Temat: investment technology - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Investigations of properties of wax mixtures used in the investment casting technology - new investigation methods
Autorzy:: Zych, J.
Kolczyk, J.
Snopkiewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/380353.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: technologia odlewnicza
skurcz liniowy
wytrzymałość
elastyczność
investment casting technology
linear shrinkage
strength
elasticity
Opis:: The results of testing of the selected group of wax mixtures used in the investment casting technology, are presented in the paper. The measurements of the kinetics of the mixtures shrinkage and changes of viscous-plastic properties as a temperature function were performed. The temperature influence on bending strength of wax mixtures was determined.
Źródło:: Archives of Foundry Engineering; 2012, 12, 3; 133-138
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Badania właściwości mieszanek woskowych stosowanych w technologii wytapianych modeli – nowe metody badań
Investigations of properties of wax mixtures used in the investment casting technology – new investigation methods
Autorzy:: Zych, J.
Kolczyk, J.
Snopkiewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/382464.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: technologia wytapianych modeli
skurcz liniowy
wytrzymałość materiałów
sprężystość materiałów
investment casting technology
linear shrinkage
material strength
material elasticity
Opis:: W pracy przedstawiono wyniki badań wybranej grupy mieszanek woskowych stosowanych w technologii wytapianych modeli. Wykonano badania kinetyki skurczu mieszanek i przebiegu zmian właściwości lepko-sprężystych w funkcji temperatury. Wyznaczono wpływ temperatury na wytrzymałość na zginanie mieszanek woskowych.
The results of testing of the selected group of wax mixtures used in the investment casting technology, are presented in the paper. The measurements of the kinetics of the mixtures shrinkage and changes of viscous-plastic properties as a temperature function were performed. The temperature influence on bending strength of wax mixtures was determined.
Źródło:: Archives of Foundry Engineering; 2012, 12, 1s; 199-204
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Application of a New Innovative Ceramic Material for Investment Casting Technology
Autorzy:: Stefański, Z.
Izdebska-Szanda, I.
Angrecki, M.
Powiązania:: https://bibliotekanauki.pl/articles/381703.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technology
innovative foundry materials
investment casting technology
olivine sand
self-supporting mould
Innowacyjna technologia odlewnicza
innowacyjne materiały odlewnicze
odlewnictwo
forma odlewnicza
Opis:: The article presents the research results of a new ceramic material, in which olivine sand was used as the matrix. This new ceramic material was studied at the angle of its application in the investment casting technology. This material will be mainly used for preparing self-supporting moulds for castings made of aluminium and magnesium alloys, replacing the expensive material – molochite which has been used so far. The article presents the results of mineralogical research of olivine sand, as well as thermophysical research of the new ceramic material made on the olivine sand matrix. Comparative research of both materials was conducted, i.e. with the olivine and molochite matrix, then the assessment of the quality of the new ceramic material was made. What is more, the research results of the developed ceramics and its usefulness for the production of castings are presented.
Źródło:: Archives of Foundry Engineering; 2014, 14, 1 spec.; 51-56
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Corrosion Resistance and Microstructure of Recasting Cobalt Alloys Used in Dental Prosthetics
Autorzy:: Loch, J.
Krzykała, A.
Łukaszczyk, A.
Augustyn-Pieniążek, J.
Powiązania:: https://bibliotekanauki.pl/articles/380935.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: investment casting technology
ceramic moulds
dental prosthetics
cobalt alloys
corrosion resistance
technologia odlewania
formy ceramiczne
protetyka stomatologiczna
stopy kobaltu
odporność na korozję
Opis:: The work presents the results of the studies of Co-Cr-Mo casting alloys used in the production of frame casts of removable dentures, crowns and bridges in dental prosthetics. The studies were performed on four Co-Cr-Mo alloys of different contents of Mo, W and other additives. Electrochemical tests were performed, which aimed at examining the corrosion resistance of the alloys and observing the alloy structure after chronoamperometric tests with the potential in the area of the occurrence of the passive layer breakpoint. The alloy microstructure images after chronoamperometric tests show the presence of non-uniformly distributed general corrosion. Moreover, a project of cobalt alloy casting was elaborated using a ceramic mold casting. Additionally, analysis of the obtained microstructure was performed. The microstructure of the examined alloys was of the dendrite type. This microstructure was chemically inhomogeneous and consisted of an austenitic matrix formed by a solid cobalt solution and chromium in the core dendritic structure.
