Sökning: "Pär Jönsson"
Visar resultat 21 - 25 av 111 avhandlingar innehållade orden Pär Jönsson.
21. An Experimental Study of a Liquid Steel Sampling Process
Sammanfattning : During the steelmaking process samples are taken from the liquid steel, mainly to assess the chemical composition of the steel. Recently, methods for rapid determination of inclusion characteristics (size and composition) have progressed to the level where they can be implemented in process control. LÄS MER
22. An Experimental Study of Liquid Steel Sampling
Sammanfattning : Sampling of liquid steel to control the steel making process is very important in the steel industry. However, there are numerous types of disposable samplers and no united standard for sampling. The goal in this study is to investigate the effect of slag protection type and sample geometry on sampling parameters and sample homogeneity. LÄS MER
23. Fundamental Experimental and Numerical Investigation Focusing on the Initial Stage of a Top-Blown Converter Process
Sammanfattning : The aim of this thesis work is to increase the knowledge of phenomena taking place during the initial stage in a top blown converter. The work has been done in a few steps resulting in four different supplements. Water model experiments have been carried out using particle image velocimetry (PIV) technology. LÄS MER
24. A Study of Top Blowing with Focus on the Penetration Region
Sammanfattning : .... LÄS MER
25. Evaluation of Non-Metallic Inclusions after Deformation and Their Effect on the Machinability of Steel
Sammanfattning : The presence of non-metallic inclusions (NMIs) have critical effects on both the mechanical properties and machinability of steels. In the present thesis, one focus is to study the characteristics of deformed sulfides (MnS) for a stainless steel (3R65) and a tool steel (42CrMo4). LÄS MER