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Tytuł:
The Leading Role of Aluminium in the Growing Production of Castings Made of the Non-Ferrous Alloys
Autorzy:
Soiński, M. S.
Jakubus, A.
Powiązania:
https://bibliotekanauki.pl/articles/2079827.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry production
non-ferrous alloys
aluminium alloys
produkcja odlewnicza
stopy metali nieżelaznych
stopy aluminium
Opis:
The paper presents changes in the production volume of castings made of non-ferrous alloys on the background of changes in total production of casting over the 2000-2019 period, both on a global scale and in Poland. It was found that the dynamics of increase in the production volume of castings made of non-ferrous alloys was distinctly greater than the dynamics of increase in the total production volume of castings over the considered period of time. Insofar as the share of production of the non-ferrous castings in the total production of castings was less than 16% during the first two years of the considered period, it reached the level of 20% in the last four years analysed. This share, when it comes to Poland, increased even to the greater degree; it grew from about 10% of domestic production of castings to over 33% within the regarded 2000-2019 period. The greatest average annual growth rate of production, both on a global scale and in Poland, was recorded for aluminium alloys as compared with other basic non-ferrous alloys. This growth rate for all the world was 4.08%, and for Poland 10.6% over the 2000-2019 period. The value of the average annual growth rate of the production of aluminium castings in Poland was close to the results achieved by China (12%), India (10.3%) and the South Korea (15.4%) over the same period of time. In 2019, the total production of castings in the world was equal to about 109 million tonnes, including over 21 million tonnes of castings made of non-ferrous alloys. The corresponding data with respect to Poland are about 1 million tonnes and about 350 thousand tonnes, respectively. In the same year, the production of castings made of aluminium alloys was equal to about 17.2 million tonnes in the world, and about 340 thousand tonnes in Poland.
Źródło:
Archives of Foundry Engineering; 2021, 21, 3; 33-42
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimising a model of minimum stock level control and a model of standing order cycle in selected foundry plant
Autorzy:
Szymszal, J.
Lis, T.
Przondziono, J.
Nowacki, K.
Kliś, J.
Powiązania:
https://bibliotekanauki.pl/articles/382979.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer aiding
foundry production
logistics
stock control models
wspomaganie komputerowe
produkcja odlewnicza
logistyka
sterowanie magazynem
Opis:
It has been found that the area where one can look for significant reserves in the procurement logistics is a rational management of the stock of raw materials. Currently, the main purpose of projects which increase the efficiency of inventory management is to rationalise all the activities in this area, taking into account and minimising at the same time the total inventory costs. The paper presents a method for optimising the inventory level of raw materials under a foundry plant conditions using two different control models. The first model is based on the estimate of an optimal level of the minimum emergency stock of raw materials, giving information about the need for an order to be placed immediately and about the optimal size of consignments ordered after the minimum emergency level has occurred. The second model is based on the estimate of a maximum inventory level of raw materials and an optimal order cycle. Optimisation of the presented models has been based on the previously done selection and use of rational methods for forecasting the time series of the delivery of a chosen auxiliary material (ceramic filters) to a casting plant, including forecasting a mean size of the delivered batch of products and its standard deviation.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 97-100
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shaping the Strength of Cast Rocker Arm for Special Purpose Vehicle
Autorzy:
Żuczek, R.
Pysz, S.
Maj, M.
Piekło, J.
Powiązania:
https://bibliotekanauki.pl/articles/379543.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer aiding
foundry production
design optimization
aluminium alloy
wspomaganie komputerowe
produkcja odlewnicza
optymalizacja konstrukcji
stop aluminium
Opis:
The article discusses the weldment to casting conversion process of rocker arm designed for operation in a special purpose vehicle to obtain a consistency of objective functions, which assume the reduced weight of component, the reduced maximum effort of material under the impact of service loads achieved through topology modification for optimum strength distribution in the sensitive areas, and the development of rocker arm manufacturing technology. As a result of conducted studies, the unit weight of the item was reduced by 25%, and the stress limit values were reduced to a level guaranteeing safe application.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3; 95-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced methods of foundry processes control
Zaawansowane metody sterowania procesami odlewniczymi
Autorzy:
Perzyk, M.
Kozlowski, J.
Wislocki, M.
