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Wyświetlanie 1-15 z 481
Tytuł:
Jan Stochel, a stellar mathematician
Autorzy:
Chavan, Sameer
Curto, Raúl
Jabłoński, Zenon Jan
Jung, Il Bong
Putinar, Mihai
Powiązania:
https://bibliotekanauki.pl/articles/29519747.pdf
Data publikacji:
2024
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
unbounded subnormal operator
moment problem
composition operator
Cauchy dual
Opis:
The occasion for this survey article was the 70th birthday of Jan Stochel, professor at Jagiellonian University, former head of the Chair of Functional Analysis and a prominent member of the Kraków school of operator theory. In the course of his mathematical career, he has dealt, among other things, with various aspects of functional analysis, single and multivariable operator theory, the theory of moments, the theory of orthogonal polynomials, the theory of reproducing kernel Hilbert spaces, and mathematical aspects of quantum mechanics.
Źródło:
Opuscula Mathematica; 2024, 44, 3; 303-321
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Udział wiernych świeckich w kościelnej władzy rządzenia. Teoretyczne implikacje zagadnienia w praktyce
Participation of the lay faithful in the ecclesiastical governance. Theoretical implications of the issue in practice
Autorzy:
Michowicz, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/40026627.pdf
Data publikacji:
2024-04-25
Wydawca:
Wyższe Seminarium Misyjne Księży Sercanów
Tematy:
kościelna władza rządzenia
teoria unitarna
teoria dwubiegunowa
potestas a munere
Konstytucja apostolska Praedicate Evangelium
ecclesiastical power of governance
unitary theory
dual theory
Apostolic Constitution Praedicate Evangelium
Opis:
Artykuł jest przyczynkiem do doktrynalnej dyskusji, której przedmiotem – od czasów obrad II Soboru Watykańskiego – jest udział wiernych świeckich w kościelnej władzy rządzenia. Prócz obecnych w doktrynie teorii władzy autor wskazuje na koncepcję władzy domniemanej, rozumiejąc przez nią możliwe rozwiązanie narosłych przez lata problemów i kontrowersji. Niedawna nowelizacja prawa o Kurii Rzymskiej zdaje się potwierdzać intuicję dotyczącą zaproponowanej teorii potestas a munere, którą wzmacniają nadto wydarzenia dokumentujące powierzenie wiernym świeckim istotnych urzędów kościelnych.
The article is a contribution to the doctrinal discussion, the subject of which, since the Second Vatican Council, has been the participation of the lay faithful in the Church’s governing authority. In addition to the theories of power present in the doctrine, the author points to the concept of presumed power, understanding it as a possible solution to the problems and controversies that have accumulated over the years. The recent amendment to the law on the Roman Curia seems to confirm the intuition of the proposed theory of potestas a munere, which is further strengthened by some events documenting the entrustment of some important Church offices to lay faithful.
Źródło:
Sympozjum; 2023, 2(45); 65-85
2543-5442
Pojawia się w:
Sympozjum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Gift of Languages. Paradigm Shift in US Foreign Language Education by Fabrice Jaumont and Kathleen Stein-Smith (A Book Review)
Autorzy:
Grotek, Monika
Powiązania:
https://bibliotekanauki.pl/articles/35194399.pdf
Data publikacji:
2023
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
dual language immersion programmes
foreign language education
advocacy
multilingualism
the USA
paradigm shift
Opis:
The article offers a critical review of The Gift of Languages. Paradigm Shift in U.S. Foreign Language Education by Fabrice Jaumont & Kathleen Stein-Smith, published by TBR Books in 2019. The book, fitting in the general category of instruction manuals and motivational materials, has been written in support of the cause of the advocates of the paradigm shift in foreign language learning in the United States. Focusing on the need to expand the L2 skills among US elementary, high school, and college students by means of the systematic implementation of two-way Dual-Language Immersion programs in K-12 and secondary public education, the monograph contributes to the mission of the Center for the Advancement of Language, Education and Communities. The CALEC, a non-profit organization with international membership and worldwide reach, focuses on promoting multilingualism and cross-cultural understanding by supporting language communities in creating programs of education in languages and cultures. The present article offers a review of this important, albeit popular, publication as a document testifying to the transformations of the American culture in the Age of Globalization.
