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Tytuł:
Influence of the Thermal Reclamation of the Spent Core Sand Matrix on Its Reuse
Autorzy:
Łucarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/380885.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermal reclamation
spent sand
thermal reclaimer
hot-box technology
regeneracja cieplna
usuwanie piasku
odzysk
technologia hot-box
Opis:
The investigation results of the thermal reclamation of spent core sands made in the hot-box technology are presented in the paper. Energy-consumption of the process was tested by recording the media consumption during the thermal treatment of the determined intensity. Gas demands in dependence of the reclamation process temperatures were compared. During the reclamation process the reclaimed material samples were taken to test ignition losses in order to determine the efficiency of the realised procedures. The influence of the reclamation temperature on the quality of the obtained reclaimed material was checked. The effects of the realised reclamation procedures of the same moulding sand at various temperatures were also assessed on the grounds of strength of moulding sands prepared on the bases of the obtained reclaims. It was found that the process energy-consumption can depend on the expected core sand parameters. The attention was drawn to the fact, that bearing of costs for the thermal reclamation - very often - does not correspond directly with the obtained effects. The thermal reclamation performed very intensively, which corresponds with the costs increase, is not always needed for obtaining the core sand of parameters comparable with the sand made of fresh components.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1 spec.; 27-30
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wybranych parametrów regeneracji termicznej zużytej masy rdzeniowej na skuteczność prowadzonych zabiegów
The Impact of Selected Parameters of Thermal Reclamation of Used Sand on the Effectiveness of Reclamation Treatments
Autorzy:
Łucarz, M.
Dańko, R.
Dereń, M.
Powiązania:
https://bibliotekanauki.pl/articles/380851.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
regeneracja termiczna
regenerator termiczny
masa zużyta
technologia hot-box
thermal reclamation
thermal reclaimer
used sand
hot-box technology
Opis:
W publikacji przedstawiono wyniki badań, których celem było określenie wpływu wybranych parametrów pracy doświadczalnego regeneratora termicznego na skuteczność jego działania. Efektywność pracy urządzenia przeprowadzono analizując wpływ: temperatury pracy, temperatury powietrza fluidyzacji, stopnia nagrzania komory regeneratora termicznego oraz sposobu mieszania złoża. Badania wykonano na stanowisku doświadczalnym zainstalowanym w hali maszyn odlewniczych Wydziału Odlewnictwa AGH. Ocenę wpływu poszczególnych parametrów dokonano na podstawie badania strat prażenia pozyskanego regeneratu. Wykonano także badania wytrzymałości na zginanie kształtek z masy rdzeniowej w uniwersalnej maszynie do wykonywania próbek testowych i małych rdzeni w technologii hot-box (LUT).
The publication presents the results of a study aimed at determining the effect of selected parameters of the experimental thermal regenerator on its effectiveness. Efficiency of operation was carried out by analysing the effect of: operating temperature, fluidizing air temperature, heat degree in regenerator chamber and method of mixing fluidized bed. The research was conducted at the experimental station installed in the machine hall of the Faculty of Foundry Engineering AGH UST. Assessment of the impact of individual parameters was based on loss on ignition of achieved reclaims. Studies of bending strength of the core sands prepared with reclaim in hot-box technology are also presented.
Źródło:
Archives of Foundry Engineering; 2015, 15, 4 spec.; 91-94
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Automatic Core Shooting Parameters in Hot-Box Technology on the Strength of Sodium Silicate Olivine Moulding Sands
Autorzy:
Stachowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/382292.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry
sodium silicate
olivine sand
hot-box process
core shooting
odlewnictwo
krzemian sodu
piasek oliwinowy
proces hot-box
rdzeń
Opis:
The paper presents the results of preliminary research on the application of olivine moulding sands with hydrated sodium silicate containing 1.5 % wt. of binder to perform ecological casting cores in hot-box technology using a semi-automatic core shooter. The following parameters were used in the process of core shooting: initial shot pressure of 6 bar, shot time 3 s, the temperature of the core-box: 200, 250 and 300°C and the core curing time: 30, 60, 90, 120 and 150 s. The matrix of the moulding mixture was olivine sand, and the binder of the sandmix was commercial, unmodified hydrated sodium silicate with molar module SiO2/Na2O of 2.5. In one shot of the automatic core-shooter were formed three longitudinal specimens (cores) with a dimensions 22.2×22.2×180 mm. The samples obtained in this way were subjected to the assessment of the influence of the shooting parameters, i.e. shooting time, temperature and curing time in core-box, using the following criteria: core box fill rate, mechanical strength to bending RgU, apparent density, compaction degree and susceptibility to friability of sand grains after hardening. The results of trials on the use of olivine moulding sands with hydrated sodium silicate (olivine SSBS) in the process of core shooting made it possible to determine the conditions for further research on the improvement of inorganic hot-box process technology aimed at: reduction of the heating temperature and the curing time. It was found that correlation between the parameters of the shooting process and the bending strength of olivine moulding sands with sodium silicate is observed.
