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Tytuł:
Development of a New ATD-P Tester for Hard Wear Resistant Materials
Autorzy:
Dojka, M.
Dojka, R.
Studnicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/380369.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
crystallization
TDA
ATD tester
wear resistant materials
krystalizacja
ATD
ścieranie
materiały odporne na ścieranie
Opis:
The aim of presented studies was to develop a new geometry of the overflow part of standard ATD–C tester for derivative thermal analysis in a way that it would allow to obtain samples for abrasion and mechanical properties tests in the same mould without the need of cutting them from a block of material. The pattern of new ATD–P tester has parts reflecting implemented samples. Computer simulations regarding initial verification of new tester were performed in NovaFlow software. Chromium cast iron melts were made for testing the sampler in real conditions and TDA analysis for casting material were conducted. The sandmix was prepared on silica sand matrix according to the ALPHASET technology. This new solution greatly simplifies the preparations of materials difficult to machine.
Źródło:
Archives of Foundry Engineering; 2017, 17, 1; 37-40
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Type of Welding Sequence During Hardfacing Chromium Cast Iron for Erosion Resistance
Autorzy:
Gucwa, M.
Bęczkowski, R.
Winczek, J.
Wyleciał, T.
Powiązania:
https://bibliotekanauki.pl/articles/382472.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloys
hardfacing
erosion
welding
hardness
stopy odporne na zużycie
napawanie
erozja
spawanie
twardość
Opis:
The paper presents the capabilities of welding techniques to creating properties of wear resistant high chromium cast iron alloy. The use of the right kind of welding sequence allows you to change the structure and properties of the obtained welds. Tests were conducted for one type of additive material in the form of self shielded core wire. In order to determine the effect of the type of welding sequence on the properties of welds performed welding using string bead and weave bead. The resulting weld was tested on hardness and research structure in an optical microscope. In the following studies have been made erosive tests wear of made hardfacing. String beads gave structure rich in carbides and harder about 270 HV of the weld with weave bead. Also, wear resistance was nearly twice as better for welds made with string beads. In the experiment a decisive role in the resistance to wear plays a high hardness of the deposit and the presence of carbides in its structure. Changes in the basic parameters of the deposition process allows for the formation of structure and properties of hardfacing welds in a wide range.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 51-54
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspekty wytwarzania żeliwa wysokokrzemowego w warunkach przemysłowych
Aspects of silicon cast iron production in industrial conditions
Autorzy:
Stawarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/382631.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
żeliwo wysokokrzemowe
materiał kwasoodporny
produkcja odlewu
high silicon cast iron
acid resistant material
casting production
Opis:
W artykule opisano prace związane z próbą wytworzenia odlewów z żeliwa wysokokrzemowego w warunkach przemysłowych. Zwrócono głównie uwagę na napotkane trudności w produkcji odlewów z tego materiału. Okazało się, że pomimo 100 letniej tradycji w produkcji odlewów z żeliwa wysokokrzemowego (pierwszy odlew wytworzony z tego materiału i zastosowany z powodzeniem w warunkach przemysłowych wykonano w 1907 roku p rzez francuza Jouve [1]), materiał ten nadal stwarza wiele trudności podczas procesu produkcyjnego. Należą do nich pękanie związane z wysoką kruchością lub tzw. efekt „rośnięcia” metalu związany z dużą zdolnością do absorpcji gazów przez kąpiel metalową podczas procesu metalurgicznego przygotowania stopu do odlewania [2].
The article describes the work associated with the attempt to manufacture silicon cast iron in industrial conditions. Most attention has been paid to the difficulties encountered in the production of castings from this material. It turned out that despite 100 years of tradition in the production of silicon cast iron (first castings produced from this material and used successfully in industrial conditions were made in 1907 by Frenchman Jouve [1]), this material still poses many difficulties during the manufacturing process such as: cracking associated with high fragility or so called "grow" effect of the metal associated with large capacity to absorb gases through the metal bath during the process of preparing an alloy for casting [2].
Źródło:
Archives of Foundry Engineering; 2011, 11, 3 spec.; 205-208
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Resistance of WE43 and ZRE1 Magnesium Alloys to Gas Corrosion
Autorzy:
Przeliorz, R.
Piątkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/379573.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloys
magnesium alloys
oxidation resistance
stopy odporne na zużycie
stopy magnezu
odporność na utlenianie
Opis:
In spite of the fact that in most applications, magnesium alloys are intended for operation in environments with room temperature, these alloys are subject to elevated temperature and oxidizing atmosphere in various stages of preparation (casting, welding, thermal treatment). At present, the studies focus on development of alloys with magnesium matrix, intended for plastic forming. The paper presents results of studies on oxidation rate of WE43 and ZRE1 magnesium foundry alloys in dry and humidified atmosphere of N2+1%O2. Measurements of the oxidation rate were carried out using a Setaram thermobalance in the temperature range of 350-480°C. Corrosion products were analyzed by SEM-SEI, BSE and EDS. It was found that the oxide layer on the WE43 alloy has a very good resistance to oxidation. The high protective properties of the layer should be attributed to the presence of yttrium in this alloy. On the other hand, a porous, two-layer scale with a low adhesion to the substrate forms on the ZRE1 alloy. The increase in the sample mass in dry gas is lower than that in humidified gas.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 217-221
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ symulowanych wodnych środowisk fizjologicznych na odporność korozyjną stopów Ti6Al4V i Ti10Mo4Zr oraz ich składników stopowych
Influence of Simulated Physiological Solution to Corrosion Resistance of Ti6Al4V and Ti10Mo4Zr Alloys and Alloying Elements
Autorzy:
Loch, J
Krawiec, H.
Łukaszczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/382736.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stopy odporne na zużycie
stopy tytanu
korozja
roztwory fizjologiczne
wear resistant alloys
titanium alloys
corrosion
physiological solutions
Opis:
Celem pracy było porównanie korozyjnego zachowania się najbardziej popularnego stopu tytanu Ti-6Al-4V, stosowanego na implanty biomedyczne, ze stopem Ti-10Mo-4Zr. Badania odporności korozyjnej zostały przeprowadzone w fizjologicznym roztworze Hank’a. Odporność korozyjną obu stopów porównano na podstawie badań potencjału korozyjnego i potencjo dynamicznych krzywych polaryzacyjnych wykonanych techniką liniowej woltamperometrii (LSV). Stop tytanu Ti-10Mo-4Zr posiada niższy moduł Younga wynoszący 74 ÷ 86 GPa niż stop Ti-6Al-4V (110 GPa). Jest wskazane, aby materiały metaliczne stosowane w implantologii wykazywały moduły Younga raczej niższe, to znaczy zbliżone do modułu Younga kości około 30 GPa. W związku z tym, biorąc pod uwagę właściwości mechaniczne, stop Ti-10Mo-4Zr jest bardziej atrakcyjnym materiałem przeznaczonym na implanty. Badania odporności korozyjnej w fizjologicznym roztworze Hank’a wykazały jednoznacznie, że stop Ti-10Mo-4Zr, podobnie jak stop Ti-6Al-4V, wykazuje bardzo dobra odporność na korozję. Wysoka odporność obu stopów tytanu jest związana z tworzeniem się termodynamicznie stabilnej i trwałej warstwy tlenkowej zawierającej głównie tlenek tytanu TiO2. Bardzo dobra odporność na korozję i korzystniejsze właściwości mechaniczne wskazują, że jednofazowy stop Ti-10Mo-4Zr jest bardzo atrakcyjnym materiałem przeznaczonym na implanty biomedyczne.
The aim of this paper was the comparison of the corrosion behavior two titanium alloy Ti-6Al-4V and Ti-10Mo-4Zr. Up to now Ti-6Al-4V alloy is common used as a bioimplants. Corrosion resistance tests for both Ti alloys have been performed in Hank's physiological solution. Corrosion resistance of both alloys were compared on the basis of the corrosion potential measurements and polarization curves obtained by means of linear voltammetry technique (LSV). Titanium alloy Ti-10Mo-4Zr has a lower Young’s modulus of about 74 GPa compare to Ti-6Al-4V alloy (110 GPa). It is desirable that the metallic materials used for implants should have a rather low Young's modules that is similar to the Young's modulus of human bones (30 GPa). Therefore, considering the mechanical properties the Ti-10Mo-4Zr alloy is very attractive as a material for bioimplants. The study of corrosion resistance in Hank's physiological solution clearly showed that the Ti-10Mo-4Zr like Ti 6Al-4V-shows very good resistance to corrosion. High corrosion resistance of both titanium alloys is related to the formation of thermodynamically stable oxide layer consists mainly of titanium dioxide TiO2. Very good corrosion resistance and favorable mechanical properties indicate that the single-phase Ti-10Mo-4Zr alloy is a very attractive material for biomedical implants.
