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Wyświetlanie 1-15 z 43
Tytuł:
The researchers of influence of thermal treatment to structure and properties of core of rolls with layer of high alloyed cast iron
Issledovanie vlijanija termicheskojj obrabotki na strukturu i svojjstva serdceviny valkov v rabochim cloem iz vysokolegirovannogo chuguna
Autorzy:
Zhizhkina, N.
Powiązania:
https://bibliotekanauki.pl/articles/792340.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
thermal treatment
structure
property
core
stress level
roll core
cast iron
iron alloy
Opis:
The paper is dedicated to researches of influence of thermal treatment to quality of rolls’ core. It has been established that high temperature of heating promote to changes in metal base of such material. It has been showed that such structural changes do not reduce properties’ level of core of rolls.
Статья посвящена исследованиям влияния термической обработки на качество сердцевины валков. Установлено, что высокая температура нагрева способствует изменениям в металлической основе такого материала. Показано, что такие структурные изменения не снижают уровень свойств.
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The silumin coat structure on alloy ductile iron
Autorzy:
Szymczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/383363.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innowacyjne technologie odlewnicze
żeliwo sferoidalne
silumin
innovative casting technologies
dip coats
alloy ductile iron
Opis:
The work presents the research results of the silumin coat structure applied on the carbidic alloy ductile iron with the metal matrix: pearlitic, bainitic and martensitic. The coats were made in the AlSi5 silumin bath at the temperature tk = 750±5ºC. The holding time of cast iron element in the bath was \tau = 180s. Irrespective of the kind of tested ductile iron the obtained coat consisted of three layers with a different phase composition. The first layer from the cast iron ground “g1” is built from Fe4CSi carbide which contains selected alloy additives of the cast iron. On it the second layer “g1” crystallizes. It consists of the AlFeSi inter-metallic phase which can appear in its pure form or contain a small quantity of the alloy additives of the cast iron. The last external part of the layer “g2” mainly consists of the hypo-eutectic phases of silumin. The AlFeSi inter-metallic phases in the form of free precipitations with a lamellar or faceted morphology can also appear there. These phases also can contain a small quantity of the alloy additives of the cast iron. More than that, in all the layers of the coat there are graphite precipitations. The phenomenon of graphite movement to the coat is caused by intensive dissolving of the cast iron element surface by the aluminum of the silumin bath.
Źródło:
Archives of Foundry Engineering; 2013, 13, 1; 119-124
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of Effects of Precipitation Hardening of Low-Alloy Copper-Nickel Spheroidal Cast Iron
Autorzy:
Szykowny, T.
Giętka, T.
Romanowski, Ł.
Trepczyńska-Łent, M.
Powiązania:
https://bibliotekanauki.pl/articles/382582.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat treatment
spheroidal cast iron
low-alloy cast iron
hardening
obróbka cieplna
żeliwo sferoidalne
żeliwo niskostopowe
hartowanie
Opis:
One type of spheroidal cast iron, with additions of 0.51% Cu and 0.72% Ni, was subjected to precipitation hardening. Assuming that the greatest increase in hardness after the shortest time of ageing is facilitated by chemical homogenisation and fragmentation of cast iron grain matrix, precipitation hardening after pre-normalisation was executed. Hardness (HB), microhardness (HV), qualitative and quantitative metalographic (LM, SEM) and X-ray structural (XRD) tests were performed. The acquired result of 13.2% increase in hardness after ca. 5-hour ageing of pre-normalised cast iron confirmed the assumption.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3; 87-92
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manufacturing Methods of Alloy Layers on Casting Surfaces
Autorzy:
Szajnar, J.
Wróbel, T.
Dulska, A.
Powiązania:
https://bibliotekanauki.pl/articles/107005.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
cast steel
cast iron
monolithic and granular inserts
alloy layer
stainless steel
Opis:
In this paper, we presented the technology of layered castings based on the founding method of layer coating directly in the cast process known as the method of mold cavity preparation by monolithic or granular material of insert. Prepared castings consist of two fundamental parts: the base part and working part (layer). The base part of a layered casting is usually typical foundry material (i.e., pearlitic grey cast iron with flake graphite or ferritic-pearlitic carbon cast steel), whereas the dependence of an insert type (i.e., monolithic or granular) working part (layer) is suitably plated with ferrit‑ ic and austenitic alloy steels or a layer from a Cr-base alloy. The ratio of thickness between the base and working part is between 8:1 and 10:1. The quality of the layered castings was evaluated on the basis of ultrasonic non-destructive test‑ ing, structure, and selected usable property research. According to work out technology, the prepared layered castings can work in conditions that require high heat resistance and/or corrosion resistance from the working surface layer of an element in a medium of industrial water, for example. Moreover, in the case of applying an insert based on Cr-base alloy powder on the working surface layer, it is possible to obtain high hardness and abrasive wear resistance.
