Seznam abstraktů 2022: POSTEROVÁ SEKCE F
Datum: 19.5.2022
The paper deals with the processes of digitization of metallurgical processes, its possibilities and limitations caused by the specifics of these operations. Digitization is the process of introducing the use of digital technologies in various areas of production and society. In general, digitization seeks opportunities based on digital technologies that streamline and improve the operation of processes and services. Most companies, and therefore also in metallurgy, are today overwhelmed by a number of routine, often repetitive activities and processes. They often consume valuable (and expensive) human resources, which then do not have time for conceptual work with higher added value.
The aim of this study was to evaluate metals and materials application in hydrogen fuel-cell technologies in vehicles based on life cycle assessment In the paper the some technologies: polymer-electrolyte-membrane fuel cells, solid-oxide fuel cells, polymer-electrolyte-membrane water electrolysers and alkaline water electrolysers will be evaluated. The most common type of fuel cell for vehicle applications is a polymer electrolyte membrane fuel cell. In the polymer electrolyte membrane fuel cell, an electrolyte membrane is sandwiched between cathode and anode. The analysis will show the metals and critical materials that substantially increase the environmental impact of hydrogen fuel-cell technologies. At the work will be identified and analyzed metals and materials which are potential for fuel cell technologies.
The research objective was to diagnose aluminum gearbox castings using the proposed diagnosis methodology and pro-quality analysis. The study identified the most severe non-conformity (in terms of frequency of occurrence and its consequences) - the sandblasting within the casting base. The presence of forming compounds in the liquid melt contributing to the most severe non-conformity was identified as the critical cause of the loss of quality stability of the process. So far, no pro-quality analyses have been performed in the company using a sequence of quality management methods. As a result, the implemented corrective actions have not led to the full achievement of quality objectives, which indicates the validity of the actions taken. Combining the analysis of types of nonconformities and quality management methods is a universal way to facilitate supervision and ensure appropriate product quality. Further studies will refer to the performance of pro-quality analyses for other products offered by the company.
The successful management of product incompatibility remains a challenge. Therefore, the study aims to analyze the possibilities of effective management through qualitative analyses. The sequence of two quality management techniques added to the fluorescent method used was proposed. These techniques were the Ishikawa diagram and the 5Why method. For a specific incompatibility example identified by using the penetration tests (the fluorescent method), the causes of these incompatibilities were searched using the Ishikawa diagram and the 5Why method. An example of analysis was the linear indication problem on the product surface, the gasodynamic sealer. By supplementing the penetration method, the proposed sequence of selected quality management techniques has shown that it is possible not only to detect incompatibilities but also to identify the source cause. In turn, finding the source cause can allow proposing the improvement actions. The proposed solution can also be used in other quality problems and other enterprises to improve the production processes.
Based on the samples of Shanghai and Shenzhen listed companies in China's steel industry from 2010 to 2020, this paper establishes a fixed effect model to analyze the influence of heterogeneous human capital on firm value. The results show that the knowledge-based human capital have no significant positive impact on the firm value of steel enterprises, but the technology-based human capital has a significant impact on them. Therefore, compared with knowledge-based human capital, steel enterprises should pay more attention to the accumulation of technology-based human capital in the process of development to promote the improvement of firm value.
The iron and steel industry plays an important role as a supplier to many other industries on an international scale. Given the strong dependence of economies on its products, maintaining its sustainability is essential. In addition to material and energy inputs, which are the biggest problem for companies in view of the conflict in Ukraine and sanctions against Russia, it is a long-term problem for companies not only to obtain qualified and already unskilled human resources from the metallurgical sector. Therefore, in recent years, there has been a more intensive replacement of people by technology and a related change in the optimal structure of employees. The article presents a comparison of statistics on the structure of employees in metallurgical companies from EU countries.
The paper deals with the application of automatically controlled vehicles in the metallurgical industry. The aim of the paper is to present a proposal for innovative safety of operating workers in the vicinity of an automatically controlled fire truck during the production of coke. The introductory part of the paper will be devoted to the explanation of the concept of automatically controlled vehicles, their possibilities, areas of their application and specifics in the field of metallurgical operations.
The main part of the paper will be devoted to the creation of a proposal to ensure safety in the track area of an automatically controlled fire truck during the production of coke. Security designs using optical barrier fencing and control using PLC Simatic series S7-1200 will be presented. Visualization and control of fencing provided by the visualization program Promotic. The second way of innovative security is the use of a machine vision system using operational cameras on a fire truck. An algorithm based on environment color filtering with subsequent detection of operational workers will be introduced. The algorithm was tested on real camera recordings from the coking plant's operating environment.
This paper takes China's listed iron and steel corporations from 2016 to 2020 as samples to discuss the relationship between "corporate environmental responsibility and corporate value", and analyzed the moderating effects of the nature of corporate ownership and industry concentration on the above relationship based on the resource dependence theory. This study found that iron and steel corporate actively fulfilling environmental responsibility could improve corporate value in the context of cutting overcapacity and green transformation of China's iron and steel industry.