Autor: Kowalski, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: ADI after austenitising from intercritical temperature
Autorzy:: Kowalski, A.
Kluska-Nawarecka, S.
Regulski, K.
Powiązania:: https://bibliotekanauki.pl/articles/379994.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ductile cast iron
austempering
microstructure
mechanical properties
fuzzy logic
żeliwo sferoidalne
hartowanie izotermiczne
mikrostruktura
właściwości mechaniczne
logika rozmyta
Opis:: ADI subjected to austenitising at intercritical temperatures contains in its matrix the precipitates of pre-eutectoid ferrite. Studies were carried out on the ductile iron of the following chemical composition: C = 3,80%, Si = 2,30%, Mn = 0,28%, P = 0,060%, S = 0,010%, Mg = 0,065%, Ni = 0,60%, Cu = 0,70%, Mo = 0,21%. This cast iron was austenitised at three different temperatures, i.e. 800, 815 and 830ºC and austempered at 360 and 380ºC. For each variant of the cast iron heat treatment, the mechanical properties, i.e. YS, TS, EL and Hardness, were measured, and structure of the matrix was examined. Higher plastic properties were obtained owing to the presence of certain amount of pre-eutectoid ferrite. The properties were visualised using fuzzy logic model in a MATLAB. software.
Źródło:: Archives of Foundry Engineering; 2013, 13, 1; 81-88
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Comparison of Quality of Investment Castings Produced Based on the Rapid Prototyping Techniques with Products of Powder Sintering
Autorzy:: Karwiński, A.
Haratym, A.
Soroczyński, A.
Kowalski, P.
Powiązania:: https://bibliotekanauki.pl/articles/382602.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: investment casting
powder sintering
casting quality
odlewnia
spiekanie proszku
jakość odlewu
Opis:: The proposed research work will be related to the comparison of the dimensional accuracy and surface roughness of elements produced by two different methods. Castings are made using modern rapid prototyping techniques and investment casting. For selected parts there will be presented an assessment in terms of manufacturability, design manufacturing costs, operating parameters and energy consumption of production. The analysis of used methods allow for the evaluation of their suitability as alternative manufacturing techniques.
Źródło:: Archives of Foundry Engineering; 2014, 14, 3 spec.; 31-34
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Use of Rapid Prototyping Methods to Perform Flexible Pattern Mold for Compressor Turbine Casting in the Gypsum Molds
Autorzy:: Wańczyk, K.
Gil, A.
Kowalski, P.
Powiązania:: https://bibliotekanauki.pl/articles/383307.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: rapid prototyping
gypsum mould
casting technology
prototypowanie szybkie
masa gipsowa
technologia odlewnicza
Opis:: There are many different casting technologies and their selection depends on the criteria to be met by a cast made. One of the less frequently used precision casting technology is a technology that uses gypsum block forms. From many years are available pre-mixed gypsum for the various alloys, and mold making technology itself can be based on melted wax models or models permanent removed from the mold after hardening the gypsum mix. In case of use permanent models to produce them may be used various types of flexible materials. This solution allows you to make complicated models that can be removed from the mold only by the fact that they are flexible and at the same time capable of large elastic deformations.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3 spec.; 95-98
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Badanie zmian wymiarowych materiałów na formy silikonowe w różnych temperaturach za pomocą optycznego skanera 3D
Dimensional Change Research Materials on Silicon Format Different Temperatures Using Optical 3D Scanner
Autorzy:: Gil, A.
Wańczyk, K.
Kowalski, P.
Powiązania:: https://bibliotekanauki.pl/articles/381053.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: badania nieniszczące
szybkie prototypowanie
forma silikonowa
skanowanie 3D
kontrola wymiarowa
nondestructive testing
rapid prototyping
silicone mould
3D scanning
dimensional control
Opis:: W artykule przedstawiono badania rozszerzalności temperaturowej wybranych gum silikonowych stosowanych na matryce elastyczne do wykonywania modeli woskowych w metodach szybkiego prototypowania. Pomiary prowadzono w warunkach odzwierciedlających rzeczywiste parametry pracy, gdy formy silikonowe są podgrzewane przed zalaniem ich ciekłym woskiem. Jako narzędzie pomiarowe wykorzystano trójwymiarowy skaner optyczny ATOS III. Pomiary zmian wymiarowych próbek silikonów prowadzono w wybranych temperaturach w zakresie od 25 do 100 ˚C przy jednoczesnej rejestracji przebiegu zmian temperatur w objętości nagrzewanych próbek. Uzyskane wyniki pomiarów przedstawiono w tabeli oraz na wykresie, wraz z wykresem z rejestracji przebiegu zmian rozkładu temperatur w objętości badanych próbek podczas nagrzewania. Efektem końcowym prowadzonych prac było określenie rozszerzalności form silikonowych, co w zastosowaniu praktycznym będzie wykorzystywane do uzyskiwania modeli woskowych o większej dokładności wymiarowej.
