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Effect of Swirl Angle on Interaction between Swirl Oxygen Lance Jet and Melt Pool

Haoran Ma Guangqiang Liu Chengcheng Xu Kun Liu Peng Han
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 50-57 | DOI: 10.24425/afe.2024.149251
Keywords Swirl oxygen Melt pool Swirl angle Gas-liquid interface Dead zone
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Abstract

In order to clarify the action law of the swirl oxygen lance jet on the melt pool of the converter and to determine the optimal swirl angle of the swirl oxygen lance for the 120t converter, this study establishes the gas-liquid two-phase flow model of the oxygen lance with different swirl angles based on the realizable k-ε model and the VOF multiphase flow model. The gas-liquid interface behavior during the interaction between the jet and the molten pool was analyzed, and the flow pattern of molten steel in the molten pool was mainly investigated. The results show that compared with traditional oxygen lance, the rotating oxygen lance jet enhances the stirring of the melt pool and intensifies the fluctuation of the melt pool liquid level. The depth of the impact cavity decreases with the increase of the swirl angle, but the diameter of the impact cavity increases with the increase of the swirl angle. When the jet with a swirl angle of 10 ° impacts the surface of the melt pool, the turbulence energy obtained by the molten steel is the highest, the average flow velocity inside the melt pool is the highest, and the molten steel is stirred more thoroughly, achieving better melting effects.
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Bibliography

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Authors and Affiliations

Haoran Ma
1
Guangqiang Liu
2
Chengcheng Xu
3
Kun Liu
1
ORCID: ORCID
Peng Han
1
  1. College of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 3114051, China
  2. College of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China
  3. Cold rolling mill plant, ANGANG Steel Company Limited, Anshan 114021, China

Image Processing Techniques for Crack Detection in MPI of Springs

Marcin M. Marciniak
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 58-65 | DOI: 10.24425/afe.2024.149252
Keywords Non-destructive testing Magnetic particle inspection Coil spring image processing Crack detection
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Abstract

This study investigates image processing techniques for detecting surface cracks in spring steel components, with a focus on applications like Magnetic Particle Inspection (MPI) in industries such as railways and automotive. The research details a comprehensive methodology that covers data collection, software tools, and image processing methods. Various techniques, including Canny edge detection, Hough Transform, Gabor Filters, and Convolutional Neural Networks (CNNs), are evaluated for their effectiveness in crack detection. The study identifies the most successful methods, providing valuable insights into their performance. The paper also introduces a novel batch processing approach for efficient and automated crack detection across multiple images. The trade-offs between detection accuracy and processing speed are analyzed for the Morphological Top-hat filter and Canny edge filter methods. The Top-hat method, with thresholding after filtering, excelled in crack detection, with no false positives in tested images. The Canny edge filter, while efficient with adjusted parameters, needs further optimization for reducing false positives. In conclusion, the Top-hat method offers an efficient approach for crack detection during MPI. This research offers a foundation for developing advanced automated crack detection system, not only to spring sector but also extends to various industrial processes such as casting and forging tools and products, thereby widening the scope of applicability.
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Bibliography

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Authors and Affiliations

Marcin M. Marciniak
1
  1. Rzeszow University of Technology, Poland

Evaluation of High Pressure Die Casting Mold Temperature Relations Depending on the Location of the Tempering Channels

J. Majerník M. Podaril M. Majernikova
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 115-120 | DOI: 10.24425/afe.2024.149258
Keywords Product development Application of information technology to the foundry industry Thermal stress Mold material Tempering
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Abstract