Źródło:
Archives of Foundry Engineering; 2014, 14, 4 spec.; 89-94
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Degradation of Creep Resistant Ni - alloy During Aging at Elevated Temperature Part I: Mechanical Properties
Autorzy:
Kaczorowski, M.
Skoczylas, P.
Gulbinowicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/381428.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
creep resistant alloy
Ni alloy
mechanical properties
hydrogen embrittlement
stop żarowytrzymały
stop Ni
właściwości mechaniczne
kruchość wodorowa
Opis:
The results of experimental study of mechanical properties degradation of creep resistant Ni-base alloy are presented. The material studied was subjected to long-term influence of high pressure hydrogen atmosphere at temperature 750K and 850K. The mechanical properties of specimens taken at different distance from inner surface of thick wall tube were evaluated. The results of mechanical testing showed distinct influence of the temperature on mechanical properties of Ni creep resistant alloy. Moreover, the mechanical properties of studied alloy depend on the location of the specimen with respect to the dissociated ammonia source i.e. distance from the inner surface of the chamber. The results of mechanical testing show that the higher the distance from inner surface of the chamber the better mechanical properties of studied Ni base super-alloy.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3 spec.; 25-28
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the carbides and matrix on the wear resistance of nodular cast iron
Autorzy:
Gumienny, G.
Powiązania:
https://bibliotekanauki.pl/articles/380497.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloy
carbidic nodular cast iron
wear resistance
ADI
stop odporny na ścieranie
żeliwo sferoidalne
odporność na zużycie
Opis:
This paper presents the results of the abrasive wear resistance of selected types of nodular cast iron, including ADI, cooperating with quartz sand and 100 grit abrasive paper. It has been shown that carbides in nodular cast iron cause an increase in wear resistance of 6 to 12% depending on the surface fraction of the carbides and type of the matrix. For the same unit pressure the mass loss of the cast iron cooperating with quartz sand is many times larger than the cast iron cooperating with abrasive paper. For both abrasives the highest wear resistance showed nodular cast iron with upper and lower bainite and carbides.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 25-29
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and Properties of Coatings Made with Self Shielded Cored Wire
Autorzy:
Gucwa, M.
Winczek, J.
Bęczkowski, R.
Dośpiał, M.
Powiązania:
https://bibliotekanauki.pl/articles/381066.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloys
metallography
hardfacing
carbides
hardness
cored wire
stopy odporne na zużycie
metalografia
napawanie
węgliki
twardość
drut rdzeniowy
Opis:
The welding technologies are widely used for design of protection layer against wear and corrosion. Hardfacing, which is destined for obtaining coatings with high hardness, takes special place in these technologies. One of the most effective way of hardfacing is using self shielded flux cored arc welding (FCAW-S). Chemical composition obtained in flux cored wire is much more rich in comparison to this obtained in solid wire. The filling in flux cored wires can be enriched for example with the mixture of hard particles or phases with specified ratio, which is not possible for solid wires. This is the reason why flux cored wires give various possibilities of application of this kind of filler material for improving surface in mining industry, processing of minerals, energetic etc. In the present paper the high chromium and niobium flux cored wire was used for hardfacing process with similar heat input. The work presents studies of microstructures of obtained coatings and hardness and geometric properties of them. The structural studies were made with using optical microscopy and X- ray diffraction that allowed for identification of carbides and other phases obtained in the structures of deposited materials. Investigated samples exhibit differences in coating structures made with the same heat input 4,08 kJ/mm. There are differences in size, shape and distribution of primary and eutectic carbides in structure. These differences cause significant changes in hardness of investigated coatings.
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 39-42
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tribological Response of Heat Treated AISI 52100 Steels Against Steel and Ceramic Counterparts
Autorzy:
Türedi, E.
Yilmaz, M.
Senol, V.