Powiązania:
https://bibliotekanauki.pl/articles/351939.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry production
process control
learning systems
time-series
procesy odlewnicze
system sterowania
systemy uczące się
szeregi czasowe
Opis:
The paper discusses two main approaches utilized in contemporary industry to control of discrete and continuous manufacturing processes: Statistical Process Control and Engineering Process Control as well as applications of learning systems and time-series analysis in the control systems. The use of time-series techniques for anticipated control of selected foundry processes is presented and positively evaluated using industry data obtained from the green molding sand processing.
W artykule omówiono dwa podejścia stosowane we współczesnym przemyśle do sterowania dyskretnymi i ciągłymi procesami wytwarzania: Statystyczne Sterowanie Procesem oraz sterowanie techniczne (ang. Engineering Process Control), a także zastosowania systemów uczących się i analizy szeregów czasowych w systemach sterowania. Zaprezentowano i poddano pozytywnej ocenie wykorzystanie technik szeregów czasowych w antycypacyjnym sterowaniu wybranymi procesami odlewniczymi, z użyciem danych przemysłowych uzyskanych z procesu przerobu wilgotnych mas formierskich.
Źródło:
Archives of Metallurgy and Materials; 2013, 58, 3; 899-902
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure of Foundry Production in the World and in Poland over the 1974-2013 Period
Autorzy:
Soiński, M. S.
Skurka, K.
Jakubus, A.
Kordas, P.
Powiązania:
https://bibliotekanauki.pl/articles/381277.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry production
cast iron
cast steel
aluminium alloy
nonferrous alloy
produkcja odlewnicza
żeliwo
staliwo
stop aluminium
stop nieżelazny
Opis:
The paper presents data illustrating the total production of castings in the world and in Poland over the 1974-2013 period. The fractions of basic casting alloys in the total amount of material used for the production of metal castings during the considered period of time were found. It was noticed that the fraction of grey cast iron castings in the total amount of the produced castings decreased significantly over the past 40 years, both on a global scale (from about 65-75% to about 45%) and in Poland (from about 75-80% to about 45-55%). The fraction of SG iron increased considerably, up to about 25% in the world, and up to about 12-16% in Poland. The fraction of malleable became almost negligible (about 1%). The fraction of cast steel took different course in Poland and in the world: it stabilised on a global scale at about 10% in recent years, but dropped down to the level of about 4-7% in Poland. The use of aluminium alloys for the production of casting grew dynamically; their fraction in the total production of casting rose from somewhat less than 4% to almost 15% on a global scale. As far as Poland is considered, this growth was ever more intensive: from about 6-8% to about 25-30% in the 1989-2013 period (the detailed data for the previous period of time are lacking).
Źródło:
Archives of Foundry Engineering; 2015, 15, 2 spec.; 69-76
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of ALSV(FD) logic and XTT knowledge representation in the range of ADI properties
Autorzy:
Regulski, K.
Wilk-Kołodziejczyk, D.
Rojek, B.
Kluska-Nawarecka, S.
Adrian, W. T.
Powiązania:
https://bibliotekanauki.pl/articles/380492.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry production
computer aided foundry
application of information technologies
ADI
ALSV
rule based XTT format
odlewnia
odlewy
komputerowe wspomaganie odlewni
zastosowanie technologii informatycznych
Opis:
The objective of studies presented in this publication was structuring of research knowledge about the ADI functional properties and changes in these properties due to material treatment. The results obtained were an outcome of research on the selection of a format of knowledge representation that would be useful in further work aiming at the design, application and implementation of an effective system supporting the decisions of a technologist concerning the choice of a suitable material (ADI in this case) and appropriate treatment process (if necessary). ALSV(FD) logic allows easy modelling of knowledge, which should let addressees of the target system carry out knowledge modelling by themselves. The expressiveness of ALSV (FD) logic allows recording the values of attributes from the scope of the modelled domain regarding ADI, which is undoubtedly an advantage in the context of further use of the logic. Yet, although the logic by itself does not allow creating the rules of knowledge, it may form a basis for the XTT format that is rule-based notation. The difficulty in the use of XTT format for knowledge modelling is acceptable, but formalism is not suitable for the discovery of rules, and therefore the knowledge of technologist is required to determine the impact of process parameters on values that are functional properties of ADI. The characteristics of ALSV(FD) logic and XTT formalism, described in this article, cover the most important aspects of a broadly discussed, full evaluation of the applicability of these solutions in the construction of a system supporting the decisions of a technologist.
