Open Access Conference Proceedings

Abstract: Currently, biosoluble materials are widely used for the manufacture of implants, among which the most promising are magnesium alloys. Magnesium is a natural element of the body - it is contained in bone and muscle tissue, is involved in various metabolic processes. [..] Read more

Abstract: The aim of the paper is to analyze and describe current knowledge and application of agile methods, tools and techniques in foundries in Czech and Slovakian foundries. The motivation of the research is increasing need of customer-focused management and competitiveness. [..] Read more

Abstract: This work deals with the utilization of waste heat of steel plants to generate electricity, using Stirling engine. It also deals with the design and connection of Stirling engine in the stack of metallurgical plant to utilize the waste heat energy to generate electricity. [..] Read more

Abstract: The aim of the manufacturing company is not only to innovate the production process in order to reduce production costs on the one hand and increase production on the other, but also to increase the resulting quality of products, which, with an increasing the level of quality of manufactured products, eliminates the costs associated with complaints (if any), increases the competitiveness of the manufacturing company in the markets and brings higher demand for products due to higher quality. This innovation of improving the quality of products has been neglected to a large extent in current trends, as great emphasis is placed on increasing productivity while reducing costs, and even brings with it the opposite effect, which is the above-mentioned costs of complaints and the associated outflow of customers. [..] Read more

Abstract: The metallurgy includes the oldest branch of technology and science of the humanity. Connected to this, the evolution of the technical installation, thermal or mechanical, has followed a similar impressing path. [..] Read more

Abstract: In recent years, global and domestic market demands for quality steel were on the increase. Combined with the strict legislation of the European Union and its ambitious plan to reach carbon neutrality by 2050, this created pressure in the metallurgical sector, necessitating innovation and optimization of its current processes. [..] Read more

Abstract: The paper contains new knowledge about the expansion of technologies associated with Industry 4.0 and digitalization in selected companies including metallurgical companies in the Czech Republic and evaluates the intensity of business process innovation with a focus on internal processes implemented in companies. A probe was implemented which was purposefully focused on the analysis of statistical data on innovation activities in innovative companies including metallurgical companies in the Czech Republic in the period under study by. [..] Read more

Abstract: Even in the production of steel, the quality of the final product depends on the quality of the raw material used for its processing. One of the raw materials that is put into steelmaking furnaces is also steel scrap. [..] Read more

Abstract: Large volumes of slags are formed as by-products during the refinement of pig iron and steel manufacturing. Generally, the steel slag (steel furnace and ladle furnace slags) contains an appreciable amount of magnetic substances such as metallic iron and magnetic iron oxide, and thus, they can be recycled by wet magnetic separation. [..] Read more

Abstract: The subject of this paper is the analysis of phase transformation temperatures, specifically liquidus temperature (TL) for steel quality 41Cr4. To calculate the temperatures, 66 different variants of the chemical composition of a given steel grade were compiled. [..] Read more

Abstract: The article will deal with the determination of austenite decomposition temperatures using the available SW FactSage. The determination of austenite decomposition temperatures is one of the basic information that can provide the technologist and subsequently help to change the properties of steel during steel processing. [..] Read more

Abstract: The paper compares classical models for determining the thermophysical properties of steels based primarily on empirical equations derived using linear regression methods with models created using machine learning methods. The selected investigated quantities include phase transformation temperatures, specific heat capacity, coefficient of thermal expansion. [..] Read more

Abstract: The presented paper deals with a numerical simulation of casting and solidification of a 65-ton ingot made of 25CrMo4 low-alloy chrome-molybdenum steel. The aim was to focus on the assessment of steel melt flow, the risk of formation of microporosity and segregation according to Niyama or Suzuki criteria respectively, solidification. [..] Read more

Abstract: Modifying liquids with nanoparticles is widely recognized as a practical approach for improving their heat transfer characteristics without significantly increasing viscosity. This work examines the effect of adding hematite and acid-leached blast furnace sludge particles on the rheological and thermal properties of deionized water. [..] Read more

Abstract: The search for possibilities of slags utilisation, produced by various metallurgical plants, is relevant mainly due to its connection with circular economy and environmental protection. Using slags in construction or other fields of the industry is closely related to their properties and behaviour in contact with water. [..] Read more

Abstract: The practice of using electroslag remelting for processing spent non-compact tools from high-speed grade steel is considered. The advantage of the remelting process according to the two-circuit scheme for that purpose is demonstrated. [..] Read more

Abstract: Presented paper deals with the technology of production of ductile iron on industrial scale. Particularly, the material in question is EN-GJS-400-18-LT, which is suitable for castings intended for extreme conditions. [..] Read more

Abstract: This paper describes the numerical modelling of solidification of ductile iron castings intended for the shipbuilding industry. Numerical simulations we performed in the computer software MAGMASOFT®. [..] Read more

Abstract: The article deals with numerical simulations of filling and solidification of ductile iron castings produced in the MOTOR JIKOV Slévárna (Foundry). The simulations we performed in the ProCAST simulation software. [..] Read more

Abstract: At present, cast iron foundries are facing increasing competition along with increasing demand for ductile iron. Therefore, there is no other way than to improve the technological processes of casting production and use other possibilities for more efficient management of their quality by means of 3D scanning of dimensional accuracy in critical production nodes.The paper is based on the gained experience with the study of the potential of the method of non-contact 3D measurement of shape and dimensional accuracy of the patterns and castings, which is to be used in optimizing the process parameters of gravity casting of ductile iron castings.The ROMER Absolute Arm 7525SI portable laser measuring arm is used. [..] Read more