tekniska universitet/Energivetenskap

    Author : Anna Haglund; [2020]
    Keywords : Carbon capture; CCS; Swedish steel indusrty; post-combustion;

    Abstract : The reduction of greenhouse gas emissions is important to keep climate change under control. One of the largest CO2 emitters of the Swedish industries is the steel industry. This is, among others, due to the need of heat treatments and reheating processes depending on high temperatures and fossil fuels. READ MORE