Search for dissertations about: "steel tapping"

Found 5 swedish dissertations containing the words steel tapping.

2. 1. Influence of Ladle-slag Additions on BOF-Process Parameters

   Author : Anders Dahlin; Pär G. Jönsson; Joel Gustavsson; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BOF; slag formation; ladle slag; recycling; steel; composition; energy; Metallurgical process engineering; Metallurgisk processteknik;

   Abstract : The influence of ladle-slag additions on the BOF-process performance were investigated in plant trials. The aim of the study was to recycle ladle slag from secondary steelmaking to the LD-converter to save lime and improve the slag formation. READ MORE

4. 2. Performance Testing of Cutting Fluids and Tool Holders in Metal Cutting

   Author : Varun Nayyar; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chip Microstructure; Torque; Drilling; Compressed air; Turning; Tool-holding; Force.; Tapping; Keyword: Cutting Fluid;

   Abstract : ABSTRACTThe metal cutting industry has evolved over the last century to the point where an increasing range and complexity of tool holding systems and cutting fluids are available for metal machining in the market. Most of the companies report their cutting fluid cost to be between 7 -17 % of the manufacturing cost. READ MORE

5. 3. Machinability Testing of Materials in Metal Cutting with Focus on Compacted Graphite Iron and Cutting Fluids

   Author : Varun Nayyar; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; UTS.; Boring; Drilling; Cutting Fluid; Turning; Milling; Force; Wear; Force; Torque; Compressed air; CGI; Hardness; Tool Life; Material Properties; Chip Microstructure; Tapping;

   Abstract : Due to the stringent demands for lower emission from trucks require better mechanical properties of the material to be used in the engines. Better efficiency necessitates higher peak pressure in the engines and for traditionally used material, Flake Graphite Iron (FGI), the mechanical properties starts to reach the limit of what the material can withstand. READ MORE

6. 4. Aspects on slag/metal equilibrium calculations and metal droplet characteristics in ladle slags

   Author : Johan Ekengård; KTH; []
   Keywords : ;

   Abstract : In the present work the mixing between the metal and slagphase during the ladle refining process from tapping from theelectric arc furnace to casting in two different Swedish steelplants has been studied.Three slag models and the sulphur-oxygen equilibrium betweenslag and steel was used together with the dilute solution modelfor the liquid steel phase to predict the equilibrium oxygenactivity in steel bulk and metal droplets in top slag inequilibrium with the top slag. READ MORE

7. 5. Abatement of Chromium Emissions from Steelmaking Slags - Cr Stabilization by Phase Separation

   Author : Galina Albertsson; Lidong Teng; Seshadri Seetharaman; Voicu Brabie; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spinel; slag basicity; oxygen partial pressure; chromium oxide vaporization; шпинель; шлак; парциальное давление кислорода; испарение оксидa хрома; 尖晶石; 炉渣碱度; 氧分压; 铬氧化物汽化; spinell; slaggbasicitet; syrepartialtryck; förångning av kromoxid;

   Abstract : Chromium is an important alloying element in stainless steel but also environmentally harmful element. A number of mineralogical phases present in the slag matrix can contain chromium and lead to chromium leaching. READ MORE