Źródło:
Archives of Foundry Engineering; 2016, 16, 2; 75-78
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Use of Modern Statistical Methods to Optimize Production Systems in Foundries
Autorzy:
Szymszal, J.
Gajdzik, B.
Kaczmarczyk, G.
Powiązania:
https://bibliotekanauki.pl/articles/379769.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
production of computer-aided
foundry production
quality of castings
statistical methods
forecasting
wytwarzanie wspomagane komputerem
produkcja w odlewni
jakość odlewów
metody statystyczne
prognozowanie
Opis:
Conducting reliable and credible evaluation and statistical interpretation of empirical results related to the operation of production systems in foundries is for most managers complicated and labour-intensive. Additionally, in many cases, statistical evaluation is either ignored and considered a necessary evil, or is completely useless because of improper selection of methods and subsequent misinterpretation of the results. In this article, after discussing the key elements necessary for the proper selection of statistical methods, a wide spectrum of these methods has been presented, including regression analysis, uni- and multivariate correlation, one-way analysis of variance for factorial designs, and selected forecasting methods. Each statistical method has been illustrated with numerous examples related to the foundry practice.
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 115-120
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trends in the Production of Castings in the World and in Poland in the XXI Century
Autorzy:
Soiński, M. S.
Kordas, P.
Skurka, K.
Powiązania:
https://bibliotekanauki.pl/articles/381362.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry production
cast iron
cast steel
aluminium alloys
non-ferrous alloys
produkty odlewnicze
żeliwo
staliwo
stopy aluminium
stopy metali nieżelaznych
Opis:
The paper presents data concerning the total production of castings over the 2000-2014 period, both on a global scale, and in Poland. The basic types of casting alloys were taken into account. Changes in the production volume and structure over the period of the analysed 15 years were pointed out with respect to countries leading in foundry production. The topmost position in the world foundry industry is held by China for several years (with almost 45% share in the foundry market), the second place is taken by India (with almost 9% share). A distinct reduction in the shares of the once significant producers of castings, such as USA, Japan, Germany, Russia, Italy, or France, was observed over the 2000-2014 period. Poland had a share of 1.16% in 2000, and of 1.02% in 2014. Comparing the detailed data concerning the years 2000 and 2014, one can see that the fractions of castings made of ductile iron, cast steel, aluminium alloys, or magnesium alloys increase on a global scale, while such alloys as grey cast iron or malleable are in decline.
Źródło:
Archives of Foundry Engineering; 2016, 16, 2; 5-10
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza stanu naprężeń w konstrukcjach odlewu korpusu, pokrywy i klina zasuw klinowych do gazu
Analysis of the state of stress in cast bodies, covers and wedges of the wedge gate valves used in gas networks
Autorzy:
Gwiżdż, A.
Żuczek, R.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/391680.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
Tematy:
komputerowe wspomaganie produkcji odlewniczej
symulacja rozkładu naprężeń
armatura żeliwna
computer-aided foundry production
simulation of stress distribution
cast iron fittings
Opis:
Przeprowadzono analizę numeryczną rozkładu naprężeń eksploatacyjnych w zasuwach miękko uszczelnionych do sieci gazowych z rur PE odlewanych z żeliwa sferoidalnego EN-GJS-400-15. Analiza przeprowadzona została z wykorzystaniem systemu ANSYS, na podstawie danych i dokumentacji dotyczącej rzeczywistych warunków próby, przeprowadzanych w Fabryce Armatur JAFAR SA. Zastosowanie oprogramowania ANSYS pozwoliło na zintegrowanie analiz numerycznych opracowanej konstrukcji wirtualnej, obciążanej ciśnieniem próby, z reakcją rzeczywistej konstrukcji w trakcie prób laboratoryjnych prowadzonych na stanowisku do analizy szczelności, wraz z możliwością weryfikacji wyników wirtualnych i rzeczywistych. W niniejszej publikacji przedstawiono wyniki analizy dla zaworów DN50 i DN150. Wyniki tej analizy wykorzystane będą do weryfikacji konstrukcji odlewów wchodzących w skład modeli zasuw klinowych, poprzez poprawki wymiarowe konstrukcji.