Źródło:
Archives of Foundry Engineering; 2020, 20, 1; 67-72
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Thermal Reclamation Temperature on the Strength of the Moulding Sand Made of the Reclaim in the Hot-box Technology
Autorzy:
Łucarz, M.
Grabowska, B.
Powiązania:
https://bibliotekanauki.pl/articles/380159.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spent sand
thermal analysis
thermal reclamation
thermal reclaimer
hot-box technology
usuwanie piasku
analiza termiczna
regeneracja termiczna
technologia hot-box
Opis:
The results of the thermal reclamation investigations of the spent moulding sand with the Ekotec 35 binder, are presented in the paper. The reclamation process of the quartz matrix was carried out on the basis of the author's own method of selecting the reclamation temperature. On the bases of the performed thermo-gravimetric analysis of the binder the temperature range required for the efficient thermal reclamation was indicated. In order to confirm the assumption the thermal reclamations were performed at a temperature determined by the TG and - for comparisons - at a lower and higher temperature. During the reclamation process samples of the reclaim were taken for testing ignition losses in order to determine the process efficiency. The correctness of the assumed method of selecting the temperature range of the thermal reclamation of spent moulding sand with the Ekotec 35 binder was confirmed.
Źródło:
Archives of Foundry Engineering; 2015, 15, 1 spec.; 131-135
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studying the Technology of Creating Cortical Electrode Instruments using the Rapid Prototyping Technology
Autorzy:
Ablyaz, T. R.
Shumkov, A. A.
Muratov, K. R.
Powiązania:
https://bibliotekanauki.pl/articles/382073.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot investment casting
prototyping electrode instrument
galvanic treatment
stereolithography
photopolymers
Opis:
This paper shows the results of studying the technology of manufacturing cortical electrode-instruments (EI) with the use of indirect methods of the Rapid Prototyping technology. Functional EI prototypes were made by layered synthesis of the photopolymer material with the use of the stereolithography technology (SLA - Stereo Lithography Apparatus). The article is focused on two methods of indirect EI manufacturing. One of the EI prototypes was used for making a molded wax model for hot investment casting, followed by applying copper coating. The second prototype was used for applying copper plating to a prepared current-conductive layer. As a result of EDMing a steel workpiece, both EIs reached the desired depth, which is 1 mm. The copper plating applied to the EI preserves its integrity. Through the use of the casting technology, there is a possibility to cut the economic costs by 35%. Using a prototype with preliminarily applie conductive coating makes it possible to make geometrically-complex EIs.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 157-162
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie PLA jako spoiwa w masach formierskich i rdzeniowych
Application of PLA as a Binder in Molding and Core Sands
Autorzy:
Kozłowski, J.
Kochański, A.
Perzyk, M.
Tryznowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/381798.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
materiały innowacyjne
innowacyjne technologie odlewnicze
biopolimery
spoiwa
piasek otaczany
metoda HOT-BOX
innovative materials
innovative foundry technologies
polymers
binder
sand surrounded
HOT-BOX method
Opis:
Rosnąca popularność polimerów biodegradowalnych, możliwości ich wytwarzania, przetwarzania i wykorzystania, stwarzają szansę opracowania nowych materiałów wiążących, do zastosowania w przemyśle odlewniczym. Nowe spoiwa biopolimerowe, spełniające wymagania z zakresu ochrony środowiska, mogą stanowić alternatywę dla dotychczas stosowanych spoiw do mas formierskich i rdzeniowych, w przypadku uzyskania wymaganych właściwości wytrzymałościowych i technologicznych. Prezentowane rozwiązanie, alternatywne do dotychczas opisywanych w literaturze, obejmujące badania mas otrzymywanych z piasków otaczanych spoiwem biodegradowanlym PLA, dotyczy optymalizacji właściwości wytrzymałościowych, w odniesieniu do procentowej zawartości biopolimeru, temperatury i czasu wytwarzania form i rdzeni metodą HOT-BOX. Uzyskane wyniki pozwalają sądzić, że biopolimery mogą być skutecznym zamiennikiem dotychczas stosowanych spoiw mas formierskich i rdzeniowych, a metoda wytwarzania z użyciem piasków otaczanych, może być równie skuteczna jak metody alternatywne.
Currently moulding sand with biopolymers as a binding agent appears to be probably the most interesting achievement in the mould production from ecology point of view. New biopolymer materials offer the parameters comparable to those which have been in use up to now. Moulding sands with a biopolymer binder were produced. The moulding process of 2% PLA sandmix involving different fusion temperatures and times was studied and the results presented. The results of observations and ultimate tensile strength tests were offered. The obtained results point to the fact that the new sandmix moulding method offered similar results that obtained in the literature. The issue is viewed as requiring further research.