Źródło:
Review of International American Studies; 2023, 16, 2; 205-223
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A dual-stator brushless doubly-fed generator for wind power application
Autorzy:
Liu, Hao
Song, Yakai
Bai, Chunlan
He, Guofeng
Yin, Xiaoju
Powiązania:
https://bibliotekanauki.pl/articles/27309959.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
doubly-fed machine
dual-stator
electromagnetic analysis
operational characteristics modes
wind power generation
Opis:
A novelty dual-stator brushless doubly-fed generator (DSBDFG) with magnetic-barrier rotor structure is put forward for application in wind power. Compared with a doubly-fed induction generator, the DSBDFG has virtues of high reliability and low maintenance costs because of elimination of brush and sliprings components. Therefore, the proposed structure has tremendous potential as a wind power generator to apply in wind power. According to the operating principle of electric machine, the DSBDFG is studied in wind power application. At first, the topology, the winding connecting, the rotor structure, the power flow chart of different operating models and the variable speed capability of electric machine are discussed and analyzed. Then, a 50 kW DSBDFG is designed. Based on the principal dimension of the design electric machine, the electromagnetic characteristics of the DSBDFG with different running modes are analyzed and calculated to adopt the numerical method. From the result, it meets the requests of electromagnetic consistency and winding connecting in the design electric machine. Meanwhile, it confirms the proposed DSBDFG has the strong ability of speed regulation.
Źródło:
Archives of Electrical Engineering; 2023, 72, 4; 1073--1087
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advances in type-II superlattice research at Fraunhofer IAF
Autorzy:
Müller, Raphael
Daumer, Volker
Hugger, Tsvetelina
Kirste, Lutz
Luppold, Wolfgang
Niemasz, Jasmin
Rehm, Robert
Stadelmann, Tim
Wobrock, Mark
Yang, Quankui
Powiązania:
https://bibliotekanauki.pl/articles/2204206.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
metastructures for QE enhancement
MWIR Ga-free T2SL nBn detectors
MWIR/LWIR dual-band technology
Opis:
Current advances in type-II superlattice (T2SL) research at Fraunhofer IAF are elaborated on in this paper. First, the use of metastructures for quantum efficiency (QE) enhancement in the longwave infrared (LWIR) is presented. Finite element modelling results are reported on that suggest a potential for doubling of the QE at certain wavelengths with the investigated device structure. Next, characterisation results of midwave infrared (MIWR) InAs/InAsSb T2SL nBn detectors are shown. The low, diffusion-limited dark current above 120 K and a QE of 60% are comparable to the state-of-the-art. Finally, groundwork for InAs/GaSb T2SL MWIR/LWIR dual-band detector arrays based on a back-to-back heterojunction diode device concept is presented. The dry etching technology allows for steep etch trenches and full pixel reticulation with a fill factor of about 70% at 12 μm pitch. The detector characterisation at 77 K and ±250 mV bias demonstrates the bias-switchable operation mode with dark current densities of 6.1·10ˉ⁹ A/cm² in the MWIR and 5.3·10ˉ⁴ A/cm² in the LWIR.
Źródło:
Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144553
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of alternative configurations of ship power systems using biofuels and renewable energy
Autorzy:
Herdzik, J.
Powiązania:
https://bibliotekanauki.pl/articles/24201481.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
biofuel
ship power systems
marine alternative fuels
carbon dioxide emission
energy efficiency indexes
renewable energy
dual and tri-fuel marine diesel engines
ship power system configuration
Opis:
The requirements to reduce emissions of carbon dioxide and other greenhouse gases from maritime transport require taking actions aimed at increasing the overall efficiency of the propulsion system, optimal and rational use of electricity and heat. Taking such actions is necessary in order to demonstrate the improvement of the energy efficiency index of a ship in operation or an already existing one (EEOI and EEXI), which will allow to obtain category A or B emissions for a given ship. Obtaining similar energy efficiency effects is also possible after switching to fuels containing less carbon in the molecule and the use of renewable energy. Attempts are made to create new configurations of combined energy systems so as to obtain maximum benefits related to the use of various energy sources in order to ensure the production of energy in quantities consistent with the current demand of the ship in the operating condition.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 569--575
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of pandemic with game methodology and numerical approximation
Autorzy:
Matusik, Radosław
Nowakowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/29432416.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
COVID-19
game model of pandemic
approximate dual dynamic programming
sufficient approximate optimality conditions for Nash equilibrium
numerical algorithm
Opis:
We build a mathematical game model of pandemic transmission, including vaccinations of population and budget costs of different acting to eliminate pandemic. We assume the interactions among different groups: vaccinated, susceptible, exposed, infectious, super-spreaders, hospitalized and fatality, defining a system of ordinary differential equations, which describes compartment model of disease and costs of the treatment. The goal of the game is to describe the development disease under different types of treatment, but including costs of them and social restrictions, during the shortest time period. To this effect we construct a dual dynamic programming method to describe open-loop Nash equilibrium for treatment, a group of people having antibodies and budget costs. Next, we calculate numerically an approximate open-loop Nash equilibrium.