Numerical analysis was carried out to establish the operating stress distribution in soft-sealed gate valves cast from ductile iron EN-GJS-400-15 for the gas network of PE pipes. The analysis was carried out with ANSYS software, based on data and documentation of actual test conditions used at the JAFAR SA Fittings Factory. The use of ANSYS software allowed integration between the results of numerical analysis of the developed virtual structure loaded with test pressure and the response of real structure obtained during laboratory tests carried out on a stand for pressure leak testing, with further possibility of a verification of the results, both virtual and real. This publication presents the results of the analysis carried out on DN50 and DN150 gate valves. Through dimensional corrections introduced to the design, the results of this analysis will be used in verification of castings operating as components in models of the wedge gate valves.
Źródło:
Prace Instytutu Odlewnictwa; 2012, 52, 4; 127-153
1899-2439
Pojawia się w:
Prace Instytutu Odlewnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Possibility of Using Dynamic Methods for Assessment of Investment Projects in the Domestic Foundry Industry
Autorzy:
Szymszal, J.
Lis, T.
Gajdzik, B.
Kliś, J.
Powiązania:
https://bibliotekanauki.pl/articles/380393.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer-aided foundry production
dynamic methods for assessment
investment projects
efficiency calculus
odlewnia
komputerowe wspomaganie produkcji
projekty inwestycyjne
rachunek efektywności
Opis:
A comparative analysis involving the evaluation of the effectiveness of investment projects can be based on various rules indicating selection of the most favorable decisions. The dynamic methods for assessment of investment projects discussed in this article, which consider the possibility of modifying the predetermined investment options, are quite complex and difficult to implement. They are used both in the construction phase of the new company, as well as in its subsequent modernization. The assessments should be characterized by a high coefficient of the economic efficiency. The, observed in practice, high dynamic variability of both the external and internal conditions under which the company operates is the reason why in the process of calculating the economic efficiency of investment projects, there is a significant number of random parameters affected by high uncertainty and risk. Investments in the metallurgical industry are characterized by a relatively long cycle of implementation and operation. These are capital-intensive projects and often mistakenly taken investment decisions end in failure of the investment project and, consequently, in the collapse of the company. In addition, the applied methods of risk assessment of investment projects, especially the dynamic ones, should be fully understood by managerial staff and constitute an easy to use, yet accurate tool for improving the efficiency of the company.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3; 103-106
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykonanie rekonstrukcji odlewanej bransolety z epoki brązu
Perform Reconstruction of the Cast Bracelets from the Bronze Age
Autorzy:
Wildhirt, E.
Garbacz-Klempka, A.
Żak, P. L.
Stolarczyk, T.
Długosz, P.
Powiązania:
https://bibliotekanauki.pl/articles/380795.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
komputerowe wspomaganie
produkcja odlewnicza
epoka brązu
metoda wytapianych modeli
metoda szybkiego prototypowania
odlewnictwo artystyczne
computer aiding
foundry production
bronze age
investment casting process
rapid prototyping
art foundry
Opis:
W epoce brązu ozdoby, drobne wyroby artystyczne wykonywano metodą wytapianych modeli. Biżuteria miała funkcję użytkową i estetyczną, ale także świadczyła o statusie społecznym i bogactwie, była oznaką władzy oraz produktem wymiany na inny towar. Celem artykułu jest omówienie zagadnień związanych z wykonaniem odlewu zrekonstruowanej bransolety z epoki brązu. Analizie poddano proces wykonania odlewów w epoce brązu oraz porównano go ze współczesnymi metodami odlewania. Zaprezentowano projekt, model wykonany dzięki inżynierii odwrotnej oraz przedstawiono gotowy odlew odtworzonej bransolety z epoki brązu z użyciem metody wytapianych modeli. Podczas wykonywania bransolety wykorzystano metodę szybkiego prototypowania. Podstawą rekonstrukcji były oryginalne zabytkowe fragmenty form odlewniczych z epoki brązu pozyskane w wyniku współpracy Wydziału Odlewnictwa AGH z Muzeum Miedzi w Legnicy. Przeprowadzone badania mikroskopowe i defektoskopowe umożliwiły dokładne poznanie technologii oraz umożliwiły wykonanie bransolety, m.in. zrobienie pomiarów, które następnie posłużyły do wykonania trójwymiarowej rekonstrukcji gotowego wyrobu. W efekcie otrzymano odlane bransolety z brązu, które przybliżają kształty ozdób produkowanych w epoce brązu.
