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    Wyświetlanie 1-15 z 15
    Tytuł:
    The Influence of Lamellar Graphite Cast Iron Annealing on Hardness and Structure
    Autorzy:
    Roučka, J.
    Prochazka, J.
    Kana, V.
    Krutis, V.
    Nedelova, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/380964.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cast iron
    welding
    annealing
    cast iron hardness
    structure stability
    żeliwo
    spawanie
    wyżarzanie
    twardość żeliwa
    struktura
    stabilność
    Opis:
    An analysis has been carried out of the influence of annealing time at the preheating temperature of 650 °C on the change in hardness and alloy structure of lamellar graphite cast iron in the working as well as in the laboratory conditions. This preheat temperature is common during reclaiming welding of castings with complex shapes. The changes in unalloyed cast iron EN-GJL 200 to EN-GJL 300 according to ISO 1690 standard and cast iron with low amount of elements such as Sn, Cu, Cr, and Mo and their combinations were assessed. It was found that the cast iron of higher strength grades has better hardness and structural stability. Cast iron alloyed with chromium or its combinations has the highest stability. In unalloyed cast iron, a partial degradation of pearlite occurs; in alloyed cast iron the structural changes are not conclusive.
    Źródło:
    Archives of Foundry Engineering; 2019, 4; 105-112
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Molding Materials on the Self-Hardening of X46Cr13 Steel / Grey Cast Iron Bimetallic Castings
    Autorzy:
    Przyszlak, N.
    Wróbel, T.
    Dulska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049571.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bimetallic casting
    grey cast iron
    tool steel
    hardness
    microstructure
    Opis:
    The paper presents the problem which concerning the technology of bimetallic castings in materials configuration: high-chromium steel as the working layer and grey cast iron as the base part. The aim of the studies was integrate the process of manufacturing of bimetallic casting with the heat treatment of hardening type of X46Cr13 steel insert by applying the mould with sandmix on a matrix of chromite sand. Range of studies included the chemical composition analysis, non-destructive ultrasonic tests to examine the quality of the permanent bond between the working layer (steel insert) and the base part (grey cast iron) of the bimetallic castings, hardness measurements as well as metallographic examinations performed on the optical and scanning electron microscopes. On the basis of obtained results was concluded that the self-hardening process occurred in the X46Cr13 steel working layer and in result of this the hardness on its surface equalled approx. 45HRC in case of the bimetallic castings with full permanent bond between both parts.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 1; 43-50
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Impact Strength and Microstructure as Quality Criteria for Selected Materials
    Autorzy:
    Maj, M.
    Pietrzak, K.
    Lasota, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/379533.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel
    cast iron
    hardness
    microstructure
    impact strength
    stal
    żeliwo
    twardość
    mikrostruktura
    wytrzymałość
    Opis:
    The article presents the results of analysis of the chemical composition, hardness, microstructure and toughness of selected structural materials. The focus is on the results of impact tests carried out on the 40H steel quenched and tempered at three different temperatures, on grey cast iron used in industrial practice (cast material for brake drums) and on ADI, all of them being considered representatives of the group of materials commonly used in the production of structural elements and finished products, including items for use in the automotive industry. The impact tests were performed at a reduced temperature (-20°C), at room temperature (20°C) and at elevated temperature (150°C), comparing the results obtained with the microstructure of materials tested. It has been shown that in the case of steel, the smallest changes in microstructure cause changes in toughness, while the effect of tempering temperature is in this case of secondary importance. It was also proved that under the conditions of ambient temperature and reduced temperature, better results were obtained for ADI. At elevated temperature, better results were obtained for grey iron castings.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 199-204
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Techniki spawalnicze w odlewnictwie. Napawanie
    Welding Technology in Foundry
    Autorzy:
    Wojciechowski, W.
    Kowalski, J. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/383086.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    naprawa odlewu
    technika spawalnicza
    wada odlewu
    pomiar twardości
    mikrostruktura powierzchni
    cast repair
    welding technique
    cast defect
    hardness test
    surface microstructure
    Opis:
    W artykule omówiono problemy związane z naprawami wad odlewniczych. Przeanalizowano możliwości naprawy odlewów metodami spawalniczymi. Opisano technologię naprawy przez napawanie wlewnic wykonanych z żeliwa szarego. Napawanie prowadzono ręcznie elektrodami otulonymi oraz w osłonie gazów metodą MAG. Oceniono mikrostrukturę stref napawanych naprawianych odlewów oraz wyniki pomiarów twardości i rozkład mikrotwardości.