Źródło:: Archives of Foundry Engineering; 2017, 17, 2; 63-68
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influence of the Selected Factors on the Ceramic Moulds Permeability Determined by the New Method
Autorzy:: Kolczyk, J.
Zych, J.
Jamrozowicz, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/382719.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
investment casting technology
permeability
ceramic moulds
innowacyjne technologie odlewnicze
materiały odlewnicze
technologia odlewania
przepuszczalność
formy ceramiczne
Opis:: Ceramic moulds in the investment casting technology are made by depositing on the wax pattern subsequent layers of a liquid ceramic mass together with a granular matrix. A quality of castings depends on building of individual layers. The results of the ceramic moulds permeability obtained by means of the newly developed measuring method are presented in the hereby paper. Due to the applied solution it is possible to perform measurements also for the first layers which have the decisive influence on a permeability of the whole multilayer ceramic mould. Investigations of the influence of the matrix grain size and annealing temperature on the permeability of ceramic moulds were carried out.
Źródło:: Archives of Foundry Engineering; 2015, 15, 1 spec.; 55-60
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Technologia wytapianych modeli w zastosowaniu dla stopów miedzi
Investment Casting Technology Applied to Copper Alloys
Autorzy:: Rzadkosz, S.
Kranc, M.
Garbacz-Klempka, A.
Kozana, J.
Piękoś, M.
Powiązania:: https://bibliotekanauki.pl/articles/381118.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innowacyjny materiał odlewniczy
innowacyjna technologia odlewnicza
metalografia
wada odlewu
technologia wytapianych modeli
stop miedzi
innovative foundry material
innovative foundry technology
metallography
casting defect
investment casting technology
copper alloy
Opis:: Technologia wytapianych modeli należy do najstarszych technologii odlewniczych. Historycznie służyła do odlewania narzędzi, broni i ozdób. Model wykonany z wosku pszczelego oblepiano gliną suszono i wypalano. Otrzymywano odlewy o dużej gładkości powierzchni, dokładności i precyzji wykonania ornamentu. Metodą tą odlewano niewielkie kilkugramowe odlewy jak i wielkogabarytowe pomniki. Współcześnie ta technologia jest wykorzystywana w wielu ważnych gałęziach produkcji zarówno artystycznej, jak i przemysłowej. Szczególnie w przemyśle zbrojeniowym, lotniczym, motoryzacyjnym, energetycznym, budowlanym, a nawet kosmicznym. W pracy przedstawiono wyniki badań i eksperymentów, prowadzonych w zakresie technologii odlewnictwa miedzi i stopów miedzi z zastosowaniem metody wytapianych modeli, zarówno w aspekcie historycznym, jak i współczesnej praktyki przemysłowej. Przykładowo przedstawiono analizę wybranych elementów dawnych technologii, form i odlewów wytworzonych w epoce brązu oraz wyniki badań dotyczące aktualnie produkowanych odlewów dla branży energetycznej. Jakość odlewów została oceniona na podstawie przeprowadzonych badań z zakresu mikrostruktury, składu chemicznego, przewodności elektrycznej i zawartości tlenu.
Investment casting technology belongs to the oldest casting techniques. Historically, it was used for casting tools, weapons and ornaments. A model, made from beeswax, was covered in loam, dried and fired. The casts obtained were characterised by high surface smoothness, accuracy and precision of its ornaments. This method was used for relatively small casts as well as for big monuments. Nowadays, this technology is used in many fields of manufacturing, both artistic and industrial, especially in ornaments, aviation, automotive, power, construction and even space industry. This work presents the results of research and experiments conducted in the field of casting technology of copper and copper alloys, applying the investment casting method, both in its historical aspect and modern industrial practice. An exemplary analysis was presented of the chosen elements of the old technologies, moulds and casts, as well as the results of casts made currently for the power industry. The casts quality was evaluated based on the research of their microstructure, chemical composition, electrical conductivity and oxygen content.