This article presents research the expansion of selected temperature silicone rubber used on elastic mold to make wax models in rapid prototyping methods. Measurements were carried out in conditions reflecting real operating parameters of when the silicone molds are heated before pouring the liquid wax. As a measurement tool used for three-dimensional optical scanner ATOS III. Measurements of structural silicone samples was performed at selected temperatures range from 25 to 100 ˚C while recording the temperature changes in the volume of heated samples. The results of measurements are shown in the table and the graph, along with a graph of the data recorder of the temperature distribution changes in the volume of the sample during heating. The end result of the work was to determine the expansion silicone molds, which in practical application will be used to receive wax models of higher dimensional accuracy.
Źródło:: Archives of Foundry Engineering; 2013, 13, 2 spec.; 43-47
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Numerical Analysis of Casting Process of the Diesel Engine Compressor Rotor
Autorzy:: Kowalski, P.
Wańczyk, K.
Małysza, M.
Gil, A.
Powiązania:: https://bibliotekanauki.pl/articles/382921.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: pressure over vacuum
casting process
computer simulation
aluminium alloy
proces odlewniczy
symulacja komputerowa
stop aluminium
Opis:: Application of simulation analysis has become increasingly inseparable part of the design process of casting technology. The possibility of a virtual observation of the temperature distribution, heat transfer between the liquid metal and the mould, evaluation of the nature of the liquid metal flow are values that are impossible to monitor during real-time production. Through the computer simulations, there is a possibility of a preliminary assessment of the phenomenon without the need for expensive and time consuming trials. On the example of the diesel engine compressor rotor the process of preparation of foundry technology, simulation analysis, the visualization of filling of the mold cavity and solidification of the liquid metal was presented. The casting was performed on the VC3000D INDUTHERM furnace that uses the phenomenon of POV (Pressure over Vacuum).
Źródło:: Archives of Foundry Engineering; 2015, 15, 2 spec.; 51-54
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Bronze Jewellery from the Early Iron Age urn-field in Mała Kępa. An approach to casting technology
Autorzy:: Garbacz-Klempka, A.
Kowalski, Ł.
Gackowski, J.
Perek-Nowak, M.
Powiązania:: https://bibliotekanauki.pl/articles/379760.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: bronze jewellery
non-destructive testing
investment casting
X-ray fluorescence spectroscopy
archaeometallurgy
Lusatian culture
biżuteria z brązu
badania nieniszczące
odlewnictwo
spektroskopia rentgenowska
archeometalurgia
kultura łużycka
Opis:: This study characterizes the bronze jewellery recovered from the Lusatian culture urn-field in Mała Kępa (Chełmno land, Poland). Among many common ornaments (e.g. necklaces, rings, pins) the ones giving evidence of a steppe-styled inspiration (nail earrings) were also identified. With the dendritic microstructures revealed, the nail earrings prove the implementing of a lost-wax casting method, whereas some of the castings were further subjected to metalworking. The elemental composition indicates the application of two main types of bronze alloys: Cu-Sn and Cu-Sn-Pb. It has been established that the Lusatian metalworkers were familiar with re-melting the scrap bronze and made themselves capable of roasting the sulphide-rich ores. The collection from Mała Kępa has been described in terms of its structure and composition. The investigations were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF), scanning electron microscopy (SEM) coupled with an energy dispersive X - ray analysis system (EDS) and optical microscopy (OM). In order to fingerprint an alloy profile of the castings with a special emphasis on the nail earrings, the data-set (ED-XRF, EDS) was statistically evaluated using multidimensional analyses (FA, DA).
Źródło:: Archives of Foundry Engineering; 2017, 17, 3; 175-183
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Ceramic-Carbon Filters for Molten Metal Alloys Filtration
Autorzy:: Asłanowicz, M.
Ościłowski, A.
Lipowska, B.
Witek, J.
Robak, Z.
Muzyka, R.
Kowalski, P.
Wańczyk, K.