    In this paper discusses issues related to the repair of large castings. Analyzed the possibility repair of castings of welding methods. Describes the technology of repair by welding of cast iron ingot molds. Welding with coated electrodes was carried out manually and gas shielded MAG. Rated zones padded structure and performance measurement and distribution of microhardness.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 1 spec.; 87-90
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Microstructure and Tribological Properties of GX120Mn13 and GX120MnCr18-2 Cast Steels
    Autorzy:
    Kalandyk, B.
    Zapała, R.
    Kasińska, J.
    Madej, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079812.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high manganese cast steel
    microstructure
    hardness
    wear resistance
    staliwo wysokomanganowe
    mikrostruktura
    twardość
    odporność na zużycie
    Opis:
    The results of microstructure examinations and hardness measurements carried out on two selected grades of high-manganese cast steel with an austenitic matrix, i.e. GX120Mn13 and GX120MnCr18-2, are presented. The examinations of the cast steel microstructure have revealed that the matrix of the GX120MnCr18-2 cast steel contains the precipitates of complex carbides enriched in Cr and Mn with two different morphologies. The presence of these precipitates leads to an increase in hardness by approx. 30 HB compared to the GX120Mn13 cast steel. Samples cut out from the tested materials were loaded (10 strokes) with an energy of 53 J, and then a ball-on-disc tribological test was performed. The test was carried out in reciprocating motion under technically dry friction conditions. While analyzing the obtained results of the microstructure, hardness, and abrasion tests, it was found that the presence of the hard carbide precipitates in the plastic matrix of the tested GX120MnCr18-2 cast steel promoted an increase in hardness, but also led to chipping of these particles from the alloy matrix, thus contributing to micro-cutting during friction.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 4; 67-76
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Process of As-Cast Ferritic Gray Cast Iron Production
    Autorzy:
    Hossain, Md Sojib
    Powiązania:
    https://bibliotekanauki.pl/articles/1840818.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gray cast iron
    magnetic properties
    metallography
    hardness
    ferritic matrix
    żeliwo szare
    właściwości magnetyczne
    metalografia
    twardość
    Opis:
    Though normal air cooling and green sand mold-casted gray iron convey an essentially pearlitic matrix, ferritic gray iron is used in some electro-mechanical applications to have better magnetic properties, ductility, and low hardness. Conventionally, to produce ferritic gray iron, foundryman initially produces pearlitic gray iron, then it is carried through a long annealing cycle process for ferritic transformation. This experiment is conducted to eliminate the long annealing cycle from the conventional process. A process is developed to produce as-cast ferritic gray cast iron by air cooling in the green sand mold. In this experiment, Si content is kept high, but Mn content is kept low based on sulfur content; a unique thermodynamic process is established for decreasing the Mn content from the melt. After a successful preconditioning and optimum foundry return charging, the melt is specially inoculated, and metal is poured into the green sand mold. An extra feeder is added for slowing down the cooling rate where casting thickness is around 15mm. Finally, hardness and metallographic images are observed for final confirmation of the ferritic matrix.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 3; 5-10
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Addition of Titanium on The Structure and Properties of High Chromium Cast Iron
    Autorzy:
    Kopyciński, D.
    Guzik, E.
    Siekaniec, D.
    Szczęsny, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/383123.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high chromium cast iron
    titanium
    bending strength
    hardness
    microstructure
    żeliwo wysokochromowe
    tytan
    wytrzymałość materiałów
    twardość
    mikrostruktura
    Opis:
    The paper presents results of Ti-addition to High Chromium Cast Iron (HCCI) on the structure and selected mechanical properties. For this study casted two sets of cylinders with dimensions ø20 mm, ø15 mm x 250 mm, for the High Chromium Cast Iron (HCCI) and with the 4% by mass Ti-addition. Melts were performed in the induction furnace crucible capacity of 15 kg. During the heats the cup with installed S type thermocouple was poured to record the cooling curves. The cylinders were subjected to the static bending strength test. Samples for the test microstructure and Rockwell hardness were cut from the cylinders. The study shows that the addition of titanium had an impact on the structure and thus the properties of High Chromium Cast Iron (HCCI). In subsequent studies, through an appropriate choice of chemical composition and proper process control, it is planned to obtain in the structure the titanium carbides TiC and chromium carbides with type (Cr, Fe)7C3.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 3; 35-38
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cast iron component failure: A metallurgical investigation
    Autorzy:
    Sudhakar, K. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/382757.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cast iron
    hardness test
    optical microscopy
    scanning electron microscopy
    fractography
    żeliwo
    testy twardości
    mikroskopia optyczna
    mikroskop skaningowy
    Opis:
    A fractured nutcracker was examined for determining the root cause/s for premature fracture/failure. This is one of the common tools used typically for cracking hard nuts. In this study, metallurgical failure analysis techniques namely, visual inspection, optical microscopy, SEM, and hardness tests were used in investigating the broken product. From the metallurgical analysis, it was determined that the combined effect of low carbon equivalent and presence of inclusions contributed to the sudden fracture of the nut cracking tool.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2s; 67-70
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-hardening of X46Cr13 Steel Integrated with Base from Grey Cast Iron in Bimetallic System
    Autorzy:
    Przyszlak, N.
