Open Access Conference Proceedings

Abstract: The surface of the polyester nonwoven fabric was covered with a layer of silver and copper-based nanoparticles obtained from their salts and reduced using tannic acid. Polyester nonwoven MILIFE® without surface modification was used as a carrier of the metallic layer. [..] Read more

Abstract: Composite nanofiber materials offer advanced properties and functions applicable in many fields, especially in medicine. Nowadays, these materials are mainly fabricated using the DC electrospinning technology with multi-spinnerets electrodes designed for such purpose. [..] Read more

Abstract: In this work, activated carbon (AC) web was prepared by using waste acrylic fibers followed by physical activation under the layer of charcoal in high temperature furnace. The carbonization of acrylic fibrous waste was performed at different temperature (800, 1000 and 1200 ◦C) with heating rate of 300 ◦Chr-1 and at different holding time. [..] Read more

Abstract: In the paper the results of investigation of drawing method including simple drawing and shear by computer simulation were presented. The simulation in Deform program was performed. [..] Read more

Abstract: Cold drawing is the final process of plastic deformation in the manufacture of precision steel seamless tubes. This particular technology is utilities by multiple drawing operations (sequences) with intermediate heat treatment. [..] Read more

Abstract: Due to the specific requirements for monitoring processes and products in the aircraft industry, non-destructive testing (NDT) is increasingly used in combination with advanced statistical analysis.The paper presents the results of research aimed at determining the quality of wax models and multi-layered ceramic forms, used for precise casting of critical parts of aircraft engines. Studies on the shape and dimensions of wax models and ceramic moulds were made by 3D scanning using the GOM ATOS CORE 200 scanner. [..] Read more

Abstract: Currently, model study is commonly used part of research in field of metallurgical processes. Process of simulation of casting and solidification of steel ingots is no exception. [..] Read more

Abstract: The article describes the state of the art computer simulation in the field of metal forming processes the main problem points of traditional methods were identified. The method, that allows predict the deformation distribution in the volume of deformable metal with taking into account of microstructure behavioral characteristics in deformation load conditions, was described. [..] Read more

Abstract: Using pulsed current at manual metal arc welding represents a new research idea perspective and provocative for major manufacturers of welding equipment. The concept is based on the ability to control the volume of welding pool at low frequencies of the pulses, below 5 Hz.Experimental research underlines the beneficial influence of pulsed current welding on weld geometry for butt joints. [..] Read more

Abstract: Since the use of cold-rolled steel sections is a standard method in mechanical engineering and steelwork and cost efficiency is always a big issue, it is of great interest to address the highly non convex problem of cross-section optimisation. At a first glance classic genetic algorithms already seem to be suitable for this problem, because they are powerful search heuristics for solutions in non convex problems. [..] Read more

Abstract: Martensitic heat-resistant steel P92 belongs to very progressive group of 9-12% Cr steels modified with vanadium and niobium, with controlled boron and nitrogen content. P92 has got excellent creep properties and it is used very often to build the most exposed parts of supercritical units in steam power plants.The goal of this article is to compare the real welded joints with the simulated samples and to optimize the heat treatment and welding process of P92 steel. [..] Read more

Abstract: Although the requirements on quality of products are increasing, most companies still pays little attention to product quality planning. Furthest in this direction they are automotive suppliers, which include most of metallurgical companies, which use quality planning methodologies developed for this industry area and which must within the framework of production part approval process submit evidence about successful products and processes quality planning. [..] Read more

Abstract: The conditions of enterprises operation in steel sector for the globalization era are constantly changing. In line with its ambition to strengthen its competitive position it is necessary to look for sources of competitive advantage. [..] Read more

Abstract: The present study was conducted to identify simultaneously economic, environmental and social conditions that should be considered when deciding to cooperate with the supplier. This integrated approach allowed, besides identifying the validity of individual criteria, noting the relationship among a group of economic, social and environmental criteria. [..] Read more

Abstract: One of the main problems companies have to solve is the distribution of resources among the potential beneficiaries. In many cases, this problem can be presented as a linear programming task with a linear objective function and constraining conditions. [..] Read more

Abstract: With growing pressure for wide application of silver nanoparticles, the methods of their production have become increasingly important. Moreover, repurposing waste has been a globally acknowledged trend in the context of circular economy approaches in recent decades. [..] Read more

Abstract: The aim of the article is to show the use of artificial intelligence in improving the heating process in continuous industrial furnaces. To improve the heating in continuous furnaces, heating control based on models that consider the dimensions, material, and heating method can be used. [..] Read more

Abstract: In the last years, immiscible alloys have gained significant attention, mainly due to the use of their immiscible nature for the preparation of new advanced multiphase alloys. Most of these alloys are based on the Cu-Fe system. [..] Read more

Abstract: The article presents results of tests concerning the metal-mineral abrasive wear resistance of arc-sprayed coatings with lower and higher air pressure (larger and smaller drops of metal) and HVOF-sprayed coatings deposited using the self-shielded flux cored wire providing the obtainment of the weld deposit of high-chromium cast iron Fe15 (in accordance with EN 14700). The significance of influence of the spraying technologies on abrasion resistance was determined using a completely randomized design. [..] Read more

Abstract: Arthrospira platensis (spirulina) is known for its high biological activity, including antioxidant, anti-inflammatory, and antiviral properties. In recent years, spirulina polysaccharides have been actively researched in fields such as tissue engineering, targeted drug delivery, and wound healing. [..] Read more