During the casting cycle, the relatively cold material of the mold comes into contact with the significantly higher temperature melt, which causes high temperature fluctuations on the face of the mold and in its volume, which cause cyclic temperature stress. The submitted article is based on conclusions of the article “Evaluation of the temperature distribution of a die casting mold of X38CrMoV5_1 steel”, in which the modification of temperature relations of the mold in the direction from the mold face to its volume was investigated. In current article, the influence of the tempering channel distance on the temperature modification in the volume of high pressure die casting mold is investigated. Three variants of the tempering channels placements with different location respecting the mold cavity were investigated. The temperature was monitored in two selected locations, with distribution of 1mm, 2mm, 5mm, 10mm and 20mm in the direction from the mold cavity surface to the volume of fixed and movable part of the mold. As a comparative parameter, the temperature of the melt in the center of the runner above the measuring point and the temperature of the melt close to the face of the mold were monitored. The measurement was performed using Magmasoft simulation software. It was discovered that up to a distance of 5mm from the face of the mold, a zone with complete heat transit without its accumulation occurs. Above this limit, the mold begins to accumulate heat, and from distance of 20mm from the face of the mold, the heat gradually passes into the entire mass of the mold without significant temperature fluctuations. The propositions derived from the results of the experiments presented at the end of the article will subsequently be experimentally verified in further research works.
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Bibliography

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Authors and Affiliations

J. Majerník
1
ORCID: ORCID
M. Podaril
1
ORCID: ORCID
M. Majernikova
1
  1. Institute of Technology and Business in České Budějovice, Czech Republic

Copper Beam Electron Alloying with Ti Powder

P.E. Smolarczyk M. Krupiński M. Węglowski Wojciech Pakieła P. Śliwiński
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 88-93 | DOI: 10.24425/afe.2024.149255
Keywords Copper Beam electron alloying Abrasion resistance Conductivity
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Abstract

The paper presents the effect of electron beam alloying on the surface of a copper flat bar (M1Ez4) with titanium powder. Due to the quality of the surface after alloying and the obtained properties, the parameters used were given which met the assumed conditions to the greatest extent. The microstructure and mechanical properties as well as the chemical composition of surface-modified electron-beam copper show improved mechanical properties, i.e. hardness and abrasion resistance. This article uses research techniques using scanning electron microscopy and analysis of chemical composition in micro-areas (EDS). In order to examine the properties of the material after electron beam modification, hardness measurements were performed at low loads (HV0.1), abrasion resistance was tested, and conductivity was also measured. As a result of modifying the chemical and phase composition of M1E copper using an electron beam, the hardness increased by 46%, while the conductivity decreased by 16% due to the formation of intermetallic phases during solidification.
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Bibliography

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Authors and Affiliations

P.E. Smolarczyk
1
ORCID: ORCID
M. Krupiński
1
ORCID: ORCID
M. Węglowski
2
ORCID: ORCID
Wojciech Pakieła
1
ORCID: ORCID
P. Śliwiński
2
ORCID: ORCID
  1. Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland
  2. Łukasiewicz Research Network – Upper Silesian Institute of Technology, Bł. Czesława 16-18, 44-100 Gliwice, Poland

Study of Susceptibility to Tearing of AlSi5Cu2Mg Alloy with Addition of Zr and Ti

M. Matejka D. Bolibruchová E. Kantoríková
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 107-114 | DOI: 10.24425/afe.2024.149257
Keywords Al-Si-Cu-Mg alloy Hot tears Curve of load force Dendrite coherency point
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Abstract