Powiązania:
https://bibliotekanauki.pl/articles/382223.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloys
heat treatment
bearing steel
tribology
microscopy
stopy odporne na zużycie
obróbka cieplna
stal łożyskowa
trybologia
mikroskopia
Opis:
AISI 52100 bearing steels are commonly used in applications requiring high hardness and abrasion resistance. The bearing steels are working under dynamic loads in service conditions and their toughness properties become important. In order to provide the desired mechanical properties, various heat treatments (austenizing, quenching and tempering) are usually applied. In this study, AISI 52100 bearing steel samples were austenized at 900°C for ½ h and water quenched to room temperature. Then tempering was carried out at 795°C, 400°C and 200°C for ½ h. In order to investigate the effect of heat treatment conditions on wear behavior, dry friction tests were performed according to ASTM G99-05 Standard with a ‘ball-on-disk’ type tribometer. The samples were tested against steel and ceramic counterparts using the parameters of 100 m distance and 30 N load and 0.063 m/s rotational speed. After wear test, the surface characterization was carried out using microscopy. Wear loss values were calculated using a novel optical method on both flat and counterpart specimens.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 222-228
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cavitation Erosion of Nodular Cast Iron - Microstructural Effects
Autorzy:
Orłowicz, A. W.
Mróz, M.
Tupaj, M.
Trytek, A.
Jacek, M.
Radoń, M.
Powiązania:
https://bibliotekanauki.pl/articles/379634.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloy
nodular cast iron
cavitation erosion
distilled water
stop odporny na ścieranie
żeliwo sferoidalne
erozja kawitacyjna
woda destylowana
Opis:
The paper deals with susceptibility of nodular cast iron with ferritic-pearlitic matrix on cavitation erosion. Cavitation tests were carried out with the use of a cavitation erosion vibratory apparatus employing a vibration exciter operated at frequency of 20 kHz. The study allowed to determine the sequence of subsequent stages in which microstructure of cast iron in superficial regions is subject to degradation. The first features to be damaged are graphite precipitates. The ferritic matrix of the alloy turned out to be definitely less resistant to cavitation erosion compared to the pearlitic matrix component.
Źródło:
Archives of Foundry Engineering; 2017, 17, 4; 119-122
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Graphite Type on the Abrasive Wear of AlMg10 Matrix Composites
Autorzy:
Łągiewka, M.
Konopka, Z.
Zyska, A.
Nadolski, M.
Powiązania:
https://bibliotekanauki.pl/articles/380925.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast composites
abrasion resistant alloys
graphite particles
alloy AlMg
electrographite
kompozyty
stopy odporne na ścieranie
cząsteczki grafitu
stop AlMg
elektrografit
Opis:
The presented work discuss the influence of various types of graphite additions on the abrasive wear of AlMg10 matrix alloy composites. Flake graphite, electrographite, and short graphite fibre were used as a composite reinforcement. Composites containing 10 vol. % of graphite particles were produced by mechanical mixing of the liquid alloy with simultaneous introduction of the reinforcement. Composite suspensions were gravity cast into metal moulds. The achieved castings were tested for the abrasive wear. Also the pure matrix alloy was examined. Microphotographs of the produced materials were taken, the specimens were also examined after the abrasion test by observing the microsections perpendicular to the abraded surface. The carried out experiments allow to state that even the little addition of graphite influences beneficially the tribological properties of composite under small loads applied to the frictional pair. It was found that under the increased load (30 N) the least abrasive wear is exhibited by the composite reinforced with graphite fibre, the largest one occurring for the composite reinforced with electrographite. The composite reinforced with electrographite, however, exhibited the mass loss less by 25% than the pure matrix alloy.
Źródło:
Archives of Foundry Engineering; 2015, 15, 1 spec.; 65-68
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manufacturing Scheme of Spherical Grinding Bodies from Abrasion-Resistant Cast Iron Free of Shrinkage Defects
Autorzy:
Pustovalov, D. O.
Ablyaz, T.
Muratov, K. R.
Sharov, K. V.
Bogomyagkov, A. V.
Shumkov, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/381028.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
grinding
abrasion resistant cast iron
defects
casting in sand molds
szlifowanie
żeliwo odporne na ścieranie
wady
odlewanie w formach piaskowych
Opis:
This work presents a scheme for the manufacture of spherical grinding bodies used in grinding and crushing machinery as a grinding medium from abrasion-resistant cast iron CHKH16 (according to GOST 7769-82) free of shrinkage defects produced by casting into single sand molds with a vertical joint and by usingcoolers. The grinding efficiency in terms of material destruction and energy consumption has been studied according to a wide range of operating parameters and new scheme for calculating the sprue and supply system has been developed by the authors of the article. Its functionality has been substantiated, particularly the use of a central riser acting as a head and the use of coolers. The conducted numerical simulation has shown the dependence of a solid phase formation over time, which characterizes the direction of the system crystallization and determines the locations of the shrinkage defects concentration. The manufacture of the grinding body with a 100 mm diameter using the considered technology is presented in this paper.
