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Wyszukujesz frazę "aluminum casting" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
The Influence of Casting Velocity on Structure of Al Continuous Ingots
Autorzy:
Bartocha, D.
Wróbel, T.
Szajnar, J.
Adamczyk, W.
Jamrozik, W.
Dojka, M.
Powiązania:
https://bibliotekanauki.pl/articles/354184.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum
primary structure
ingot
continuous casting
simulation of solidification process
Opis:
The aim of paper was determination of influence of the casting velocity in horizontal continuous casting process on solidification phenomenon and next primary structure of aluminum ingots. In the range of studies was conducted the experiment concerning continuous casting of Al ingots with diameter 30 mm at velocity from 30 to 80 mm/min. Moreover was developed adequate to the real the virtual model of cooled water continuous casting mould, which was used in simulation of solidification process of Al continuous ingot, made in ANSYS Fluent software. In result was determined the influence of casting velocity and temperature of cooling water on position of crystallization front inside the continuous casting mould. While the shape and size of grains in primary structure of Al continuous ingots were determined on the basis of metallographic macroscopic studies. On the basis of the results analysis was affirmed that increase of casting velocity strongly influences on position of crystallization front and causes increase of temperature of ingot leaving the continuous casting mould. In result the increase of casting velocity supposedly leads to decrease of temperature gradient on crystallization front what creates coarse grains in primary structure of aluminum continuous ingots and caused low usable properties i.e. suitability to plastic deformation.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 3; 1609-1613
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Primary Structure and Mechanical Properties of AlSi2 Alloy Continuous Ingots
Autorzy:
Wróbel, T.
Szajnar, J.
Bartocha, D.
Stawarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/381796.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
continuous casting
aluminum
silicon
inoculation
electromagnetic stirring
odlewanie ciągłe
aluminium
krzem
wszczepianie
Opis:
The paper presents the research results of horizontal continuous casting of ingots of aluminium alloy containing 2% wt. silicon (AlSi2). Together with the casting velocity (velocity of ingot movement) we considered the influence of electromagnetic stirring in the area of the continuous casting mould on refinement of the ingot’s primary structure and their selected mechanical properties, i.e. tensile strength, yield strength, hardness and elongation. The effect of primary structure refinement and mechanical properties obtained by electromagnetic stirring was compared with refinement obtained by using traditional inoculation, which consists in introducing additives, i.e. Ti, B and Sr, to the metal bath. On the basis of the obtained results we confirmed that inoculation done by electromagnetic stirring in the range of the continuous casting mould guarantees improved mechanical properties and also decreases the negative influence of casting velocity, thus increasing the structure of AlSi2 continuous ingots.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 145-150
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The stand of horizontal continuous casting of Al and its alloys
Autorzy:
Wróbel, T.
Szajnar, J.
Bartocha, D.
Stawarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/381190.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
continuous casting
aluminum
silicon
inoculation
electromagnetic stirring
odlewanie ciągłe
aluminium
krzem
modyfikacja
mieszanie elektromagnetyczne
Opis:
In paper is presented idea of construction and influence of selected parts of stand of horizontal continuous casting on quality of pure Al and AlSi2 alloy ingots. The main parts of the made stand belong to induction furnace, which is also tundish, water cooled continuous casting mould, system of recooling, system of continuous ingot drawing and cutting. Mainly was considered influence of electromagnetic stirrer, which was placed in continuous casting mould on refinement of ingots structure. Effect of structure refinement obtained by influence of electromagnetic stirring was compared with refinement obtained by use of traditional inoculation, which consists in introducing of additives i.e. Ti and B to metal bath. The results of studies show possibility of effective refinement of Al and AlSi2 alloy primary structure, only with use of horizontal electromagnetic field and without necessity of application of inoculants. This method of inoculation is important, because inoculants decrease the degree of purity and electrical conductivity of pure aluminum and moreover are reason of point cracks formation during rolling of ingots.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 113-118
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modyfikacja stopów Al-Si przy użyciu metody mieszania elektromagnetycznego
Inoculation of Al-Si alloys using the electromagnetic stirring method
Autorzy:
Szajnar, J.
Wróbel, T.
Bartocha, D.
Stawarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/391440.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
Tematy:
aluminium
krzem
wlewek
odlewanie ciągłe
pole elektromagnetyczne
aluminum
silicon
ingot
continuous casting
electromagnetic field
Opis:
W pracy przedstawiono wyniki dotyczące modyfikacji metodą mieszania elektromagnetycznego wybranych podeutektycznych stopów aluminium z krzemem gatunku AlSi2 i AlSi7. Celem realizacji procesu modyfikacji zastosowano mieszadło zasilane prądem o podwyższonej częstotliwości, wytwarzające wirujące pole elektromagnetyczne. Skuteczność modyfikacji oceniono na podstawie wyników badań metalograficznych makro- i mikroskopowych. Ponadto przedstawiono możliwość aplikacji uzyskanych wyników badań w procesie poziomego odlewania ciągłego stopów Al-Si.
In this research paper results concerning the inoculation method based on electromagnetic stirring of hypoeutectic aluminum with silicon alloys AlSi2 and AlSi7 grade are presented. The inoculation process used a stirrer supplied by current with a high frequency, generating a rotating electromagnetic field. The efficiency of inoculation was estimated in the results of the metallographic macro- and microscopic research. Moreover, the possibility of using the obtained results in horizontal continuous casting process of Al-Si alloys was presented.
