Sökning: "iron and steel industry"

Visar resultat 16 - 20 av 70 avhandlingar innehållade orden iron and steel industry.

1. 16. Optimisation of Machining Operations by means of Finite Element Method and Tailored Experiments

   Författare :Amir Malakizadi; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Usui wear model; Bi-metals; Flank wear; Johnson-Cook; Inverse identification; Metal cutting; Thermal fatigue cracking; Wear modelling; Finite element method; Response surface methodology;

   Sammanfattning : Traditionally, costly experimental procedures have been followed in industry to optimise the machining operations to secure the maximum efficiency in production line, while the functional requirements of the machined surfaces are fulfilled. In recent years, development of robust numerical techniques such as Finite Element Method (FEM) and advances in computing capacity of computers have made it possible to simulate the machining operations under operational conditions. LÄS MER

3. 17. Steel Beyond Coal : Socio-Technical Change and the Emergent Politics of Steel Decarbonisation

   Författare :Valentin Vogl; Miljö- och energisystem; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel; coal; climate change; decarbonisation; socio-technical transitions; sustainability;

   Sammanfattning : The steel industry is responsible for 8% of all anthropogenic greenhouse gas emissions and is the second largest user of coal after the power sector. The main emission source in steel production is the blast furnace, which converts iron ore and metallurgical coal into pig iron that is then further refined into steel. LÄS MER

4. 18. 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

5. 19. Recycling of metallurgical by-products within integrated iron and steelmaking : experimental studies of cold bonded by-product pellets

   Författare :Ryan Robinson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

   Sammanfattning : In recent years as costs for depositing dust and sludge generated in the iron and steel making industry have increased, due to lack of space and increasing environmental restrictions, the need to recycle these solid by- products to avoid depositing costs and to recover valuable metal fractions, is soon becoming a necessary reality. Cold bonded agglomeration is considered to be a well-suited alternative for recycling of steel industry by-product dust and sludge. LÄS MER

7. 20. Järnhanteringens dynamik : Produktion, lokalisering och agglomerationer i Bergslagen

   Författare :Fredrik Olsson; Olle Krantz; Dan Bäcklund; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; iron industry; agglomerations; clusters; regions; parishes; localisation; early modern; regional industrialisation; employment structure; iron production; bar iron export; Sweden; Bergslagen; Central Sweden; Economic history; Ekonomisk historia;

   Sammanfattning : Abstract This thesis explores early modern industrial dynamics and especially the long-term performance of iron production and its localisation in Central Sweden during the period 1368-1910. Iron production, iron export and localisation in a national perspective as well as the regional industrial development in Central Sweden during the period 1805-1910 are studied. LÄS MER