Powiązania:: https://bibliotekanauki.pl/articles/381136.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative materials
molten metals
filtration
foam filter
technological line
innowacyjne technologie odlewnicze
innowacyjne materiały
topnienie metali
filtracja
filtr piankowy
linia technologiczna
Opis:: In 2014 we finished research works involved in the development of a technology for manufacturing innovative ceramic-carbon foam filters for molten metal alloys filtration, which were financed by the National Centre for Research and Development (NCBiR) from INNOTECH programme resources. A batch of the filters produced in this technology was tested in practice in domestic cast steel and cast iron foundries. The trials were successful and foundries declared their intention to purchase the newly-developed filters for the current production of casts. This provided an incentive for “Ferro-Term” Sp. z o.o. to start design works on the prototype line for a serial production of these filters. At the same time, in co-operation with a scientific consortium, including the co-authors of the technology, i.e. the Institute of Ceramics and Building Materials, Refractory Materials Division in Gliwice, Institute for the Chemical Processing of Coal in Zabrze and Foundry Research Institute in Cracow, the company made a successful attempt to raise some funds for the necessary adaptation of the developed technology from the semi-technical to industrial scale from Intelligent Development Operational Programme. In the article we have presented information on the effects of works performed within the framework of the project entitled “Modernization and adaptation of the existing technological line for purposes related to technology verification and start-up of the production of innovative ceramic-carbon filters for molten metal alloy filtration”.
Źródło:: Archives of Foundry Engineering; 2019, 1; 98-102
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Archaeometallurgical Investigations of the Early Iron Age Casting Workshop at Kamieniec. A Preliminary Study
Autorzy:: Garbacz-Klempka, A.
Kowalski, Ł.
Kozana, J.
Gackowski, J.
Perek-Nowak, M.
Szczepańska, G.
Piękoś, M.
Powiązania:: https://bibliotekanauki.pl/articles/383062.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: non-destructive testing
investment casting
X-ray fluorescence spectroscopy
archaeometallurgy
Lusatian culture
badania nieniszczące
odlewnictwo
promieniowanie rentgenowskie
kultura łużycka
Opis:: (Chełmno land, Poland) as it is reflected through casting workshop recovered during recent excavations. Among ready products, the ones giving evidence of local metallurgy (e.g. casting moulds and main runners) were also identified. With the shrinkage cavities and dendritic microstructures revealed, the artifacts prove the implementing a casting method by the Lusatian culture metalworkers. The elemental composition indicates application of two main types of bronzes: Cu-Sn and Cu-Pb. Aside these main alloying additions, some natural impurities such as silver, arsenic, antimony and nickel were found which may be attributed to the origin of the ore and casting technology. The collection from Kamieniec was described in terms of its structure and composition. The investigations were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF), scanning electron microscopy (SEM) coupled with an energy dispersive X-ray analysis system (EDS) and optical microscopy (OM). In order to fingerprint either local or non-local profile of the alloys, the ED-XRF data-set was statistically evaluated using a factor analysis (FA).
Źródło:: Archives of Foundry Engineering; 2016, 16, 3; 29-34
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Copper and Arsenical Copper During Eneolithic in Metallographic and Mechanical Properties Examination
Autorzy:: Garbacz-Klempka, A.
Kozana, J.
Piękoś, M.
Cieślak, W.
Perek-Nowak, M.
Kowalski, Ł.
Adamczak, K.
Łoś, J.
Powiązania:: https://bibliotekanauki.pl/articles/382382.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nondestructive testing
copper
arsenical copper
archaeometallurgy
casting
metallographic properties
Eneolith
badania nieniszczące
miedź
archeometalurgia
odlewnictwo
właściwości metalograficzne
epoka miedzi
Opis:: Arsenical copper has been used since 5^th millennium cal.BC, later exchanged by application of Cu-Sn alloys in metallurgy. This work presents the results of metallographic and mechanical properties studies performed on two flat axes connected with local Eneolithic societies (4500-3000 cal.BC). The axes are one of the oldest metal artifacts from Polish land. Originally they were made from Cu-As alloy, and their chemical composition was established by X-ray fluorescence spectroscopy (XRF). Their microstructure was analysed using optical microscopy (OM) and scanning electron microscopy conducted with energy-dispersive X-ray spectroscopy (SEM-EDS). The macrostructure analysis (OM) of the axes was performed as well. On the basis of the results, the alloys used in the Eneolithic to cast the axes were reproduced in lab. In order to achieve the characteristics of the alloys, their mechanical properties including ultimate tensile strenght (UTS), hardness (HB), microhardness (HV0,1) and ductility were examined. The solidification process was studied by means of thermal analysis.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4 spec.; 23-28
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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