The current trend of continuous improvement of various components constantly pushes the development of new materials forward. The basic goal of research into new and better materials is to improve their properties compared to the original material. One of the essential properties of the newly developed aluminum alloys is their resistance to the formation of tearing. Tears appear during the solidification of the casting and break the integrity due to tension arising while cooling. Several factors influence the susceptibility to tearing, but they can be minimized and reduce the chance of their occurrence. As part of the experiment, the AlSi5Cu2Mg alloy was evaluated in four material variants, without additives (in the reference state), with the addition of transition elements Zr, Ti and their combination Zr + Ti. Susceptibility to the formation of teras was assessed using a qualitative method supplemented by microscopic analysis of the tear profile and determination of the dendritic coherence temperature. The evaluation shows that the addition of Zr increased the susceptibility to tear formation. On the contrary, the addition of Ti had a positive effect and reduced the susceptibility to the formation of tears. The effect of the addition of Zr and Ti in the AlSi5Cu2Mg alloy showed a similar values as without the addition of alloys (reference condition). Microstructural analysis of the tear profile pointed to the negative influence of phases rich in Zr. The subsequent evaluation of the dendritic coherence temperature of individual AlSi5Cu2Mg alloys did not show a correlation with the results of a quantitative evaluation of susceptibility to tears.
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[9] Hasan, A. & Suyitno, A. (2014). Effect pouring temperature on casting defect susceptibility of hot tearing in metal alloy Al-Si. Applied Mechanics and Materials. 758, 95-99. https://doi.org/10.4028/www.scientific.net/AMM.758.95.
[10] Djurdjevic, M.B. Sokolowski, J.H. & Odanovic Z. (2012). Determination of dendrite coherency point characteristics using first derivative curve versus temperature. Journal of Thermal Analysis and Calorimetry volume. 109(2), 875-882. https://doi.org/10.1007/s10973-012-2490-4.
[11] Gómez, I. V., Viteri, E. V. Montero, J., Djurdjevic, M. & Huber, G. (2018). The determination of dendrite coherency point characteristics using three new methods for aluminum alloys. Applied Sciences. 8(8), 1236, 1-14. https://doi.org/10.3390/app8081236.
[12] Bolibruchová, D., Širanec, L. & Matejka, M. (2022). Selected properties of a Zr-containing AlSi5Cu2Mg alloy intended for cylinder head castings. Materials. 15(14), 4798, 1-16. https://doi.org/10.3390/ma15144798
[13] Bolibruchová, D., Kuriš, M., Matejka, M. & Kasińska, J. (2022). Study of the influence of zirconium, titanium and strontium on the properties and microstructure of AlSi7Mg0.3Cu0.5 alloy. Materials. 15(10), 3709, 1-20. https://doi.org/10.3390/ma15103709.
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Authors and Affiliations

M. Matejka
1
ORCID: ORCID
D. Bolibruchová
1
ORCID: ORCID
E. Kantoríková
1
ORCID: ORCID
  1. University of Zilina, Faculty of Mechanical Engineering, Department of Technological Engineering, Slovak Republic

Design and Verification of Sector Vortex Archimedean Spiral Phased Array Transducer for Improving Focus Acoustic Pressure

Xiaodan Lu Deping Zeng
Archives of Acoustics | 2024 | vol. 49 | No 1 | 73-81 | DOI: 10.24425/aoa.2024.148769
Keywords phased array transducer Archimedean spiral high-intensity focused ultrasound (HIFU) focal deflection
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Abstract

The emergence of high-intensity focused ultrasound applications brings great potential to establish noninvasive therapeutic treatment in place of conventional surgery. However, the development of ultrasonic technology also poses challenges to the design and manufacture of high-power ultrasound transducers with sufficient acoustic pressure. Here, the design of a sector vortex Archimedean spiral phased array transducer that is able to enhance focal acoustic pressure is proposed by maximizing the filling factor of the piezoelectric array. The transducer design was experimentally verified by hydrophone measurements and matched well with acoustic simulation studies. The focal deflection was shown to be feasible up to ±9 mm laterally and up to ±20 mm axially, where the effective focal acoustic pressure can be maintained above 50% and the level of the grating lobe below 30%. Furthermore, a homogeneous pressure distribution without secondary focus was observed in the pre-focal region of the transducer. The rational design of a high-intensity focused ultrasound transducer indicates promising development in the treatment of deep tissue thermal ablation for clinical applications.
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Authors and Affiliations

Xiaodan Lu
1
Deping Zeng
2
  1. State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering Chongqing Medical University Chongqing, China
  2. National Engineering Research Center of Ultrasound Medicine Chongqing, China

Application of Arc Furnace Flue Ash in Casting Heat Insulation Riser

Junjie Zhu Jian Feng Ling Liu Huafang Wang Jijun Lu
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 129-134 | DOI: 10.24425/afe.2024.149260
Keywords Arc furnace flue ash Iron black Orthogonal optimization
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Abstract