Źródło:
Archives of Control Sciences; 2023, 33, 3; 651--680
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Armature MMF and electromagnetic performance analysis of dual three-phase 10-pole/24-slot permanent magnet synchronous machine
Autorzy:
Chen, Zhenfei
Xing, Ning
Ma, Hongzhong
Li, Zhixin
Li, Jiayu
Fan, Chenyang
Powiązania:
https://bibliotekanauki.pl/articles/2202550.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dual three-phase winding
fractional-slot
concentrated winding
permanent magnet synchronous machines (SCW-PMSMs)
MMF harmonic analysis
space harmonics
magnet eddy-current loss (ECL)
SVPWM voltage supply
Opis:
Fractional-slot concentrated-winding permanent magnet synchronous machines (FSCW-PMSMs) have a good prospect of application in the drive system of electric and hybrid electric vehicles. However, the armature magnetomotive force (MMF) of FSCWPMSM contains a large number of space harmonics, which induce large magnet eddycurrent loss (ECL). To solve this problem, a dual three-phase 10-pole and 24-slot winding layout is proposed.MMFharmonic analysis shows that the 1st, 7th and 17th space-harmonic winding factors of the proposed winding can be reduced by 100%, 87% and 87% respectively, compared with a dual three-phase 10-pole and 12-slot winding. Electromagnetic performances of the proposed machine under rated sinusoidal current supply and space vector pulse-width-modulated (SVPWM) voltage supply are investigated based on 2D finite-element analysis. It is shown that the proposed machine can meet the requirement of torque and efficiency in the full speed range. Especially, magnet ECL can be reduced greatly due to the reduction of the 7th and 17th space harmonics.
Źródło:
Archives of Electrical Engineering; 2023, 72, 1; 189--210
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Augmented speed control scheme of dual induction motors with mutual flux angle control loop
Autorzy:
Kondratenko, Dmytro
Lewicki, Arkadiusz
Łuksza, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/27309952.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
dual-motor drive
induction motors
IMs
five-leg voltage source inverter
FLVSI
rotor angle control
sensorless control
Opis:
This paper proposes an augmented speed control scheme of dual induction motors fed by a five-leg voltage source inverter (VSI) with a common/shared-leg. An additional control loop is proposed here and based on the mutual flux angle – the difference between flux angular positions of the IMs. The main purpose of this research is to minimize the energy losses in the common inverter leg by controlling the mutual flux angle, at equal angular speeds of both motors. Simulation and experimental studies were carried out and the effectiveness of the proposed control method was proven. The PLECS software package was used for the simulation tests. The laboratory prototypewas prepared for the experimental validation. All results were provided and discussed in this paper.