    Wróbel, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/380104.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bimetallic casting
    stainless steel
    grey cast iron
    hardness
    microstructure
    odlew bimetaliczny
    stal nierdzewna
    żeliwo szare
    twardość
    mikrostruktura
    Opis:
    The paper presents the technology of manufacturing layered castings, consisting of grey cast iron (base part) and high-chromium stainless steel (working part/layer). The aim of researches was an attempt of integration of heat treatment of steel X46Cr13 grade with founding of grey cast iron in bimetallic system and determination of the influence of cooling rate of bimetallic system in classical sand mould with bentonite on microstructure and hardness of the working layer. The castings were manufactured using mould cavity preparation method, where steel plate was poured by grey cast iron using different pouring temperature and thickness of base part. Then, the quality of joint between cast iron and steel plate was estimated by using ultrasonic non-destructive testing. The efficiency of heat treatment process was analysed by measurement of hardness and in metallographic examination. Conducted studies showed, that self-hardening’s ability of steel X46Cr13 let obtain technologically usable layered casting characterized by hardness of working surface up to 35 HRC.
    Źródło:
    Archives of Foundry Engineering; 2019, 2; 29-34
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in Abrasive Wear Resistance During Miller Test of Cr-Ni Cast Steel with Ti Carbides Formed in the Alloy Matrix
    Autorzy:
    Tęcza, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2126908.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chromium-nickel cast steel
    microstructure
    titanium carbides
    hardness
    abrasion
    staliwo chromowo-niklowe
    mikrostruktura
    węgliki tytanu
    twardość
    ścieralność
    Opis:
    Austenitic chromium-nickel cast steel is used for the production of machine parts and components operating under corrosive conditions combined with abrasive wear. One of the most popular grades is the GX2CrNi18-9 grade, which is used in many industries, and mainly in the chemical, food and mining industries for tanks, feeders, screws and pumps. To improve the abrasion resistance of chromium-nickel cast steel, primary titanium carbides were produced in the metallurgical process by increasing the carbon content and adding titanium, which after alloy solidification yielded the test castings with the microstructure consisting of an austenitic matrix and primary carbides evenly distributed in this matrix. The measured hardness of the samples in both as-cast conditions and after solution heat treatment was from 300 to 330HV0.02 and was higher by about 40-70 units compared to the reference GX2CrNi18-9 cast steel, which had the hardness of 258HV0.02. The abrasive wear resistance of the tested chromium-nickel cast steel, measured in the Miller test, increased by at least 20% (with the content of 1.3 wt% Ti). Increasing the Ti content in the samples to 5.3 and 6.9 wt% reduced the wear 2.5 times compared to the common GX2CrNi18-9 cast steel.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 4; 110--115
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    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:
    Effect of Different Inoculants on Impact Toughness in High Chromium Cast Iron
    Autorzy:
    Siekaniec, D.
    Kopyciński, D.
    Guzik, E.
    Tyrała, E.