Iron black commonly employs in thermal insulation riser sleeves due to its ability to react with aluminum powder, generating heat. However, the complex production process and unstable composition of iron black lead to high production costs. The potential of using arc furnace flue ash (AFFA) as a complete substitute for iron black and MnO2 and KNO3 oxidizing agents in conventional riser sleeves was investigated in this study. Waste material can be transformed into a valuable resource, while production costs can be reduced by utilizing arc furnace flue ash. The research examined the impact of varying types and amounts of arc furnace flue ash on riser sleeve temperature and holding time by conducting single-factor and orthogonal optimization experiments. The orthogonal optimization experiment determined that the optimum ratio of each oxidant was 6 % arc flue ash, 3 % MnO2 and 6 % KNO3. At this time, the highest temperature was 1512 ℃ and the holding time was 244 s. Results indicated that different types of arc furnace flue ash used as an oxidizing agent demonstrated superior holding capacity and heat generation performance compared to iron black. Additionally, a comparative analysis of factory casting experiments using ductile iron 600-3 (IS) revealed that both arc furnace flue ash and iron black risers effectively countered shrinkage. However, arc furnace flue ash risers exhibited improved mechanical properties, as evidenced by the hardness of the castings.
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Bibliography

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Authors and Affiliations

Junjie Zhu
1
ORCID: ORCID
Jian Feng
2
ORCID: ORCID
Ling Liu
1
ORCID: ORCID
Huafang Wang
1
ORCID: ORCID
Jijun Lu
1
ORCID: ORCID
  1. School of Mechanical Engineering and Automation, Wuhan Textile University, China
  2. CRRC Corporation Limited, China

Sprawozdanie z konferencji naukowej "Z problemów prozy - powieść o artyście"

Agnieszka Grzelak Joanna Jagodzińska
Ruch Literacki | 2005 | No 1 | 111-114
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Authors and Affiliations

Agnieszka Grzelak
Joanna Jagodzińska

Maria Dąbrowska-Partyka, Literatura pogranicza - pogranicza literatury, Kraków 2004

Julian Kornhauser
Ruch Literacki | 2005 | No 1 | 101-103
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Authors and Affiliations

Julian Kornhauser

Andrzej Juszczyk, Retoryka a poznanie. Powieściopisarstwo Teodora Parnickiego, Kraków 2004

Aleksandra Chomiuk
Ruch Literacki | 2005 | No 1 | 98-101
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Authors and Affiliations

Aleksandra Chomiuk

Analele Universitatii Spiru Haret. Seria Filologie. Bucuresti 1999,2000, 2001

Andrzej Zawadzki
Ruch Literacki | 2005 | No 1 | 109
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Authors and Affiliations

Andrzej Zawadzki
ORCID: ORCID

Rocznik "Formules, revue litteratures a contraintes" z lat 1997-2004

Jacek Olczyk
Ruch Literacki | 2005 | No 1 | 104-108
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Authors and Affiliations

Jacek Olczyk

“Don’t betray the myth”: Modernist dance and the avant- garde studio Heptachor in the memoirs of its co-founder Stephanida Rudneva

Anastasia Nabokina
Ruch Literacki | 2023 | No 3 (378) | 355-372 | DOI: 10.24425/rl.2023.146712
Keywords History of modern dance Modernism Russian/Soviet Musical Movement Heptachor Stephanida Rudneva (1890–1989)
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Abstract

The Heptachor (Гептахор) studio was a leading early 20 th-century Russian modern dance school committed to a revival of the art of dance and the development of new forms of musical movement and new concepts of artistic creation. In the years 1914–1934, it was the centre of the Musical Movement dance school, experimenting with a wide range of artistic, educational and therapeutic practices. The aim of the article is, first, to present the history of the Heptachor studio on the basis of the recollections and memoirs of its co-founder Stephanida Rudneva, contemporary documents and archive materials, and, second, to analyze the typical creative process narratives included in those sources.
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Authors and Affiliations

Anastasia Nabokina
1
ORCID: ORCID
  1. Katedra Antropologii Literatury i Badań Kulturowych UJ

“My hands are burning, my brain and head are seething”: The artist and the affects, or the creative process in the poetry of Kazimierz Przerwa-Tetmajer

Lidia Kamińska
Ruch Literacki | 2023 | No 3 (378) | 333-353 | DOI: 10.24425/rl.2023.146711
Keywords literary theory creative process theory of affect autothematic narration Young Poland movement Kazimierz Przerwa-Tetmajer (1865–1940)
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Abstract