Źródło:
Prace Instytutu Odlewnictwa; 2016, 56, 2; 67-75
1899-2439
Pojawia się w:
Prace Instytutu Odlewnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and Usable Properties of Aluminum Continuous Ingots
Autorzy:
Wróbel, T.
Szajnar, J.
Bartocha, D.
Stawarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/381301.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
continuous casting
aluminum alloy
structure
inoculation
electromagnetic stirring
odlewanie ciągłe
stop aluminium
modyfikacja
mieszanie elektromagnetyczne
Opis:
In paper is presented results of studies concerning ingot of Al with a purity of 99.5% cast with use of stand of horizontal continuous casting. Mainly together with casting velocity was considered influence of electromagnetic stirrer, which was placed in continuous casting mould on refinement of ingots structure and theirs usability to plastic deformation. Effect of structure refinement and usability to plastic deformation obtained by influence of electromagnetic stirring was compared with refinement obtained by use of traditional inoculation, which consists in introducing of additives i.e. Ti and B to metal bath. On the basis of obtained results was affirmed that inoculation realized by electromagnetic stirring in range of continuous casting mould guarantees improvement in structure refinement and usability to rolling of pure Al continuous ingots.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3; 85-90
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Precipitation Hardening of Continuous Ingots of AlSi2Mn and AlCu4MgSi Alloys
Autorzy:
Wróbel, T.
Nuckowski, P. M.
Jurczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/382653.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum alloy
precipitation hardening
continuous casting
silicon
cooper
stop aluminium
utwardzanie wydzieleniowe
odlewanie ciągłe
silikon
miedź
Opis:
The paper presents the research results of the influence of the precipitation hardening on hardness and microstructure of selected Al-Si and Al-Cu alloys obtained as ϕ30 mm ingots in a horizontal continuous casting process. The ingots were heat treated in process of precipitation hardening i.e. supersaturation with subsequent accelerated or natural ageing. Moreover in the range of the study it has been carried out investigations of chemical constitution, microscopic metallographic with use of scanning electron microscope with EDS analysis system, and hardness measurements using the Brinell method. On basis of obtained results it has been concluded that the chemical constitution of the investigated alloys enables to classify them into Al alloys for the plastic deformation as EN AW-AlSi2Mn (alternatively cast alloy EN AC-AlSi2MgTi) and as EN AW-AlCu4MgSi (alternatively cast alloy EN AC-AlCu4MgTi) grades. Moreover in result of applied precipitation hardening has resulted in the precipitation from a supersaturated solid solution of dispersive particles of secondary phases rich in alloying element i.e. Si and Cu respectively. In consequence it has been obtained increase in hardness in case of AlSi2Mn alloy by approximately 30% and in case of AlCu4MgSi alloy by approximately 20% in comparison to the as-cast state of continuous ingots.
Źródło:
Archives of Foundry Engineering; 2018, 18, 2; 181-186
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on New Al-Ag-Mo Alloys Dedicated to Wire Applications in Overhead Power Lines
Autorzy:
Grzebinoga, Justyna
Mamala, Andrzej
Ściężor, Wojciech
Kowal, Radosław
Powiązania:
https://bibliotekanauki.pl/articles/2201984.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
aluminum
silver
molybdenum
continuous casting
drawing
wire
conductivity
thermal resistance
temperature coefficient of resistance
rheological properties
HTLS conductors
Opis:
The latest research work in the field of electric power systems focuses on the development of new wire materials which will allow the increase of the transmission capacity of power lines currently in use. The reason for this research was the often limited possibilities of continuous and failure-free transmission of electricity. In this paper, the authors present research on a new aluminium-based alloy dedicated for use as a conductive braid in the HTLS cable group. There are many technical solutions for this group of cables on the market, although they are solutions with a number of disadvantages, ranging from their high price, various operational shortcomings, complicated installation techniques, and ending with the risk of monopolistic practices, which is related to the inability to attract several competitive suppliers. The main aim of the research was to develop a new alloy based on aluminium with the addition of silver and molybdenum dedicated for use in special overhead power cables. Experimental research on new materials focused on obtaining the necessary knowledge to produce an overhead wire from these alloys with higher current carrying capacity in relation to the currently used conventional wire materials based on aluminium.
Źródło:
Journal of Casting & Materials Engineering; 2023, 7, 1; 9--14
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Variable Parameters of Horizontal Continuous Casting on the Structure of AlCu4MgSi Alloy Ingots
Autorzy:
Nuckowski, P. M.
Wróbel, T.
Powiązania:
https://bibliotekanauki.pl/articles/380484.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metallography
aluminum alloys
continuous casting
structure analysis
X-ray diffraction
phase analysis
metalografia
stopy aluminium
odlewanie ciągłe
analiza struktury
dyfrakcja rentgenowska
analiza fazy
Opis:
The article presents results of research on the influence of variable parameters of horizontal continuous casting on the structure of AlCu4MgSi (EN AW-2017A) alloy ingots. The special character of the process allows for a continuous change of some of its parameters, namely, of the casting speed and of the rate of the cooling fluid flow thorough the crystallizer. These parameters have a significant impact on the crystallization process of the liquid metal. Depending on the cooling rate, intensity of the convection inside the solidifying alloy, and its chemical composition, there may arise some differences in the structure of the cast. In this study, ingots obtained at different casting speeds have been analyzed. The research methodology, based on light microscopy and electron microscopy (SEM), as well as energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), allowed for a thorough examination of the structure of the studied materials. The results were shown that an increase in the ingot casting speed leads to an increase in the average grain surface area.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 196-202
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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