Źródło:
Archives of Electrical Engineering; 2023, 72, 4; 915--930
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bandwidth Enhancement for Half Mode Substrate Integrated Waveguide Antenna using Defected Ground Structures
Autorzy:
Astuti, Dian Widi
Rivayanto
Muslim
Simanjuntak, Imelda
Firmansyah, Teguh
Cahyasiwi, Dwi Astuti
Natali, Yus
Powiązania:
https://bibliotekanauki.pl/articles/27311970.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Bandwidth enhancement
dual cavity
half modesubstrate integrated waveguide
defected ground structure
U-slot
Opis:
The SIW antenna suffers from the narrow bandwidth for a single cavity and single resonant. Defected ground structure (DGS) with a dual cavity was the solution to solve narrow bandwidth by resulting in hybrid resonance. The hybrid resonance with 14.83% impedance bandwidth is proposed in this antenna design. The first resonance resulted from the combination of the TE101 modes from inner and outer HMSIW cavities while the second resonance resulted from the combination of the strong TE101 and the weak TE102 mode from the inner HMSIW cavity and the addition of the weak TE101 from the outer HMSIW cavity. The measurement antenna design has a broadband antenna with a 14.31% (5.71 – 6.59 GHz) impedance bandwidth by using substrate Rogers RO 5880.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 3; 449--454
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collinear double-pulse laser-induced breakdown spectroscopy using Nd:YAG laser generating two nanosecond pulses of regulated energy ratios
Autorzy:
Skrzeczanowski, Wojciech
Skórczakowski, Marek
Żendzian, Waldemar
Powiązania:
https://bibliotekanauki.pl/articles/27311741.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
dual-pulse laser
double-pulse LIBS
signal enhancement
self-absorption
factorial analysis
Opis:
In the paper results of single- and double-pulse LIBS (Laser-Induced Breakdown Spectroscopy) measurements in collinear geometry are described. The experiments were performed using a unique self-made Nd:YAG laser operating in the Q-switching regime, where the laser transmission losses are switched. Such a laser allowed for an easy and quick change of the operating mode (one and two pulses), free shaping of the energy ratio of the two pulses (division of the energy of a single pulse into two parts) and a smooth change of the delay time between pulses in the range from 200 ns to 10 μs. To our knowledge, such a laser was used in LIBS measurements for the first time. LIBS experiments revealed strong self-absorption depending on energy ratios carried out in the first and second laser pulse in the double-pulse mode. This was confirmed also by statistical factorial analysis of LIBS spectra. Plasma temperature and LIBS signal enhancement were measured both for energy proportions between the first and the second laser pulse and for the first-to-second-pulse delay.
Źródło:
Metrology and Measurement Systems; 2023, 30, 2; 273--287
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of DC/DC electric vehicle charging system with conventional transformer and planar transformer
Autorzy:
Rudawski, Maciej
Fatyga, Karol
Kwaśny, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/24202738.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
conventional transformer
dual active bridge
electric vehicle charging station
planar transformer
Opis:
This paper presents an analysis of electric vehicle charging station operation based on a dual active bridge topology. Two cases are considered: one with the use of a medium frequency planar transformer, the other with a conventional Litz winding transformer. An analysiswas performed using both solutions in order to compare the performance characteristics of the system for both cases and to present the differences between each transformer solution. The analysis was based on tests carried out on the full-scale model of an electric vehicle charging station, which is the result of the project "Electric vehicle charging system integrated with lighting infrastructure" realized by the Department of Drives and Electrical Machines, Lublin University of Technology. The results presented in the paper show that the conventional transformer used in the research achieved better results than the planar transformer. Based on the results obtained, the validity of using both solutions in electric vehicle charging stations was considered.
Źródło:
Archives of Electrical Engineering; 2023, 72, 2; 339--355
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of Hybrid Yarn with the Combination of Fiber and Filaments and Its Effect on the Denim Fabric Performance
Autorzy:
Babaarslan, Osman
Shahid, Md Abul
Doğan, Fatma B.