In the Bronze Age ornaments, fine art products made by Lost Wax. It had jewelry and aesthetic function, but also the supply of social status and wealth, was a sign of power and Exchange product to another product. The purpose of the article is to discuss issues related to the implementation of the newly refurbished casting bracelets to the bronze age. The implementation process were analysed castings in bronze and compares it with the modern methods of casting. To learn the design, made by reverse engineering and are ready to cast the bronze bracelets recorded using the Lost Wax method. During the execution of the bracelets rapid prototyping method. The basis for the reconstruction of the former original antique molds fragments of bronze age obtained as a result of the cooperation of the Faculty of Foundry Engineering with the Museum of Copper in Legnica. Microscopic and defectoscopic examination have made it possible for accurate knowledge technology and have made it possible to make bracelets, make the measurements, which are then used to perform three-dimensional reconstruction of the finished product. As a result, received ready cast bracelet, events that approximate the shapes of ornaments produced in the Bronze Age.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3 spec.; 185-190
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Symulacja spiętrzania stopu w komorze zimnokomorowej maszyny ciśnieniowej
Simulation of the Alloy Up-rise in the Shot Chamber of Cold Chamber HPDC machine
Autorzy:
Wiktor, T.
Burbelko, A.
Powiązania:
https://bibliotekanauki.pl/articles/380113.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
komputerowe wspomaganie
produkcja odlewnicza
program ProCAST
maszyna ciśnieniowa
jakość odlewu
okluzja powietrza
computer support
foundry production
ProCAST program
HPDC machine
cast quality
air occlusion
Opis:
Technologia odlewania do form metalowych z wykorzystaniem wysokiego ciśnienia jest jednym ze sposobów wytwarzania odlewów precyzyjnych. Forma metalowa zapewnia precyzję odwzorowania wymiarów gotowego wyrobu, lecz z powodu szczelności materiału, z którego jest wykonana, utrudnia odprowadzanie powietrza z wnęki. Dodatkowo powstawaniu okluzji powietrza sprzyja wysoka prędkość strugi i związany z tym skomplikowany charakter ruchu ciekłego metalu wewnątrz formy. W największym stopniu problem okluzji powietrza występuje w maszynach zimnokomorowych z poziomą komorą wtrysku. W maszynach tego typu dodatkowym źródłem gazów w odlewie może być niewłaściwy przebieg pierwszej fazy pracy maszyny ciśnieniowej. W pracy za pomocą symulacji komputerowych z wykorzystaniem oprogramowania ProCAST (ESI Group®) przeanalizowano zmiany kształtu swobodnej powierzchni stopu EN-AC 44300 AlSi12(Fe) podczas jego spiętrzania w komorze prasowania. Przeanalizowano wpływ prędkości ruchu tłoku, długości komory i stopnia jej wypełnienia na poprawny przebieg tego procesu.
High Pressure Die Casting gives the possibility to produce the cast products with a high precision. Unfortunately, physical properties of the metal molds prevent the air evacuation from the mold cavity. High velocity of the stream and of the free surface movement as well as complicated character of the liquid metal movement prevent the air evacuation and promote the occlusions in the casting. Risk of the air occlusion is the highest in the case of the cold-chamber machines with a horizontal press-chambers. In the HP die casters of this type the addition source of the gas in the casting is the improper evolution of the alloy free surface during the first stage of the cycle (alloy up-rise). In this paper the evolution of the free surface of the EN-AC 44300 AlSi12(Fe) alloy was analyzed by ProCAST software (ESI Group®) in the HP chamber during the first stage of the working cycle. The influence of the piston velocity, shot chamber length and initial level of the alloy in the shot chamber on the behavior of the alloy free surface at this stage was analyzed.
Źródło:
Archives of Foundry Engineering; 2015, 15, 4 spec.; 151-154
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of SCADA Systems in Control of Green Sands Properties
Autorzy:
Ignaszak, Z.
Sika, R.
Perzyk, M.
Kochański, A.
Kozłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/381589.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer aided foundry production
SCADA systems
data acquisition
green sands
green sand properties
wspomaganie komputerowe produkcji
produkty odlewnicze
system SCADA
pozyskiwanie danych
piasek formierski
Opis:
The paper undertakes an important topic of evaluation of effectiveness of SCADA (Supervisory Control and Data Acquisition) systems, used for monitoring and control of selected processing parameters of classic green sands used in foundry. Main focus was put on process studies of properties of so-called 1st generation molding sands in the respect of their preparation process. Possible methods of control of this processing are presented, with consideration of application of fresh raw materials, return sand (regenerate) and water. The studies conducted in one of European foundries were aimed at pointing out how much application of new, automated plant of sand processing incorporating the SCADA systems allows stabilizing results of measurement of selected sand parameters after its mixing. The studies concerned two comparative periods of time, before an implementation of the automated devices for green sands processing (ASMS - Automatic Sand Measurement System and MCM – Main Control Module) and after the implementation. Results of measurement of selected sand properties after implementation of the ASMS were also evaluated and compared with testing studies conducted periodically in laboratory.
