Sökning: "steel production"

Visar resultat 11 - 15 av 352 avhandlingar innehållade orden steel production.

1. 11. Steel characteristics and their link to chip breaking and tool wear in metal cutting

   Författare :Niclas Ånmark; Andrey Karasev; Pär Göran Jönsson; Thomas Björk; Mikael Olsson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; machinability; steel; non-metallic inclusions; skärbarhet; stål; icke-metalliska inneslutningar; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : The vision of this thesis is to study how it is possible to obtain optimised workpieces during metal cutting processes in industry. Specifically, the work is aimed to increase the understanding between the steel characteristics and their link to the chip breaking and tool wear during metal cutting. LÄS MER

3. 12. Interaction between defossilisation of basic industries and relocation : Scenario-based explorative and normative transition pathways to electrification for European basic industries and specific clusters

   Författare :Clemens Schneider; Miljö- och energisystem; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel; petrochemicals; defossilisation; climate-neutral production; electrification; industry clusters;

   Sammanfattning : The steel and chemical production industries are the largest industrial emitters of greenhouse gases in the European Union, together accounting for half of the EU’s industrial greenhouse gas (GHG) emissions. A promising strategy for achieving deep GHG emissions reductions is the electrification of these two industries, which would depend on the rapid expansion of renewable electricity supply. LÄS MER

4. 13. Sustainable Aluminum and Iron Production

   Författare :Reza Beheshti; Emma Strömberg; Jafar Safarian; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sustainability; Optimization; Black Dross; Salt removal; Steel flux agent; Waste processing; Greenhouse gases; Direct reduction; COMSOL Multiphysics®; Kemi; Chemistry;

   Sammanfattning : Aluminium recycling requires 95% less energy than primary production with no loss of quality. The Black Dross (BD) produced during secondary aluminium production contains high amounts of water-soluble compounds, therefore it is considered as a toxic waste. LÄS MER

5. 14. Tool steel for tool holder applications : microstructure and mechanical properties

   Författare :Anna Medvedeva; Jens Bergström; Birger Karlsson; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tool steel; tool holder; microstructure; mechanical properties; machinability; Materials science; Teknisk materialvetenskap;

   Sammanfattning : Large improvements in cutting tool design and technology, including the application of advanced surface engineering treatments on the cemented carbide insert, have been achieved in the last decades to enhance tool performance. However, the problem of improving the tool body material is not adequately studied. LÄS MER

7. 15. Development of Structural Steels for Powder Bed Fusion - Laser Beam

   Författare :William Hearn; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tensile properties; in situ tempering; process development; martensite; additive manufacturing; cold cracking; low-alloy steel; structural steel; powder bed fusion – laser beam; carbon steel;

   Sammanfattning : Over the past decade, powder bed fusion – laser beam (PBF-LB) has attracted noticeable attention from both academia and industry. However, there remains a scarcity of approved material for the process, as fewer than 40 alloys are commercially available. LÄS MER