Powiązania:
https://bibliotekanauki.pl/articles/24200938.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
dual core-spun yarn
elastane
filament yarn
yarn properties
denim fabric performance
Opis:
Consumer choice and behavior are changing and focusing on comfortable clothing along with fitting. Elastic yarn or fabric is necessary to achieve this comfortableness. By making elastic yarn and using elastic material in fabric production, elastic cloths are produced with proper stretchability and recovery. For that, core-spun yarn was used, but due to a lack of recovery performance, dual core-spun yarn has been developed. Different elastane ratios, linear density, and filaments were used in the dual core-spun yarn according to achieve desired stretchability. In this study, denim fabric performances were evaluated by designing different composite/hybrid dual core-spun yarn with a combination of cotton fiber and filaments. Different elastane linear densities with different filaments, PET/PTT, PTT, and PET, were used, and it was found that using finer elastane in dual core-spun yarn, strength, and unevenness are increased, and elongation decreased. Using PET/PTT filament increases hairiness, and using PTT filament increases elongation. For fabrics, coarser elastane in the dual core-spun yarns has higher stiffness, elasticity, and shrinkage. Fabric with PTT showed higher weight change and stiffness, whereas PET filament-based fabric samples have good strength and low stiffness. In addition, a multiple regression analysis was carried out for yarn and fabric properties, and mathematical models were developed.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 1; 25--37
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual quaternions for the kinematic description of a fish-like propulsion system
Autorzy:
Kitowski, Zygmunt
Piskur, Paweł
Orłowski, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/11542693.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
dual quaternion
artificial fish
underwater vehicle
undulating propulsion system
kwaternion dualny
sztuczna ryba
pojazd podwodny
układ napędowy
Opis:
This study discusses the use of quaternions and dual quaternions in the description of artificial fish kinematics. The investigation offered here illustrates quaternion and dual quaternion algebra, as well as its implementation in the software chosen. When it comes to numerical stability, quaternions are better than matrices because a normalised quaternion always shows the correct rotation, while a matrix more easily loses its orthogonality due to rounding errors and oversizing. Although quaternions are more compact than rotation matrices, using quaternions does not always provide less numerical computation and the amount of memory needed. In this paper, an algebraic form of quaternion representation is provided which is less memory-demanding than the matrix representation. All the functions that were used to prepare this work are presented, and they can be employed to conduct more research on how well quaternions work in a specific assignment.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2023, 33, 2; 171--181
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Roll Force Decrease in Hot Rolling of Dp600 Steel Grade by Use of Roll Gap Lubrication
Efekt spadku siły walcowania na gorąco stali Dp600 w wyniku smarowania kotliny walcowniczej
Autorzy:
Kaźmierski, Tomasz
Krawczyk, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/27310192.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
hot rolling
dual phase steel
roll force
roll gap lubrication
walcowanie na gorąco
stale dwufazowe
siła walcowania
smarowanie kotliny walcowniczej
Opis:
The force required for plastic deformation of steel in the hot rolling process is an important parameter which impacts roll wear, strip steering in finishing stands, shape and profile of the rolled strip and energy consumption. Theoretically, the roll force could be effectively decreased by rolling strips with higher temperatures and a lower speed or by reducing the strip’s input thickness. Due to the required mechanical properties of hot rolled strips as well as the continuous drive toward increased rolling line productivity and cost optimisation, in most cases, it is impossible to lower roll force by changing these two parameters. Roll gap lubrication effectively decreases the roll force, and lowering the friction between the work roll's surface and rolled material reduces roll force by 5% to 20%. Lower roll force brings obvious results in lower energy consumption, but even more important are benefits coming from lower work roll wear and improved strip shape and profile. These issues are particularly important during the hot rolling of dual-phase steel, which due to relatively low final rolling temperature (FRT), requires a higher roll force resulting from increased steel yield stress at lower temperatures.
W procesie walcowania na gorąco siła konieczna do uzyskania pożądanego stopnia odkształcenia plastycznego materiału w kotlinie walcowniczej jest istotnym parametrem, wpływającym na stopień zużycia walców, prowadzenie pasma w klatkach walcowniczych, kształt i profil walcowanego pasma oraz zużycie energii elektrycznej. Efektywnymi sposobami zmniejszenia siły koniecznej do odwalcowania pasma w grupie klatek wykańczających mogłoby być prowadzenie walcowania w wyższej temperaturze i z mniejszymi prędkościami lub zmniejszenie wejściowej grubości pasma. Z uwagi na wymagane własności mechaniczne blachy po walcowaniu na gorąco, a także ciągłe dążenie do zwiększenia wydajności linii i optymalizacji kosztów, najczęściej nie jest to możliwe. Skutecznym sposobem pozwalającym na zmniejszenie siły walcowania jest zastosowanie smarowania kotliny walcowniczej. Zmniejszenie tarcia pomiędzy powierzchnią walców i walcowanym materiałem pozwala uzyskać spadek siły na poziomie 5–20%. Spadek siły walcowania przekłada się wprost na zmniejszenie zużycia energii elektrycznej, jednak najważniejsze są korzyści związane ze zmniejszonym zużyciem walców roboczych i lepszą kontrolą kształtu pasma. Kwestie te nabierają szczególnego znaczenia podczas produkcji blachy o strukturze dwufazowej, która z uwagi na wymaganą stosunkowo niską temperaturę końca walcowania charakteryzuje się dużym oporem odkształcenia skutkującym występowaniem dużych sił w trakcie walcowania w grupie klatek wykańczających.
Źródło:
Tribologia; 2023, 2; 27--33
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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