Źródło:
Archives of Foundry Engineering; 2016, 16, 1; 5-12
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda CALPHAD – nowoczesna technika pozyskiwania danych termodynamicznych
Autorzy:
Wróbel, M.
Burbelko, A.
Powiązania:
https://bibliotekanauki.pl/articles/380073.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
komputerowe wspomaganie produkcji odlewniczej
metoda CALPHAD
wykres fazowy Fe-C
temperatura zalewania
obróbka cieplna
computer aided foundry production
CALPHAD method
phase diagram of Fe-C
thermal treatment
Opis:
Pierwsze spotkanie z metodą CALPHAD zazwyczaj zaczyna się od pytania co właściwie można za jej pomocą obliczyć? Niniejsza praca przytacza kilka przykładów w jaki sposób można pozyskać interesujące nas rezultaty obliczeń oraz jak je interpretować, a także definiuje obszar, w którym to podejście jest pomocne. Pokazano wzory obliczeń pomocnych przy wyznaczaniu parametrów procesów technologicznych, takich jak temperatury zalewania oraz obróbki cieplnej. Przedstawiono również sposób wyznaczenia wpływu pierwiastków stopowych na przesunięcie punktów w układzie żelazo-węgiel. Podano ideę obliczeń równowagowych oraz nierównowagowych aby pomóc w zdaniu sobie sprawy, że same wyniki są tylko jednym z elementów potrzebnych do zrozumienia rozważanego układu oraz, że wymagana jest odpowiednia znajomość materiału, nad którym się pracuje, aby dojść do wiarygodnych wniosków. Zostało także zaznaczone, że metoda CALPHAD, dzięki możliwości obliczeń układów wyższych rzędów z uwzględnieniem wielu faz, jest niezmiernie pomocna w tematach związanych z modelowaniem przemian fazowych.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3 spec.; 79-84
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production Scheduling for the One Furnace – Two Casting Lines System
Autorzy:
Basiura, R.
Duda, J.
Stawowy, A.
Powiązania:
https://bibliotekanauki.pl/articles/379848.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information technology
foundry industry
production planning
production scheduling
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie produkcji
Opis:
The paper presents a scheduling production problem in foundry equipped with one furnace and two casting lines, which provides a number of different types of castings for a large number of clients. The amount of molten metal may not be greater than the capacity of the furnace and its load is a type of metal, from which the products are manufactured on automated casting lines. The purpose of planning is to create the processing order of metal, to prevent delays in the delivery of the ordered products to the customers. This problem is mixt of lot-sizing problem and scheduling problem on two machines (the lines) running in parallel. The article gives a mathematical model, which formally defines the optimization problem, and his relaxed version which is based on the concept of rolling-horizon planning. The proposed approaches were tested on the sample data.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2 spec.; 3-6
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality Management in the Manufacturing Process of Iron Casts on Foundry Lines
Autorzy:
Kukla, S.
Powiązania:
https://bibliotekanauki.pl/articles/379693.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quality management
foundry industry
production systems
production organization
costs estimation
zarządzanie jakością
przemysł odlewniczy
systemy produkcyjne
organizacja produkcji
Opis:
The paper presents issues of quality management related to iron casts manufactured on automated foundry lines for automobile industry. The influence of the choice of electric furnace and automated foundry line with vertical or horizontal mould division on the quality of casts made of nodular or grey cast iron was presented. Analysis of different scenarios of the course of action manufacturing processes was performed basing on a simulation experiment, record data related to the quality of the manufactured casts and manufacturing prime costs analysis. The research used universal tools applied in simulation analysis of production systems (Rockwell Automation: Arena Simulation Software) and a spreadsheet used for cast manufacture cost estimation. The proposed variants have been assessed using the Pareto analysis on the basis of results of reports generated for a simulation experiment. The paper also presents suggestions of activities aimed at further improvement of the quality of foundry processes.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1 spec.; 13-16
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the Organization of Iron Casts Finishing Processes
Autorzy:
Kukla, S.
