Open Access Conference Proceedings

Abstract: Titanium aluminide alloys are considered to be attractive materials for aerospace and automotive high-temperature applications due to their high specific strength, creep resistance, and heat resistance. However, their brittleness makes it difficult to manufacture complex-shaped components of these alloys using conventional processes making additive manufacturing a promising way to produce titanium aluminide parts. [..] Read more

Abstract: As part of the work, an alternative environmentally friendly technology for water treatment of natural waters was proposed and tested, based on the combined use of hydrodynamic water treatment and ultrafiltration on ceramic membrane filters. The hydrodynamic characteristics of the treated water flow have been determined to achieve the maximum intensification of the oxidation processes of ferrous iron and manganese ions without the use of additional air ejection. [..] Read more

Abstract: This investigation was carried out to determine the wetting characteristics of low alloy steel grades that contained, among other elements, chromium around 5 wt.% and oxygen up to approximately 400 ppm. The tests were performed from the melting temperature to a temperature of 1,600 °C using a high-temperature observation furnace CLASIC operating under non-oxidizing conditions. [..] Read more

Abstract: When designing blowing systems for a high-temperature reactor, we can primarily use mathematical tools that allow us to determine the state quantities of the flowing medium using a calculation. In many cases, however, it is necessary to verify these calculated quantities, e. [..] Read more

Abstract: Electric arc furnaces (EAF), especially of foundry class, operating with a long-term technological period, are characterized by a high level of energy loss. Intensification of heat and mass transfer in steelmaking bath by pneumatic or electromagnetic (EMS) stirring contributes to increase energy efficiency of the EAF. [..] Read more

Abstract: The paper analyses the magnitude of foundry stresses in cast iron and steel castings. For the analysis of foundry stresses, a new methodology for measuring the level of residua! stresses on modified test bodies was proposed to test the propensity of iron alloys to hot-cracks and cold-cracks. [..] Read more

Abstract: The paper presents the results of investigation concerning the strength properties of the vermicular and the nodular cast iron both in the as-cast state and after the heat treatment held according to a couple of various options. The nodular cast iron exhibited almost 100% nodular graphite precipitates and the purely pearlitic matrix. [..] Read more

Abstract: The paper presents analysis of phase transformation temperatures of 20MnCr5 steel. For calculations of required temperatures, i.e. [..] Read more

Abstract: The paper deals with the possibility of thermodynamic analysis of CaO - SiO2 - Al2O3 - MgO slag system for optimizing of steel desulphurization in a ladle. From the point of view of reducing the sulphur content in steel, the chemical composition of the slag plays a crucial role which affects a critical thermodynamic parameter of the slag, such as the liquidus temperature of the slag, the amount of solid phases in slag at range of refining temperatures, respectively the effective viscosity of slag and CaO saturation in slag. [..] Read more

Abstract: A popular way in applying to identify incompatibilities of a product are non-destructive testing (NDT). However, this research is not allowed to identify the causes of incompatibilities. [..] Read more

Abstract: The magnetic properties of polycrystalline samples of isotopically enriched iron with the content of isotope 56Fe 99.945±0.002 at. % were investigated at different magnetic field strength values. [..] Read more

Abstract: The production of High carbon ferromanganese industry worldwide is facing gigantic challenges due an ever-increasing production cost that is mainly due to the yearly increase of electricity and the depletion of metallurgical coke. The power supply in some part of the world has become a challenge therefore impacting the productivity and slowing the growth of economies. [..] Read more

Abstract: During last decades, extracting value-added products from industrial waste materials became a crucial research area because it not only provides valuable products but also mitigates the problem with disposal of these wastes and, at the same time, it facilitates saving natural resources. Various dense media for industrial separations are based on a variety of raw materials or commercially manufactured materials, such as clay, quartz, slate, galena, magnetite or ferrosilicon. [..] Read more

Abstract: The specific heat capacity of substances is one of the determining thermal technical properties of technical materials such as steels influencing their heating or cooling. Knowledge of their values is necessary for accurate calculations of processes such as solidification during casting in the form of continuously cast billets or ingots and during heating before forming processes or during heat treatment of finished products. [..] Read more

Abstract: The submitted article deals with the study of casting and solidification of a 12 t ingot made of structural steel 42CrMo4 using numerical simulations in the THERCAST® and MAGMASOFT® software. The possibilities of each individual software in filling and solidification of steel were assessed, including the prediction of ingot defects such as porosity, shrinkage cavities or shrinkage porosities; the proportion of liquid phase, segregation of selected elements and solidification time were also monitored.. [..] Read more

Abstract: Metallurgical slags originating during pig iron and steel manufacturing, are valuable sources of the inorganic materials. The limitation of their recycling is usually connected to the expensive methods of the separation of the components. [..] Read more

Abstract: The presented paper focuses on numerical modelling of temperature fields of a continuously cast billet. The ProCAST software system, which is based on the finite element method, was used as a simulation tool. [..] Read more

Abstract: This paper is devoted to the presentation of initial results focused on the optimization of numerical simulations of gravity casting of ductile iron castings into non-permanent bentonite molds. Numerical simulations were performed focused on the course of filling the mold and solidification of the casting by simulation SW ProCAST. [..] Read more

Abstract: This paper studies the possibility of producing ductile iron castings intended for extreme conditions on an industrial scale. The preparation of charge and its melting conditions, modification, primary inoculation and main inoculation were studied within extensive series of experimental melts. [..] Read more

Abstract: This article is focused on the optimization of the flow of steel in a symmetrical three-strand T-shaped tundish based on the change of its internal equipment. Since the investigated tundish has three outlet strands, it is very important to properly adjust its internal volume to achieve optimal flow and final steel purity. [..] Read more