Źródło:
Journal of Casting & Materials Engineering; 2017, 1, 1; 2-6
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural analysis of iron based intermetallic phases in secondary AlSi6Cu4 cast alloy
Autorzy:
Svecova, I.
Tillova, E.
Kucharikova, L.
Powiązania:
https://bibliotekanauki.pl/articles/112033.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
iron based intermetallic phase
vanadium
aluminium alloy
faza międzymetaliczna
wanad
stop aluminium
Opis:
The use of secondary aluminum alloys is increasing because it contributes to the decrease of production costs. However, these alloys contain bigger amount of iron. Iron has a negative effect and therefore its elimination is necessary in order to add some elements, which are also called correctors of iron. The most frequently used corrector is manganese. Another quite often used correctors are chromium, potassium, magnesium, vanadium. In the following work, vanadium is used as a corrector of iron phases. The application of vanadium in aluminum alloys has a positive impact on their mechanical properties, increases the tensile strength, ductility and hardness. As experimental material AlSi6Cu4 alloy was used. It was alloyed by master alloy AlFe10. After adding to the master alloy the iron content, the critical value in the alloy exceeded. Vanadium was added to AlSi6Cu4 alloy in different quantities. The image analysis (software NIS-Elements) was used for quantifying the amount of iron based intermetallic phases and determination of average values.
Źródło:
Production Engineering Archives; 2017, 15; 3-6
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparing the Effectiveness of Cast Iron Spheroidization by the Traditional Method and Using a Reaction Chamber (Reactor) Placed in Foundry Mould
Autorzy:
Stefański, Z.
Kamińska, J.
Pamuła, E.
Angrecki, M.
Palma, A.
Powiązania:
https://bibliotekanauki.pl/articles/382171.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ductile iron
spheroidization methods
magnesium alloy
evaluation of effectiveness
żeliwo sferoidalne
metody sferoidyzacji
stop magnezu
skuteczność sferoidyzacji
ocena skuteczności
Opis:
The effectiveness of cast iron spheroidization with FeSiMg master alloy by the traditional method and using a reaction chamber placed in the cavity of foundry mould was compared. The method of cast iron treatment in mould cavity using a reaction chamber is an innovative technology developed by the Foundry Research Institute in Krakow. The effectiveness of the spheroidization process carried out by both methods was checked on a series of test castings. The article also presents the results of metallographic examinations and mechanical testing, including the discussion of magnesium yield and its assimilation rate.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 191-195
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical Properties of Silicon Cast Iron
Autorzy:
Stawarz, M.
Kajzer, W.
Kajzer, A.
Dojka, M.
Powiązania:
https://bibliotekanauki.pl/articles/381384.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pitting corrosion
alloy cast iron
SiMo
silicon cast iron
obróbka cieplna
korozja wżerowa
żeliwo stopowe
żeliwo silikonowe
Zaproponuj zmianę
Opis:
The article presents results of pitting corrosion studies of selected silicon cast irons. The range of studies included low, medium and high silicon cast iron. The amount of alloying addition (Si) in examined cast irons was between 5 to 25 %. Experimental melts of silicon cast irons [1-3] were conducted in Department of Foundry of Silesian University of Technology in Gliwice and pitting corrosion resistance tests were performed in Faculty of Biomedical Engineering in Department of Biomaterials and Medical Devices Engineering of Silesian University of Technology in Zabrze. In tests of corrosion resistance the potentiostat VoltaLab PGP201 was used. Results obtained in those research complement the knowledge about the corrosion resistance of iron alloys with carbon containing Si alloying addition above 17 % [4-6]. Obtained results were supplemented with metallographic examinations using scanning electron microscopy. The analysis of chemical composition for cast irons using Leco spectrometer was done and the content of alloying element (silicon) was also determined using the gravimetric method in the laboratory of the Institute of Welding in Gliwice. The compounds of microstructure was identify by X-ray diffraction.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 101-106
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
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:
Materials used in the structure of rail vehicle wheels
Materiały stosowane w budowie kół pojazdów szynowych
Autorzy:
Słowiński, Marcin Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2233912.pdf
Data publikacji:
2021-10-10
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
wheel
rail vehicle
steel
cast steel
ADI cast iron
spoked wheel
aluminum alloy
koło
pojazd szynowy
stal
staliwo
żeliwo ADI
koło szprychowe
stop aluminium
Opis:
The subject of this text is the description of structural materials used in the structure of railway vehicle wheels. The characteristic of this structural element as well as its functional and material requirements are presented. The description of commonly used carbon steels and alternative construction materials, such as cast steel, ADI cast iron or aluminum alloys, are presented in the further part, which are supposed to limit the wear of the wheel-rail friction pair and reduce the level of noise.