Źródło:: Archives of Foundry Engineering; 2013, 13, 3 spec.; 143-148
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: New investigation method of the permeability of ceramic moulds applied in the investment casting technology
Nowa metoda oceny przepuszczalności form ceramicznych stosowanych w technologii wytapianych modeli
Autorzy:: Zych, J.
Kolczyk, J.
Snopkiewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/379502.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
investment casting technology
permeability
ceramic mould
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
technologia wytapianych modeli
przepuszczalność
forma ceramiczna
Opis:: The new investigation method of a permeability of ceramic moulds applied in the investment casting technology, is presented in the paper. Some concepts of performing permeability measurements are shown. Investigations in which the influence of the solid phase fraction in the liquid ceramic moulding sand (LCMS) on a permeability of a multi-layer ceramic mould were performed and discussed. The permeability was estimated during two the most important stages of the technological process: in the first – after wax melting and in the second – after mould annealing. Also an influence of the matrix grain sizes (material for sprinkling) on a ceramic mould permeability was estimated.
W pracy przedstawiono nową metodę badań przepuszczalności form ceramicznych stosowanych w technologii wytapianych modeli. Zaprezentowano koncepcje prowadzenia pomiarów przepuszczalności form ceramicznych. Wykonano badania, w których określono wpływ udziału fazy stałej w ciekłej masie ceramicznej (CMC) na przepuszczalność wielowarstwowej formy ceramicznej. Oceniono przepuszczalność w dwóch najważniejszych etapach procesu technologicznego: w pierwszym - po wytopienia wosku oraz w drugim - po wyżarzeniu formy. Oceniono również wpływ wielkości ziarna osnowy, zwanej potocznie „obsypką” (materiałem do obsypywania), na przepuszczalność formy ceramicznej.
Źródło:: Archives of Foundry Engineering; 2013, 13, 2; 107-112
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Influence of the Al₂O₃ Solid Phase on the Kinetics of Binding Ceramic Moulds
Autorzy:: Kolczyk, J.
Zych, J.
Jamrozowicz, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/380203.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technology
innovative foundry material
investment casting technology
ultrasonic test
ceramic mould
aqueous binder
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
technologia wytapianych modeli
pomiar ultradźwiękowy
forma ceramiczna
spoiwo wodniste
Opis:: The investigation results of the kinetics of binding ceramic moulds, in dependence on the solid phase content in the liquid ceramic slurries being 67, 68 and 69% - respectively, made on the basis of the aqueous binding agents Ludox AM and SK. The ultrasonic method was used for assessing the kinetics of strengthening of the multilayer ceramic mould. Due to this method, it is possible to determine the ceramic mould strength at individual stages of its production. Currently self-supporting moulds, which must have the relevant strength during pouring with liquid metal, are mainly produced. A few various factors influence this mould strength. One of them is the ceramic slurry viscosity, which influences a thickness of individual layers deposited on the wax model in the investment casting technology. Depositing of layers causes increasing the total mould thickness. Therefore, it is important to determine the drying time of each deposited layer in order to prevent the mould cracking due to insufficient drying of layers and thus the weakening of the multilayer mould structure.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 91-96
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of Inhibitor Coating of a Ceramic Mould on the Surface Quality of an AM60 Alloy Cast with Cr and V
Autorzy:: Pisarek, B. P.
Rapiejko, C.
Święcik, R.
Pacyniak, T.
