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Wyszukujesz frazę "copper casting" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Research on Technology of Alloyed Copper Casting
Autorzy:
Rzadkosz, S.
Kranc, M.
Garbacz-Klempka, A.
Piękoś, M.
Kozana, J.
Cieślak, W.
Powiązania:
https://bibliotekanauki.pl/articles/380832.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
casting technology
copper
alloyed copper
copper deoxidation
heat treatment
technologia odlewnicza
miedź
obróbka cieplna
Opis:
The work presents experiment results from the area of copper casting technology and chosen examples of alloyed copper. At present, copper casting technology is applied in many branches of industrial manufacturing, especially in the sector of construction, communications, arms and power engineering. Alloyed copper, containing slight additions of different elements and having special physio-chemical properties, is used in a special range of applications. Copper technology and alloyed copper analyses have been presented, these materials being used for cast manufacturing for power engineering. The quality of casts has been assessed, based on their microstructure analysis, chemical content and the cast properties. During the research, special deoxidizing and modifying agents were applied for copper and chosen examples of alloyed copper; also exemplary samples were tested with the help of metallographic analysis, electrical conductivity and gaseous impurities research.
Źródło:
Archives of Foundry Engineering; 2014, 14, 2; 79-84
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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 5th 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
Artykuł
Tytuł:
Artefacts from Krakow-Nowa Huta as an illustration of selected issues of research into prehistoric and mediaeval casting
Wybrane zagadnienia badań nad odlewnictwem prehistorycznym i średniowiecznym na przykładzie zabytków z Krakowa-Nowej Huty
Autorzy:
Garbacz-Klempka, A.
Rzadkosz, S.
Górski, J.
Powiązania:
https://bibliotekanauki.pl/articles/263771.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
archaeometallurgy
casting of non-ferrous metals
copper
bronze
brass
archaeometalurgia
odlewnictwo metali nieżelaznych
miedź
brąz
mosiądz
Opis:
An attempt to examine the earliest traces of non-ferrous metal metallurgy and casting in present-day Krakow has been made. The preparatory investigation has centred around a group of finds coming from a small section of the eastern part of the city, the area of Nowa Huta. The paper gives an overall view of objects ranging from the first copper artefacts from the territory of Poland in the 4th millennium BC through Lusatian bronzes and Celtic products to modern slag from Jan Thurzo’s copper smelter. The analysis, involving diverse copper or copper alloy artefacts, ornaments and tools – both imports and local products – has been aimed at preliminary identification of Krakow’s earliest metal artefacts in terms of their materials and methods of production, and at preparing the ground for further study. This multifaceted research is intended to result in a comparison of materials and techniques used in metallurgy and casting during the timespan of 5000 years.
Podjęto próbę zbadania najstarszych śladów metalurgii i odlewnictwa metali nieżelaznych na terenie dzisiejszego Krakowa. Do pierwszych badań wybrano znaleziska z niewielkiego obszaru we wschodniej części Krakowa, obejmującego rejon Nowej Huty. Przedstawiono pierwsze zabytki miedziane z ziem polskich z IV tysiąclecia p.n.e., brązy kultury łużyckiej, wyroby celtyckie, aż po nowożytny żużel z huty miedzi Jana Thurzo. Do analizy wybrano zabytki miedziane i wykonane ze stopów miedzi, ozdoby i narzędzia, będące zarówno importami, jak i przedmiotami wykonanymi na miejscu. Celem pracy była wstępna identyfikacja materiałów, z których wykonano najstarsze zabytki metalowe odnalezione na terenie Krakowa, ustalenie technik wytwórczych, dzięki którym powstały, a także przygotowanie dalszych badań w tym zakresie. Rezultatem wielopłaszczyznowych badań będzie porównanie stosowanych surowców i materiałów oraz technik metalurgicz nych i odlewniczych na przestrzeni pięciu tysięcy lat.
Źródło:
Metallurgy and Foundry Engineering; 2013, 39, 2; 23-28
1230-2325
2300-8377
Pojawia się w:
Metallurgy and Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical Properties of Copper Based MMC Strengthened with Alumina
Autorzy:
Kaczmar, J. W.
Granat, K.
Kurzawa, A.
Grodzka, E.
Powiązania:
https://bibliotekanauki.pl/articles/380691.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
copper
alumina particles
squeeze casting
thermal conductivity
electrical conductivity
kompozyt
miedź
przewodność cieplna
przewodność elektryczna
Opis:
The aim of this work is the development of Cu-Al2O3 composites of copper Cu-ETP matrix composite materials reinforced by 20 and 30 vol.% Al2O3 particles and study of some chosen physical properties. Squeeze casting technique of porous compacts with liquid copper was applied at the pressure of 110 MPa. Introduction of alumina particles into copper matrix affected on the significant increase of hardness and in the case of Cu-30 vol. % of alumina particles to 128 HBW. Electrical resistivity was strongly affected by the ceramic alumina particles and addition of 20 vol. % of particles caused diminishing of electrical conductivity to 20 S/m (34.5% IACS). Thermal conductivity tests were performed applying two methods and it was ascertained that this parameter strongly depends on the ceramic particles content, diminishing it to 100 Wm-1K-1 for the composite material containing 30 vol.% of ceramic particles comparing to 400 Wm-1K-1 for the unreinforced copper. Microstructural analysis was carried out using SEM microscopy and indicates that Al2O3 particles are homogeneously distributed in the copper matrix. EDS analysis shows remains of silicon on the surface of ceramic particles after binding agent used during preparation of ceramic preforms.
Źródło:
Archives of Foundry Engineering; 2014, 14, 2; 85-90
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bending strength and fracture investigations of Cu based composite materials strengthened with \delta-alumina fibres
Autorzy:
Kaczmar, J. W.
Granat, K.
Naplocha, K.
Kurzawa, A.
Grodzka, E.
Samociuk, B.
Powiązania:
https://bibliotekanauki.pl/articles/383012.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
copper
alumina fibre
squeeze casting
bending strength
kompozyt metalowy
miedź
włókno aluminiowe
prasowanie stopu
wytrzymałość na zginanie
Opis:
Bending strength, thermal and electric conductivity and microstructure examinations of Cu based composite materials reinforced with Saffil alumina fibres are presented. Materials were produced by squeeze casting method applying the designed device and specially elaborated production parameters. Applying infiltration pressure of 90MPa and suitable temperature parameters provided manufacturing of copper based composite materials strengthened with Saffil alumina fibres characterized by the low rest porosity and good fibre-matrix interface. Three point bending tests at temperatures of 25, 100 and 300ºC were performed on specimens reinforced with 10, 15 and 20% of Saffil fibres. Introduced reinforcement effected on the relatively high bending strengths at elevated temperatures. In relation to unreinforced Cu casting strength of composite material Cu – 15vol.% Saffil fibres increase by about 25%, whereas at the highest applied test temperature of 300ºC the improvement was almost 100%. Fibres by strengthening of the copper matrix and by transferring loads from the matrix reduce its plastic deformation and hinder the micro-crack developed during bending tests. Decreasing of thermal and electrical conductivity of Cu after incorporating fibres in the matrix are relatively small and these properties can be acceptable for electric and thermal applications.
Źródło:
Archives of Foundry Engineering; 2013, 13, 2; 59-63
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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