Źródło:
Archives of Foundry Engineering; 2019, 3; 66-71
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tribological Characterization of Al-bronzes Used as Mold Materials
Autorzy:
Atapek, Ş. H.
Aktaş Çelik, G.
Polat, Ş.
Pisarek, B.
Powiązania:
https://bibliotekanauki.pl/articles/383212.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant
aluminium bronze
mechanical properties
tribological properties
tribocorrosion resistance
zużycie ścierne
brąz aluminiowy
właściwości mechaniczne
właściwości trybologiczne
odporność tribokorozyjna
Opis:
Among the copper based alloys, Cu-Al-X bronzes are commonly used as mold materials due to their superior physical and chemical properties. Mold materials suffer from both wear and corrosion, thus, it is necessary to know which one of the competitive phenomenon is dominant during the service conditions. In this study, tribo-corrosion behavior of CuAl10Ni5Fe4 and CuAl14Fe4Mn2Co alloys were studied and electrochemical measurements were carried out using three electrode system in 3.5 % NaCl solution in order to evaluate their corrosion resistance. In tribo-corrosion tests, alloys were tested against zirconia ball in 3.5 % NaCl solution, under 10N load with 0.04 m/s sliding speed during 300 and 600 m. The results indicate that (i) CuAl10Ni5Fe4 alloy is more resistant to NaCl solution compared to CuAl14Fe4Mn2Co alloy that has major galvanic cells within its matrix, (ii) although CuAl10Ni5Fe4 alloy has lower coefficient of friction value, it suffers from wear under dry sliding conditions, (iii) as the sliding distance increases, corrosion products on CuAl14Fe4Mn2Co surface increase at a higher rate compared to CuAl10Ni5Fe4 leading to a decrease in volume loss due to the lubricant effect of copper oxides.
Źródło:
Archives of Foundry Engineering; 2017, 17, 4; 7-12
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Thermal Nodes Reduction in Wall Connections of the Charge-Handling Furnace Grates on Thermal Stresses
Autorzy:
Bajwoluk, Artur
Gutowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/2079830.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast grates
heat-resistant castings
heat treatment equipment
thermal stress analyses
ruszty
odlewy żaroodporne
sprzęt do obróbki cieplnej
analiza naprężeń termicznych
Opis:
The paper presents FEM approach for comparative analyses of wall connections applied in cast grates used for charge transport in furnaces for heat and thermal-chemical treatment. Nine variants of wall connection were compared in term of temperature differences arising during cooling process and stresses caused by the differences. The presented comparative methodology consists of two steps. In first, the calculations of heat flow during cooling in oil for analysed constructions were carried out. As a result the temperature distributions vs cooling time in cross-sections of analysed wall connections were determined. In the second step, based on heat flow analyses, calculations of stresses caused by the temperature gradient in the wall connections were performed. The conducted calculations were used to evaluate an impact of thermal nodes reduction on maximum temperature differences and to quantitative comparison of various base design of the cast grate wall connection in term of level of thermal stresses and their distribution during cooling process. The obtained results clearly show which solution of wall connection should be applied in cast grate used for charge transport in real constructions and which of them should be avoided because the risk of high thermal stresses forming during cooling process.
Źródło:
Archives of Foundry Engineering; 2021, 21, 3; 53-58
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structures of the EL-Hard Padding Welds as a Function of the Abrasive Wear Resistance
Autorzy:
Napiórkowski, J.
Konat, Ł.
Pękalski, G.
Kołakowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/381810.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloy
padding weld layer
operational characteristics
mechanical properties
structural properties
stop odporny na ścieranie
charakterystyka eksploatacyjna
właściwości mechaniczne
właściwości strukturalne
Opis:
In this work we report the phase structures of the EL-Hard padding weld layers and their effect on their abrasive wear resistance. The application of light and electron scanning microscopy examinations revealed subtle differences in the structures of the padding welds which affect their strength and usable properties. Abrasive wear resistance tests utilizing a “spinning bowl” method performed in real soil masses and hardness tests showed a close relationship between the abrasive wear resistance values and chemical composition of the tested padding welds. The obtained results are explained by the presence of the carbide - forming elements such as B, Cr, Mo, Nb, V and W in the chemical composition and types of the carbide phases present in the structures of the EL-Hard padding welds.
Źródło:
Archives of Foundry Engineering; 2013, 13, 1 spec.; 73-82
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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