The aim of this article is to show how Kazimierz Przerwa-Tetmajer depicts the creative process in his autothematic poems. The readings draw on the interpretative strategies of the theory of affect (primarily the work Ernst van Alphen, Teresa Brennan and Brian Massumi) and somatic criticism (e.g. Anna Łebkowska’s somatopoetics, Marta Smo-lińska’s ‘augmented haptics’). In the great majority of Przerwa-Tetmajer’s poems dealing with the process of poetic creation, we are told that it is triggered by an explosion of the affects or an overpowering divine inspiration, bordering on madness. The article ana-lyzes in turn the affective nature of the creative process and the affective perception of a work of art; the image of the artist as craftsman; and, finally, the image of the phantas-matic woman, a product of the act of creation.
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Authors and Affiliations

Lidia Kamińska
1
ORCID: ORCID
  1. Szkoła Doktorska Nauk Humanistycznych, Uniwersytet Jagielloński

Jacek Kowzan, Quattuor hominum novissima. Dzieje serii tematycznej czterech rzeczy ostatecznych w literaturze staropolskiej, Siedlce 2003

Maciej Włodarski
Ruch Literacki | 2005 | No 1 | 89-92
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Authors and Affiliations

Maciej Włodarski

Jana Czubka krakowska rocznica i uwag kilka o Orlandzie Ariosta-Kochanowskiego

Jerzy Weinberg
Ruch Literacki | 2005 | No 1 | 81-88
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Authors and Affiliations

Jerzy Weinberg

Czesław Milosz, Przygody młodego umysłu. Publicystyka i proza 1931-1939, zebrała i opracowała Agnieszka Stawiarska, Kraków 2003

Sławomir Sobieraj
Ruch Literacki | 2005 | No 1 | 94-98
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Authors and Affiliations

Sławomir Sobieraj

Zbigniew Sudolski, W błękitnym kręgu, Pułtusk 2004

Jacek Lyszczyna
Ruch Literacki | 2005 | No 1 | 92-94
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Authors and Affiliations

Jacek Lyszczyna

Between the computer, a pencil, and a typewriter: Adam Zagajewski on his own writing

Anna Czabanowska-Wróbel
Ruch Literacki | 2023 | No 3 (378) | 395-410 | DOI: 10.24425/rl.2023.146714
Keywords Polish literature of the 20th–21st century autobiographical writing poetic autoportrait creative process inspiration Adam Zagajewski (1945–2021)
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Abstract

This article deals with the issues of the creative process explored by Adam Zagajewski in his writings, especially in his poems forming the cycle of Autoportraits. Indeed, he revisited the subject on numerous occasions, pointing to the importance of inspiration, which, he regretted, received too little attention in today’s world. Be it as it may, in the end it all comes down to the question about how he actually wrote his poems. This article is the first attempt to reconstruct the methods of Zagajewski’s creative work; it also retraces the process of writing a single poem from a poetic note to its final version.
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Authors and Affiliations

Anna Czabanowska-Wróbel
1
ORCID: ORCID
  1. Wydział Polonistyki Uniwersytetu Jagiellońskiego

‘Chiaroscuro of criticism’: Karol Irzykowski’s aesthetics of subtlety

Kamil Kaczmarek
Ruch Literacki | 2023 | No 3 (378) | 373-394 | DOI: 10.24425/rl.2023.146713
Keywords Literary theory and aesthetics Polish literary criticism of the interwar period creative process the concept of subtlety Karol Irzykowski (1873–1944)
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Abstract

This article is to attempt to explain the concept of subtlety, recommended by Karol Irzykowski, one of Poland’s great minds of the early 20th century, to his fellow literary critics as a supreme guide in their work, including the sorting out of a work's historical and cultural contexts. Irzykowskis ‘subtlety’ is a highly complex concept as it reaches out to the cognitive mechanisms of the brain to throw light on and account for the dynamic relationship of consciousness and unconsciousness in the creative process. Conse-quently, subtlety in that sense is not just another analytical tool of literary criticism. It is more like a sophisticated sensor tracing the interfaces of psychology and aesthetics (the ‘chiaroscuro of criticism’). In criticism, when used to its fullest capacity, subtlety would not only take into account the recipient but also the impact (creative impulse) of the critical text.
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Authors and Affiliations