Przedmiotem niniejszego tekstu jest opis materiałów konstrukcyjnych stosowanych w budowie kół pojazdów szynowych. Przedstawiono charakterystykę tego elementu konstrukcyjnego, a także jego wymagania funkcjonalne oraz materiałowe. W dalszej części zaprezentowano opis powszechnie używanych stali węglowych oraz alternatywnych materiałów konstrukcyjnych, takich jak staliwa, żeliwa ADI czy stopy aluminium, które w założeniu miałyby ograniczać zużywanie pary ciernej koło-szyna oraz zmniejszać poziom emitowanego hałasu.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2021, 4; 14-24
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przykład obróbki cieplnej odlewów z żeliwa wysokochromowego
Example of Heat Treatment of High Chromium Cast Iron
Autorzy:
Siekaniec, D.
Szczęsny, A.
Kopyciński, D.
Powiązania:
https://bibliotekanauki.pl/articles/380144.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
obróbka cieplna
żeliwo wysokochromowe
mikrostruktura odlewu
twardość odlewu
heat treatment
high chromium cast iron
alloy microstructure
alloy hardness
Opis:
Żeliwo wysokochromowe jest powszechnie stosowanym materiałem w przemyśle górniczym i mineralnym, gdzie wymagana jest duża odporność na zużycie ścierne. Swoje dobre właściwości zawdzięcza obecności w mikrostrukturze twardych węglików. Żeliwo chromowe poddawane hartowaniu ma w praktyce osnowę austenityczną, austenityczno-perlityczną lub perlityczną. Istotnym procesem w czasie obróbki cieplnej jest tzw. destabilizacja austenitu, jest on ważny ponieważ dopiero po jego zajściu może nastąpić przemiana martenzytyczna. W zależności od szybkości chłodzenia, które następuje po procesie destabilizacji austenitu, może powstać perlit, bainit i martenzyt. Przeprowadzone badania dotyczyły określenia wpływu szybkości chłodzenia odlewów z żeliwa wysokochromowego po obróbce cieplnej, na mikrostrukturę i twardość. Badaniu zostało poddane żeliwo wysokochromowe o zawartości 27%Cr i 2,7%C. Przeprowadzono zabieg hartowania z temperatury 950 °C w czasie 4h, następnie odlewy poddano trzem wariantom chłodzenia – w wodzie, w kąpieli solnej i na powietrzu. Zbadano i porównano mikrostrukturę oraz twardość odlewów dla różnych wariantów chłodzenia.
High Chromium Cast Iron (HCCI) is widely use in mining and mineral industry, where abrasive resistance is a principal requirement. Its good properties thanks to the hard eutectic carbides occurring in the microstructure. The effect of heat treatment on HCCI was a subject of many research. High Chromium Cast Iron have an austenitic, austenitic-pearlitic or pearlitic matrix. An important process during the heat treatment is austenite destabilization, thus until after it conduct the martensitic transformation can occur. Depending on the cooling rate that follows the process of destabilization of austenite, perlite, bainite and martensite may form. The present work, aimed at studying the influence of cooling rate after heat treatment, on the microstructure and hardness. The study were carry out on samples of High Chromium Cast Iron containing 27%Cr i 2,7%C. Samples were subjected to the tempering treatment at the temperature of 950°C for 4 hours and three variants of cooling – in water, in a salt bath and on air. Examined and compared the microstructure and hardness of castings for different variants of cooling.
Źródło:
Archives of Foundry Engineering; 2015, 15, 4 spec.; 109-112
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Nickel Addition on Properties of Secondary AlSi7Mg0.3 Alloy
Autorzy:
Richtárech, L.