    Nowak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/383309.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mechanical properties
    high chromium cast iron
    inoculation
    impact toughness
    hardness
    właściwości mechaniczne
    żeliwo wysokochromowe
    modyfikacja
    odporność na uderzenia
    twardość
    Opis:
    The present work, presented the study of effect of different inoculants on impact toughness in High Chromium Cast Iron. The molds were pouring in industrial conditions and samples were tested in laboratory in Faculty of Foundry Engineering at AGH. Seven samples were tested - one reference sample, three with different addition of Fe-Ti, and three with different addition of Al. The samples were subjected to impact toughness on Charpy hammer and the hardness test. The presented investigations indicate that for the each inoculant there is an optimal addition at which the sample obtained the highest value of impact toughness. For the Fe-Ti it is 0.66% and for Al is 0.17%. Of all the examined inoculants best results were obtained at a dose of 0.66% Fe-Ti. Titanium is a well-known as a good modifier but very interesting results gives the aluminum. Comparing the results obtained for the Fe-Ti and Al can be seen that in the case of aluminum hardness is more stable. The hardness of all samples is around 40-45 HRC, which is not high for this type of cast iron. Therefore, in future studies it is planned to carry out the heat treatment procedure that may improves hardness.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 85-88
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Properties of 17Cr-0.8C Cast Steel
    Autorzy:
    Kalandyk, B.
    Zapała, R.
    Pałka, P.
    Wróbel, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/353847.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    martensitic cast steel
    M23C6
    Fe7C3
    Fe3C carbides
    heat treatment
    microstructure
    hardness
    Opis:
    The results of studies of the microstructure and properties of cast high alloy steels containing 17% Cr and 0.8% C subjected to different variants of heat treatment are presented. For phase identification, the light microscopy and scanning electron microscopy as well as the X-ray diffraction analysis were used. The conducted studies revealed the presence of carbides in the microstructure, mainly of the M23C6 carbide, detected after both quenching and tempering at 200 and 600°C. The use of low and high tempering significantly reduced the test alloy hardness from 657.3 HV30 to 403.7 HV30. At the same time, hardness was observed to have an impact on the values of abrasion in the conducted Miller slurry test. Higher material hardness leads to lower wear expressed by mass loss.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 113-117
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Si and Mn on Microstructure and Selected Properties of Cr-Ni Stainless Steels
    Autorzy:
    Kalandyk, B.
    Zapała, R.
    Starowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380853.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cast stainless
    alloy composition
    hardness
    electrochemical corrosion
    Miller test
    odlew ze stali nierdzewnej
    skład stopu
    twardość
    korozja elektrochemiczna
    test Millera
    Opis:
    Cast stainless steel of the Cr-Ni duplex type is used, among others, for the cast parts of pumps and valves handling various chemically aggressive media. Therefore, the main problem discussed in this article is the problem of abrasion wear resistance in a mixture of SiC and water and resistance to electrochemical corrosion in a 3% NaCl- H2O solution of selected cast steel grades, i.e. typical duplex cast steel, high silicon and manganese duplex cast steel, and Cr-Ni austenitic cast steel (type AISI 316L). The study shows that the best abrasion wear resistance comparable to Ni-Hart cast iron was obtained in the cast duplex steel, where Ni was partially replaced with Mn and N. This cast steel was also characterized by the highest hardness and matrix microhardness among all the tested cast steel grades. The best resistance to electrochemical corrosion in 3% NaCl- H2O solution showed the cast duplex steel with high content of Cr, Mo and N. The addition of Ni plays rather insignificant role in the improvement of corrosion resistance of the materials tested.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 1; 192-196
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Grey Cast Iron Locally Reinforced Using 3D Printing Scaffold Insert
    Autorzy:
    Przyszlak, N.
    Dulska, A.
    Wróbel, T.
    Szajnar, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/380636.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    grey cast iron
    3D printing insert
    Titanium
    hardness
    abrasive wear
    żeliwo szare
    wkład do druku 3D
    tytan
    twardość
    zużycie ścierne
    Opis:
    The paper presents an innovative method of creating the layered castings. The innovation relies on application the 3D printing insert obtaining in SLM (selective laser melting) method. This type of scaffold insert made from pure Ti powder, was placed into mould cavity directly before pouring by grey cast iron. In result of used method was obtained grey cast iron casting with surface layer reinforced by titanium carbides. In range of studies were carried out metallographic researches using light microscope and scanning electron microscope, microhardness measurements and abrasive wear resistance. On the basis of obtaining results was stated that there is a possibility of reinforcing surface layer of the grey cast iron casting by using 3D printing scaffold insert in the method of mould cavity preparation. Moreover there was a local increase in hardness and abrasive wear resistance in spite of the precipitation of titanium carbides in surface layer of grey cast iron. While the usable properties of composite surface layer obtained in result of use of the method presented in the paper, strongly depend of dimensions of scaffold insert, mainly parameters Re and Ri.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 99-102
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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