Kamil Kaczmarek
1
ORCID: ORCID
  1. doktorant, Szkoła Doktorska Nauk Humanistycznych UJ

Partytury poezji dźwiękowej (cykl Bernarda Heidsiecka, Poemes--partitions)

Andrzej Hejmej
Ruch Literacki | 2005 | No 1 | 69-80
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Authors and Affiliations

Andrzej Hejmej

Tadeusz Rittner’s theatrical self-characterizations (in three scenes)

Sabina Brzozowska
Ruch Literacki | 2023 | No 3 (378) | 413-424 | DOI: 10.24425/rl.2023.146715
Keywords Polish drama and literature of the early 20th century Polish-Austrian literary connections Galicia Viennese modernism Tadeusz Rittner (1873–1921)
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Abstract

The general view of Tadeusz Rittner, a highly successful playwright of the early 20th century, as an uncommitted realist and author of ‘well-made plays’ has, no doubt, been formed and fixed by Zbigniew Raszewski, renowned historian of the theatre who wrote the introductions to the postwar editions of Rittner's plays. This article shows a rather different picture of Rittner, based on his journalism, autobiographical novels and lesser-known dramas in which he pursued his innovatory theatrical visions. The complete Rittner is, in fact, made up of metatheatricality, the grotesque, the aes-thetics of Viennese modernism and a fair share of commercialism.
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Authors and Affiliations

Sabina Brzozowska
1
ORCID: ORCID
  1. Uniwersytet Opolski

(Somo/Topo) Autopoietic narrations: The creative subject (as a body in a network of objects)

Mateusz Antoniuk
Ruch Literacki | 2023 | No 3 (378) | 313-331 | DOI: 10.24425/rl.2023.146710
Keywords literary theory autopoietic narration body image creative process community context Tadeusz Peiper (1891–1969) Józef Czechowicz (1903–1939)
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Abstract

This article is an attempt at a narrowly-focused application of a critical approach labelled ‘a history of the history of creativity’, formulated by Magdalena Popiel in her study The World of the Artist: Modernist Aesthetics of Creativity (2017). The article highlights the domain of autopoietic narratives – stories told by artists about their own creative performance, which involves projecting one’s own somatic identity and positioning one-self in a given socio-cultural context (community) – and examines the discursive dimen-sions of the creative process in the metanarrations of Tadeusz Peiper and Józef Czecho-wicz, two major poets of the Polish interwar avant-garde. The resulting model of the creative process is then set into the context of contemporary philosophical, anthropo-logical and psychological theories of creativity.
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Authors and Affiliations

Mateusz Antoniuk
1
ORCID: ORCID
  1. Mateusz Antoniuk – Wydział Polonistyki UJ

Autopoiesis, or modern histeria

Michał Paweł Markowski
Ruch Literacki | 2023 | No 3 (378) | 297-311 | DOI: 10.24425/rl.2023.146709
Keywords literary theory discourse and identity construction autopoiesis modernity Gustave Flaubert (1821–1880)
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Abstract

Contrary to the prevailing methodological consensus, this article defines autopoiesis as a synonym of autocreation, or, more precisely, discursive identity construction. The latter refers to a literary ‘existential project’ which assumes that the sense of the self, or sameness, is the product of multiple, mostly discursive, interactions. They are the tex-ture of complex cultural processes which result in the determination by an individual of what he/she would like to be or what he/she would like be perceived. This construction of the self is in a state of ongoing contextualization within two distinct identity dis-courses, the discourse of individual uniqueness (founded on the sense of one’s body) and the discourse of collective participation (as defined by politics). The article argues that the two-dimensional contextualization is essentially historical and defines a broadly understood modernity. By examining the work of Gustave Flaubert the article shows how the oscillation between these two poles shapes the image of the modern writer created by Flaubert himself.
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Authors and Affiliations

Michał Paweł Markowski
1
  1. University of Illinois, Chicago i Uniwersytet Jagielloński

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