Sökning: "Ersson Mikael"
Visar resultat 11 - 15 av 16 avhandlingar innehållade orden Ersson Mikael.
11. Development Towards Sustainable Ironmaking : The IronArc Process
Sammanfattning : The IronArc process is a novel process for a more sustainable production of liquid pig iron using electricity for heating and hydrocarbons for reduction. This thesis aims to facilitate its use by investigating possible refractory solutions and the gas blowing in the process which is done by a plasma generator. LÄS MER
12. Some Aspects of Improving Initial Filling Conditions and Steel Cleanliness by Flow Pattern Control Using a Swirling Flow in the Uphill Teeming Process
Sammanfattning : The flow pattern has widely been recognized to have an impact on the exogenous non-metallic inclusion generation in the gating system and mold flux entrapment in the uphill teeming process. Thus, a well-controlled flow pattern during the teeming process can improve the quality of ingots and further increase the yield during steel production. LÄS MER
13. A Study of Bubble and Inclusion Behaviors in a Liquid Steel Bath
Sammanfattning : The bubble formation processes in a water model experiment were measured by a high-speed camera. Nozzle diameters of 0.5 mm, 1 mm and 2 mm were investigated under both wetting and non-wetting conditions. LÄS MER
14. A study of bubble behaviors in a liquid steel bath
Sammanfattning : The fundamental aspects of rising argon bubbles in molten metal flow were investigated by numerical simulations. The process of a bubble rising in the molten metal includes two steps, one is the bubble rising inside the liquid, and the other one is the bubble rising across the liquid surface. LÄS MER
15. A study of mold flux entrapment and gas entrainment in an ingot casting process
Sammanfattning : The focus of this work is to study the gas entrainment and mold flux entrapments during the ingot filling process based on physical and numerical modelling.The formation of the free surface was investigated in the uphill teeming method, which illustrates a dynamic change at a quasi-steady state. LÄS MER