Powiązania:: https://bibliotekanauki.pl/articles/380855.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative material
innovative technology
surface roughness
magnesium alloy
solid inhibitor
investment casting
innowacyjny materiał
technologia innowacyjna
chropowatość powierzchni
stop magnezu
odlew precyzyjny
Opis:: The work presents the results of the investigations of the effect of inhibitors coated on the internal walls of a ceramic mould on the quality of the obtained casts made of the AM60 alloy containing additions of chromium and vanadium. In order to reduce the reactivity of magnesium alloy cast by the technology of investment casting with the material of the mould and the ambient atmosphere, solid inhibitors were applied in the form of a mixture of KBF₄ and H₃BO₃ after the stage of mould baking and before the mould’s being filled with the liquid alloy. For the purpose of examining the effect of the inhibitors on the surface quality of the obtained casts, profilometric tests were performed and the basic parameters describing the surface roughness, R_a, R_z and R_m, were determined.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3; 51-56
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Taguchi Approach for Optimization of Parameters that Reduce Dimensional Variation in Investment Casting
Autorzy:: Bansode, S. N.
Phalle, V. M.
Mantha, S.
Powiązania:: https://bibliotekanauki.pl/articles/381195.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technology
innovative foundry material
investment casting
dimensional accuracy
Taguchi method
optimisation
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
odlewnictwo
dokładność wymiarowa
metoda Taguchi
optymalizacja
Opis:: Variation in final casting dimensions is a major challenge in the investment casting industry. Additional correction operations such as die tool reworking as well as coining operations affect foundry productivity significantly. In this paper influence of basic parameters such as wax material, mould material, number of ceramic coats and feed location on the dimensional accuracy of stainless-steel casting has been investigated. Two levels of each factor were chosen for experimental study. Taguchi approach has been used to design the experiment and to identify the optimal condition of each parameter for reduced dimensional deviation. Analysis of variance has been carried out to determine the contribution of each process parameter. The result reports that selected parameters have significant effect on the dimensional variability of investment casting. Mould material is the dominant parameter with the largest contribution followed by number of ceramic coats and wax material whereas feed location is having negligible contribution.
Źródło:: Archives of Foundry Engineering; 2019, 1; 5-12
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Temperature and microstructure characteristics of silumin casting AlSi9 made with investment casting method
Autorzy:: Pietrowski, S.
Rapiejko, C.
Powiązania:: https://bibliotekanauki.pl/articles/380337.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technology
innovative foundry material
lost wax molding
investment casting
silumin casting
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
metoda traconego wosku
odlewnictwo precyzyjne
odlew siluminowy
Opis:: This work presents the research result of the temperature distribution and the microstructure in certain parts of the field-glass body frame casting made from silumin AlSi9 using the investment casting method in the ceramic mould. It was proved that the highest temperature of the silumin appears in the sprue in which the silumin is in the liquid-solid state, though the process of silumin crystallization in the casting is finished. It was stated that in certain elements of the casting the side opposite to the runner crystallizes and cools fastest. The differences in the rate of crystalline growth and cooling of certain casting elements cause different microstructure in them which can also influence the mechanic properties. It is necessary to state that the temperature of the initial heating of the ceramic mold equal to 60ºC guarantees obtaining of the castings without defects and of little porosity. Incomplete modification of the silumin with strontium causes silica precipitation to appear close to the spherical ones.
Źródło:: Archives of Foundry Engineering; 2011, 11, 3 spec.; 177-186
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The deformation of wax patterns and castings in investment casting technology
Autorzy:: Herman, A.
Česal, M.
Mikeš, P.
