Open Access Conference Proceedings

Abstract: Through the rising amount of hydrogen in natural gases provided by the suppliers technical questions about the process control based on the off-gas composition as well as about the supply of the necessary process heat come up. But also the hydrogen solubility plays a significant role in many processes in which solid or liquid metals like copper are produced. [..] Read more

Abstract: Welding of components processed by additive manufacturing (AM) to conventionally produced components become important for industrial applications. Among AM production methods, selective laser melting method provides number of advantages such as use of various type of materials, increased functionality, relatively low cost and the production of smooth surface components ready to use.Within the scope of this study, preliminary research studies were carried out to demonstrate the feasibility of similar and dissimilar friction stir welded AlSi10Mg plates produced by selective laser melting. [..] Read more

Abstract: The paper presents the possibilities of using unit load AGVs for handling parts in a welding shop. One of the key success factors of this technology implementation is the full automation of handling operations in front of welding lines and workplaces. [..] Read more

Abstract: The aim of the paper is to present educational model for increasing agility of metal industrial companies. Education and development of knowledge of agile principles is a key element and prerequisite for successful implementation of agile principles in project portfolio management. [..] Read more

Abstract: The preparation of the charge for steelmaking furnaces is a key area from the point of view of the quality of the produced steel. One of the most important components of the charge is the treated steel scrap (in general, you can say metal waste). [..] Read more

Abstract: This article presents a technological issue related to the operation of self-baking electrodes in six-electrodes submerged arc furnaces during the process of smelting high-grade silicon alloys with iron and other elements by carbothermal reduction, carried out in Re Alloys ferroalloys plant. Particular attention is paid to technological problems related to the use of Søderberg electrodes during start-ups of electric furnaces after shutdowns. [..] Read more

Abstract: AISI H13 is commonly used for tooling, where higher wear resistance, thermal fatigue resistance, or hot toughness is required. Such examples include forging dies, plastic molds, hot shear blades, high-pressure die casting, and extrusion dies. [..] Read more

Abstract: The basic procedure of secondary metallurgy is blowing liquid steel with inert gases. This treatment is applied in the ladle at the ladle furnace station. [..] Read more

Abstract: Achieving a balance between strength, toughness and technological properties of cast iron requires knowledge of the relationships between local and macroscopic failure processes. High toughness is conditional upon the substantial dissipation of deformation energy during crack propagation and the initiation of ductile failure. [..] Read more

Abstract: To meet the increasing cleanliness requirements in conticast steel production, innovative solutions must be developed. The tundish, which serves as the final refractory-lined reactor, provides ample space to eliminate inclusions through optimization of the steel flow. [..] Read more

Abstract: This research article introduces a methodology for studying the operational wear of experimental shaped parts of moulds for high-pressure die casting (HPDC) of zinc alloys. The study includes roughness analysis and geometric dimensioning and tolerancing (GD&T) based on a coordinate measuring machine (CMM) and 3D scanning to quantify the wear of the mould parts due to contact with the zinc alloy melt and solidifying castings during the HPDC process cycles. [..] Read more

Abstract: One of the factors influencing the surface quality of castings is the resulting thermal expansion when silica sands are used. This is characterised both by its high value compared to other non-silica sands, and by its typical discontinuous behaviour, leading in many cases to defects such as veining or increased surface roughness, which further lead to increased costs of processing the castings or, in extreme cases, to scrap pieces. [..] Read more

Abstract: The influence of varying thermal treatment conditions on reducing zinc and lead content from a steelmaking sludge was studied. The Waelz process in a laboratory rotary kiln was used for the experiments. [..] Read more

Abstract: The present paper describes a method for processing experimental data obtained on a physical model of a refining unit, the Foundry Degassing Unit (FDU). For different refining gas flow rates and rotor rotation speeds of the FDU, the concentration of oxygen removed was measured depending on time. [..] Read more

Abstract: This article aims to obtain new and unique knowledge in the field of additively manufactured shaped mold parts within their operational application in high-pressure casting of aluminum alloy castings. Part of the work is the mapping of the service life of conventional and additively produced shapes parts of molds. [..] Read more

Abstract: The main topic discussed in this work is the reduction of hydrogen content in high grades of steel for the production of seamless pipes using processes of secondary metallurgy and vacuum degassing. The aim of thispaper is the statistical analysis of operational data with a follow-up to the preparation of a statistical model for calculating the final hydrogen content in steel after processing in a vacuum. [..] Read more

Abstract: Equal-channel angular pressing (ECAP) is one of the main ways of refinement the structure of metals into a fine-grained and nanostructured state. Regardless the great prevalence and high knowledge of the method, the issues of optimization and improvement of the design and geometry of the working tool still relevant. [..] Read more

Abstract: In the paper, the author presented the technological assumptions for the production of a helical metal expansion joint. Currently produced expansion joints have bellows or lens shapes. [..] Read more

Abstract: Complex concentrated alloy (CCA) with nominal composition (CoCrFeNi)92.5Al3Ti4.5 (in at.%) was prepared by vacuum induction melting in a ceramic crucible and tilt cast into the cylindrical ceramic mould. The alloying elements such as Al and Ti were added to the basic quaternary CoCrFeNi system to promote the formation of L12 phase in the FCC (face - centered cubic) matrix during heat treatments. [..] Read more

Abstract: The authors presented the ideas and assumptions with regard to manufacturing and application of a new kind metal expansion joints. Mechanically assisted laser forming manufacturing technology was briefly discussed. [..] Read more