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1
Content available Measurement Methods for Flux Residue Quantity after Controlled Atmosphere Brazing of Aluminum Coolers
Nadolny Sławomir, Hamrol Adam, Rogalewicz Michał, Piasecki Adam
Management and Production Engineering Review
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2023
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Vol. 14, No. 3
156--163
EN
The Controlled Atmosphere Brazing (CAB) process together with NOCOLOKr flux is associated with the occurrence of potassium fluoroaluminate residue inside the cooler. Excess of this flux residue is known to cause gelation of the coolant, which deteriorates the efficiency of the cooler. The flux residue amount is most often measured via Atomic Absorption Spectroscopy (AAS), in accordance with DIN ISO 9964-3. This is a time-consuming measurement that requires the use of specialized equipment and costly solvents. The following article presents two innovative methods for flux residue measurement after CAB process. They include Scanning Electron Microscopy (SEM) with Energy-Dispersive X-ray Spectroscopy (EDS) and Reflected Light Microscopy (RLM) with Differential Interference Contrast (DIC) module. The accuracy of these methods has been compared to the reference AAS method to evaluate their potential as alternative, less expensive, and quicker measurement methods for determining the quantity of flux residue.
2
Content available Minimizing the emission of material waste in the production process of batteries
Kujawińska Agnieszka, Hamrol Adam, Brzozowski Krzysztof
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2022
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Vol. 70, nr 6
art. no. e144049
EN
Contemporary societies are strongly dependent existentially and economically on the supply of electricity, both in terms of supplying devices from the power grid, as well as the use of energy storage and constant voltage sources. Electrochemical batteries are commonly used as static energy storage. According to forecasts provided by the Environmental Protection Agency at the global and EU level, in 2025 lead-acid technologies will continue to dominate, with the simultaneous expansion of the lithium-ion battery market. The production, use and handling of used batteries are associated with a number of environmental and social challenges. The way batteries influence the environment is becoming more and more significant, not only in the phase of their use but also in the production phase. The article presents how to effectively reduce the environmental impact of the battery production process by stabilizing it. In the presented example, the proposed changes in the battery assembly process facilitated the minimization of material losses from 0.33% to 0.05%, contributing to the reduction of the negative impact on the environment.
3
Content available Risk Assessment of Individualized 3D Printed Prostheses Using Failure Mode and Effect Analysis
Górski Filip, Sahaj Natalia, Kuczko Wiesław, Żukowska Magdalena, Hamrol Adam
Advances in Science and Technology. Research Journal
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2022
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Vol. 16, no 4
189--200
EN
Risk analysis of personalized medical devices, such as prostheses, is a challenging task due to the complexity of technological and geometrical issues. The paper undertakes a process of risk analysis for upper limb prostheses for adult patients, individualized by 3D scanning and produced by additive manufacturing. The analysis was performed to systematize the process and its steps, as well as diagnose certain problems, in order to achieve future devices with correct fit and function, produced in as few iterations as possible. The Failure Mode and Effect Analysis of Process (PFMEA) method was used. In the results, main process risks were identified: the problems are mostly caused in stages, where operator’s decision or activity is to be performed, regarding socket length, offset and suitable lining. The main prevention activities were determined – human involvement in the decision process should be minimal and the intelligent models should be adjustable to as many patient cases as possible. In consequence, future steps for process optimization were determined – larger base of patient cases is necessary to acquire and study, to gather data for model and process improvement.
4
Content available Mechanical properties and geometric accuracy of angle-shaped parts manufactured using the FFF method
Kuczko Wiesław, Hamrol Adam, Wichniarek Radosław, Górski Filip, Rogalewicz Michał
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2021
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Vol. 69, nr 3
art. no. e137387
EN
The paper presents the results of research on the influence of the parameters of Fused Deposition Modelling (FDM) on the mechanical properties and geometric accuracy of angle-shaped parts. The samples were manufactured from acrylonitrile butadiene styrene (ABS) on a universal machine. A complete factorial experiment was conducted. The results indicated that the critical technological parameter was the angular orientation of the sample in the working chamber of the machine. The results were compared with the results of research performed on simple rectangular samples. A significant similarity was found in the relationships between the FDM parameters and properties for both sample types.
5
Content available Quality engineering challenges on the way to sustainability
Hamrol Adam
Management and Production Engineering Review
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2020
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Vol. 11, No. 4
113--120
EN
The goal of this paper is to present the author’s thoughts on the possible contribution of quality engineering to sustainable development. It is indicated that in the product life cycle designers have the greatest potential to support this challenge. Arguments have been presented to abandon the commonly accepted paradigm, according to which the overriding goal of the designer is to achieve the highest market value possible measured by the prospected level of demand for the products designed. It is postulated to include the minimization of the risks brought to the natural environment and social relations as a criterion of product design quality. To this goal, it is necessary for designers to pursue both environmentally friendly materials and technologies and design concepts reducing consumers’ pressure on continuously increasing demand. Such an approach will allow for more effective control of consumption, the main cause of the negative effects of economic growth.
6
Content available Mechanical engineering in Industry 4.0
Hamrol Adam, Gawlik Józef, Sładek Jerzy
Management and Production Engineering Review
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2019
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Vol. 10, No. 3
14–-28
EN
The article presents tools, methods and systems used in mechanical engineering that in combination with information technologies create the grounds of Industry 4.0. The authors emphasize that mechanical engineering has always been the foundation of industrial activity, while information technology, the essential part of Industry 4.0, is its main source of innovation. The article discusses issues concerning product design, machining tools, machine tools and measurement systems.
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