Powiązania:: https://bibliotekanauki.pl/articles/382400.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: technologia informatyczna
przemysł odlewniczy
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
odlewanie precyzyjne
model odlewniczy
information technology
foundry industry
innovative foundry technologies
innovative foundry material
investment casting
wax patterns
Opis:: The dimensional accuracy of the final casting of Inconel alloy 738 LC is affected by many aspects. One of them is the choice of method and time of cooling wax model for precision investment casting. The main objective was to study the initial deformation of the complex shape of the casting of the rotor blades. Various approaches have been tested for cooling wax pattern. When wax models are cooling on the air, without clamping in jig for cooling, deviations from the ideal shape of the casting are very noticeable (up to 8 mm) and most are in extreme positions of the model. When blade is cooled in fixing jig in water environment, the resulting deviations compared with cooling in air are significantly larger, sometimes up to 10 mm. This itself does not mean that the final shape of the casting is dimensionally more accurate with usage of wax models, which have deviations from the ideal position smaller. Another deformation occurs when shell mould is produced around wax pattern and furthermore deformations emerge while casting of blade is cooling. This paper demonstrates first steps in describing complex process of deformations of Inconel alloy blades produced with investment casting technology by comparing results from thermal imagery, simulations in foundry simulation software ProCAST 2010 and measurements from CNC scanning system Carl Zeiss MC 850. Conclusions are so far not groundbreaking, but it seems deformations of wax pattern and deformations of castings do in some cases cancel each other by having opposite directions. Describing entirely whole process of deformations will help increase precision of blade castings so that models at the beginning and blades in the end are the same.
Źródło:: Archives of Foundry Engineering; 2012, 12, 1; 37-42
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: New Use of Instruments for More Accurate Wax Pattern Blade Segment Production
Autorzy:: Herman, A.
Kubelková, I.
Vrátný, O.
Powiązania:: https://bibliotekanauki.pl/articles/381106.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: foundry industry
application of information technology
innovative foundry technologies
innovative materials
Investment casting
gas turbines
infrared thermography
simulation
przemysł odlewniczy
zastosowanie technologii informatycznej
innowacyjne technologie odlewnicze
innowacyjne materiały
turbiny gazowe
symulacja
Opis:: Precision casting is currently motivated by high demand especially for castings for the aerospace, automotive and gas turbine industries. High demands on precision of this parts pressure foundries to search for the new tools which can help them to improve the production. One of these tools is the numerical simulation of injection process, whereas such software especially for investment casting wax injection, process does not exist yet and for this case must be the existing software, for alloys or plastic, modified. This paper focuses on the use of numerical simulations to predict the behavior of injected models of gas turbine blades segments. The properties of wax mixtures, which were imported into the Cadmould simulation software as a material model, were found. The results of the simulations were verified using the results of 3D scanning measurements of wax models. As a supporting technology for verifying the results was used the Infrared Thermography.
Źródło:: Archives of Foundry Engineering; 2019, 2; 101-106
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Enhancement of Heat Transfer in PCM by Cellular Zn-Al Structure
Autorzy:: Naplocha, K.
Koniuszewska, A.
Lichota, J.
Kaczmar, J. W.
Powiązania:: https://bibliotekanauki.pl/articles/382339.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technology
innovative foundry material
metal cellular foam
porous Zn-Al structure
investment casting
heat transfer
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
pianka metalowa
struktura porowata Zn-Al
odlewanie precyzyjne
wymiana ciepła
Opis:: Development of open cellular metal foam technology based on investment casting applying the polyurethane pattern is discussed. Technological process comprises preparing of the ceramic mold applying PUR foam as the pattern, firing of the mold, pouring of the liquid Zn-Al alloy into the mold and washing out of the ceramic material from cellular casting. Critical parameters such as the temperature of mold and poured metal, design of gating system affected by metalostatic pressure allowed to produce castings with cellular structure characterized by the open porosity. Metal cellular foams with the open porosity embedded in phase change material (PCM) enhance heat transfer and reduce time operations in energy storage systems. Charging and discharging were performed at the laboratory accumulator by heating and cooling with flowing water characterized by the temperatures of 97-100ºC. Temperature measurements were collected from 7 different thermocouples located in the accumulator. In relation to the tests with pure paraffin, embedding of the metal Zn-Al cellular foam in paraffin significantly decreases temperature gradients and melting time of paraffin applied as PCM characterized by the low thermal conductivity. Similarly, reduction of discharging time by this method improves the efficiency of thermal energy storage system applied in solar power plants or for the systems of energy efficient buildings.
Źródło:: Archives of Foundry Engineering; 2016, 16, 4; 91-94
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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