Powiązania:
https://bibliotekanauki.pl/articles/380666.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information technology
foundry industry
automation in foundry
robotics in foundry
multicriteria variants analysis
modelling of production systems
simulation of production systems
work ergonomics
technologia informatyczna
przemysł odlewniczy
automatyka w odlewnictwie
robotyka w odlewnictwie
modelowanie systemów produkcji
symulacja systemów produkcyjnych
ergonomia pracy
Opis:
The paper presents issues of production processes improvement in foundries in terms of finishing treatment of iron casts on grinding workstations. Basing on the conducted analysis of work ergonomics on the grinding line and the observation of work at workstations, a range of improvements related to organizing grinding treatment processes was proposed. In order to visualize the production system functioning and estimate its efficiency, a simulation model of a grinding line has been created, on which a simulation experiment was carried out. Due to many factors influencing the effectiveness of processes, it was suggested to use multi-criteria evaluation tools to choose the most rational solution. Three criteria have been assumed, according to which particular improvement variants were evaluated. Also, criteria weights have been set according to the Saaty’s method, and particular solution variants have been assessed separately with respect to each criterion. On the basis of the presented course of action, the best solution has been selected from among the analyzed options.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2 spec.; 55-58
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production scheduling for the furnace - casting line system
Autorzy:
Stawowy, A.
Duda, J.
Powiązania:
https://bibliotekanauki.pl/articles/382138.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information technology
foundry industry
production planning
scheduling
technologia informacyjna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie
Opis:
The problem considered in the paper is motivated by production planning in a foundry equipped with the furnace and casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The quantity of molten metal does not exceed the capacity of the furnace, the load is a particular type of metal from which the products are made in the automatic casting lines. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. The paper describes two computational intelligence algorithms for simultaneous grouping and scheduling tasks and presents the results achieved by these algorithms for example test problems.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 84-87
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production Scheduling under Fuzziness for the Furnace - Casting Line System
Autorzy:
Duda, J.
Stawowy, A.
Powiązania:
https://bibliotekanauki.pl/articles/380049.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information technology
foundry industry
production planning
production scheduling
fuzzy number
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie produkcji
liczba rozmyta
Opis:
The problem considered in the paper is motivated by production planning in a foundry equipped with a furnace and a casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. However, contrary to the classic approach, we assumed the fuzzy nature of the demand set for a given day. The paper describes a genetic algorithm adapted to take into account the fuzzy parameters of simultaneous grouping and scheduling tasks and presents the results achieved by the algorithm for example test problem.
Źródło:
Archives of Foundry Engineering; 2015, 15, 4; 29-32
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-agent Approach to Production Scheduling in Foundries
Autorzy:
Duda, J.
Stawowy, A.
Powiązania:
https://bibliotekanauki.pl/articles/380130.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information technology
foundry industry
production planning
production scheduling
multiagent approach
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie produkcji
system wieloagentowy
Opis:
The paper describes a complete framework that uses a multi-agent approach for production scheduling in a foundry. Different types of autonomous agents have been designed, each playing a different role in the supply chain management of the fodundry, along with their responsibility and behavior in the system. In order to generate a proper and reliable schedule the agents negotiate with each other by sending messages compliant to FIPA ACL standard. A prototype of the system has been implemented in JADE and allowed to conduct preliminary simulation of the system. Although some agents some agents have been omitted in the prototype, it was possible to verify the main assumptions of the system, as well as, to indicate and discuss potential problems with its implementation into production practice.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2 spec.; 17-22
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The framework of agent-based negotiation platform for foundries cooperating in supply chain
Autorzy:
Kluska-Nawarecka, S.
Regulski, K.
Rojek, G.
Powiązania:
https://bibliotekanauki.pl/articles/379687.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information technology
foundry industry
innovative foundry technologies
innovative foundry materials
ontology
agent technology
production support
technologia informacyjna
przemysł odlewniczy
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
ontologia
technologia agentowa
wspomaganie produkcji
Opis:
This paper concerns the domain of contracts in the metallurgy and heavy industry, that are the form of deals making between cooperating companies being suppliers and consumers of some goods. From a general point of view cooperation enables for small companies to realize orders that are too large for an individual producer, but contract negotiations, further scheduling and support of production are usually too difficult and complicated. This paper presents a proposition of an information system, that should make cooperation between companies more available. Such system should be distributed among cooperating producers, what is the reason for choosing of the agent technology as the main software paradigm. This system should also support interchanging of information in many norms and technical standards, what results in the use of ontology concerning metallurgy and heavy industry.