Bolibruchová, D.
Brůna, M.
Caiss, J.
Powiązania:
https://bibliotekanauki.pl/articles/379900.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
secondary AlSi7Mg0.3 alloy
iron phases
thermal analysis
iron correctors
stop AlSi7Mg0,3
faza żelazowa
analiza termiczna
usuwanie żelaza
Opis:
This paper deals with influence on segregation of iron based phases on the secondary alloy AlSi7Mg0.3 microstructure by nickel. Iron is the most common and harmful impurity in aluminum casting alloys and has long been associated with an increase of casting defects. In generally, iron is associated with the formation of Fe-rich intermetallic phases. It is impossible to remove iron from melt by standard operations. Some elements eliminates iron by changing iron intermetallic phase morphology, decreasing its extent and by improving alloy properties. Realization of experiments and results of analysis show new view on solubility of iron based phases during melt preparation with higher iron content and influence of nickel as iron corrector of iron based phases.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2; 95-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metallurgical Processing of Al-Si Alloys with Increased Iron Content Using Sodium, Strontium, and Tellurium
Autorzy:
Pokusová, M.
Berta, I.
Murgašová, M.
Powiązania:
https://bibliotekanauki.pl/articles/106931.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Al-Si alloy
iron
metallurgical processing
sodium
tellurium
strontium
Opis:
This paper presents the results of research focused on the processing of the hypoeutectic Al-Si alloy with an increased iron content of 1.75 wt.%. The physical-metallurgical method was used to eliminate the undesirable effect of the iron rich b-phase on the mechanical properties of the casting material using liquid metal modification by strontium, sodium, and tellurium. The chemical composition of an experimental material didn’t contain any elements for the solid-solution strengthening of a matrix; therefore, the presented results can document the capabilities of modifying the b-phase under a minimum influence on the properties of the basic Al-Si system.
Źródło:
Journal of Casting & Materials Engineering; 2018, 2, 1; 9-13
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reducing the Negative of the Iron in the Alloy Based on Al-Si-Mg by Manganese
Autorzy:
Podprocka, R.
Bolibruchova, D.
Chalupova, M.
Powiązania:
https://bibliotekanauki.pl/articles/381839.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alloy Al-Si-Mg
manganese
intermetallic phases
reducing of iron
stop Al-Si-Mg
mangan
fazy międzymetaliczne
redukcja żelaza
Opis:
In Al-Si alloy the iron is the most common impurity and with presence of other elements in alloy creates the intermetallic compounds, which decreases mechanical properties and increases of porosity. The cause of the negative effect of intermetallic particles on the mechanical properties is that it is more easily break off the tension load as the aluminium matrix or small particles of silicon. By adding suitable alloying elements, also known as iron correctors, is possible to reduce this harmful effect. In the article is evaluated influence of manganese on microstructure with performed EDX analysis selected intermetallic phases and tensile test and measurement of length of Al5FeSi phase. For realization experiments was used AlSi7Mg0.3 alloy with increased iron content. Manganese was added in the amount 0.3 wt. %, 0.6 wt. %, 0.8 wt.% and 1,2 wt. %. From performed measurements it has been concluded, that increased amount of manganese, i.e. Mn/Fe ratio, does not have significant influence on mechanical properties AlSi7Mg0.3 alloy in the melted state.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 212-216
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cast agricultural tools for operation in soil
Odlewane narzedzia rolnicze pracujace w glebie
Autorzy:
Pirowski, Z.
Kranc, M.
Olszynski, J.
Gwizdz, A.
Goscianski, M.
Powiązania:
https://bibliotekanauki.pl/articles/793045.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
iron alloy
ductile iron
agricultural tool
plough
single-sided plough
performance test
operating condition
cultivator duckfoot
tribological wear
subsoiler coulter
computer simulation
casting technology
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 2
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing the erosive wear resistance of selected iron alloys by mechanical strain hardening of structure
Zwiekszenie odpornosci wybranych stopow zelaza na zuzycie erozyjne poprzez mechaniczne odksztalcenia struktury
Autorzy:
Pirowski, Z.
Olszynski, J.
Gwizdz, A.
Powiązania:
https://bibliotekanauki.pl/articles/793493.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
iron alloy
mechanical strain hardening
plastic deformation
deformation resistance
erosive wear resistance
internal stress
tensile stress
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 43

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