Źródło:
Archives of Foundry Engineering; 2013, 13, 4; 73-78
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Models and algorithms for production planning and scheduling in foundries - current state and development perspectives
Autorzy:
Stawowy, A.
Duda, J.
Powiązania:
https://bibliotekanauki.pl/articles/382778.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
szeregowanie zadań
information technology
foundry industry
production planning
scheduling
Opis:
Mathematical programming, constraint programming and computational intelligence techniques, presented in the literature in the field of operations research and production management, are generally inadequate for planning real-life production process. These methods are in fact dedicated to solving the standard problems such as shop floor scheduling or lot-sizing, or their simple combinations such as scheduling with batching. Whereas many real-world production planning problems require the simultaneous solution of several problems (in addition to task scheduling and lot-sizing, the problems such as cutting, workforce scheduling, packing and transport issues), including the problems that are difficult to structure. The article presents examples and classification of production planning and scheduling systems in the foundry industry described in the literature, and also outlines the possible development directions of models and algorithms used in such systems.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 69-74
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Theory of Constraints as a Method of Results Optimization in Complex Organization
Autorzy:
Janosz, M.
Powiązania:
https://bibliotekanauki.pl/articles/382239.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
theory of constraints
optimization of production organization
foundry performance
teoria ograniczeń
organizacja produkcji
wydajność odlewni
Opis:
The paper presents the theory of constraints (TOC) as a method used to improve results in a complex, multiplants organization. In the article the assumptions of this method has been presented as well as iterative approach concerning how to launch it in practice. Main indicators for organizational effectiveness assessment have also been presented. The maximization of production assets utilization is a key issue for competitive organization in the changing market conditions. An appropriate usage of the theory of constraints enables efficient allocation of financial assets among particular plants within a capital group. An application of a method has been presented based on throughput analyses and its influence to improve financial results of one plant organization and synergy effect in multiplants organization. The theory of constraints can be used in almost every kind of business sectors, among them are metal and foundry industries. It allows to be implemented in production organizations as well as in any other company’s profiles. Everywhere the constraint has been defined there is a chance to achieve an improvement following the presented method. The examples have been taken from the casting plants which use continuous and mold casting technologies. The examples show that TOC approach can be successfully employed as the improvement tool of foundries’ performances.
Źródło:
Archives of Foundry Engineering; 2018, 18, 4; 59-64
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical Programming for Lot Sizing and Production Scheduling in Foundries
Autorzy:
Duda, J.
Stawowy, A.
Basiura, R.
Powiązania:
https://bibliotekanauki.pl/articles/380801.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
application of information technology
foundry industry
production planning
scheduling
zastosowanie technologii informatycznych
przemysł odlewniczy
planowanie produkcji
Opis:
The problem considered in the paper is motivated by production planning in a foundry equipped with the furnace and casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The quantity of molten metal does not exceed the capacity of the furnace, the load is a particular type of metal from which the products are made. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. The paper describes a mathematical programming model that formally defines the optimization problem and its relaxed version that is based on the conception of rolling-horizon planning.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3; 17-20
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Management of Assortment Inventory Groups in Selected Foundry
Autorzy:
Szymszal, J.
Kuczyńska-Chałada, M.
Król, J.
Powiązania:
https://bibliotekanauki.pl/articles/383060.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer support
casting production
supply logistics
foundry plant
wspomaganie komputerowe
produkcja odlewnicza
logistyka zaopatrzenia
zakład odlewniczy
Opis:
As experience shows the practical, reliable assessment and optimisation of total costs of logistical processes implemented in supply chains of foundry plants is a quite complex and complicated process, because it requires to enclose all, without exception, performed actions, including them in various reference cross-sections, systematic activities and finally transforming them in a totally homogenous collection. Only solid analysis and assessment of assortment management in logistical supply systems in foundry plants of particular assortment groups allows to lower the supply costs significantly. In the article the analysis and assessment of the newest implemented optimising algorithms are presented in the process stock management of selected material groups used in a production process of a chosen foundry plant. A practical solution to solve a problem of rotary stock cost minimisation is given as well as of costs while creating a stock with the usage of economical volume and value of order.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3; 67-70
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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