Źródło:
Archives of Foundry Engineering; 2014, 14, 2 spec.; 51-54
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Repair of Precision Castings Made of the Inconel 713C Alloy
Autorzy:
Łyczkowska, K.
Adamiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/381369.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
weldability
Inconel 713C
precision castings
hot cracks
spawalność
odlewy precyzyjne
pęknięcia
Opis:
Inconel 713C precision castings are used as aircraft engine components exposed to high temperatures and the aggressive exhaust gas environment. Industrial experience has shown that precision-cast components of such complexity contain casting defects like microshrinkage, porosity, and cracks. This necessitates the development of repair technologies for castings of this type. This paper presents the results of metallographic examinations of melted areas and clad welds on the Inconel 713C nickel-based superalloy, made by TIG, plasma arc, and laser. The cladding process was carried out on model test plates in order to determine the technological and material-related problems connected with the weldability of Inconel 713C. The studies included analyses of the macro- and microstructure of the clad welds, the base materials, and the heat-affected zones. The results of the structural analyses of the clad welds indicate that Inconel 713C should be classified as a low-weldability material. In the clad welds made by laser, cracks were identified mainly in the heat-affected zone and at the melted zone interface, crystals were formed on partially-melted grains. Cracks of this type were not identified in the clad welds made using the plasma-arc method. It has been concluded that due to the possibility of manual cladding and the absence of welding imperfections, the technology having the greatest potential for application is plasma-arc cladding.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 210-216
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fracture mechanisms in steel castings
Autorzy:
Stradomski, Z.
Stachura, S.
Stradomski, G.
Powiązania:
https://bibliotekanauki.pl/articles/947569.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast steel
hot cracking
solidification
segregation
staliwo stopowe
pękanie gorące
krzepnięcie
segregacja
Opis:
The investigations were inspired with the problem of cracking of steel castings during the production process. A single mechanism of decohesion – the intergranular one – occurs in the case of hot cracking, while a variety of structural factors is decisive for hot cracking initiation, depending on chemical composition of the cast steel. The low-carbon and low-alloyed steel castings crack due to the presence of the type II sulphides, the cause of cracking of the high-carbon tool cast steels is the net of secondary cementite and/or ledeburite precipitated along the boundaries of solidified grains. Also the brittle phosphor and carbide eutectics precipitated in the final stage solidification are responsible for cracking of castings made of Hadfield steel. The examination of mechanical properties at 1050°C revealed low or very low strength of high-carbon cast steels.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 88-91
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diffusion Coefficient in the Zinc Coating Shaped on the Surface of Cast Iron and Steel Alloys
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Siekaniec, D.
Powiązania:
https://bibliotekanauki.pl/articles/379933.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot-dip galvanizing
intermetallic sublayer
diffusion coefficient
cynkowanie zanurzeniowe
podwarstwa międzymetaliczna
współczynnik dyfuzji
Opis:
The article presents the method to assess the diffusion coefficient D in the sub-layer of intermetallic phases formed during hot-dip galvanizing “Armco” iron and ductile cast iron EN-GJS-500-7. Hot-dip galvanizing is one of the most popular forms of long-term protection of Fe-C alloys against corrosion. The process for producing a protective layer of sufficient quality is closely related to diffusion of atoms of zinc and iron. The simulation consist in performed a hot-dip galvanizing in laboratory condition above Fe-C alloys, in the Department of Engineering of Cast Alloys and Composites. Galvanizing time ranged from 15 to 300 seconds. Then metallographic specimens were prepared, intermetallic layers were measured and diffusion coefficient (D) were calculated. It was found that the diffusion coefficient obtained during hot-dip galvanizing “Armco” iron and zinc is about two orders of magnitude less than the coefficient obtained on ductile cast iron EN-GJS-500-7.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2; 43-46
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hot Dipping of Chromium Low-alloyed Steel in Al and Al-Si Eutectic Molten Baths
Autorzy:
Attia, G. M.
Afify, W. M. A.
Ammar, M. I.
Powiązania:
https://bibliotekanauki.pl/articles/1837787.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
coating
hot dipping
aluminizing
chromium low alloyed steel
powłoka
aluminiowanie
stal niskostopowa chromowa
Opis:
Chromium low alloyed steel substrate was subjected to aluminizing by hot dipping in pure aluminium and Al-Si eutectic alloy at 750°C and 650°C respectively, for dipping time up to 45 minutes. The coated samples were subjected for investigation using an optical microscope, scanning electron microscopy (SEM), Energy-dispersive X-ray analyzer (EDX) and X-ray diffraction (XRD) technique. Cyclic thermal oxidation test was carried out at 500°C for 72 hours to study the oxidation behaviour of hot-dipped aluminized steel. Electrochemical corrosion behavior was conducted in 3wt. %NaCl aqueous solution at room temperature. The cyclic thermal oxidation resistance was highly improved for both coating systems because of the formation of a thin protective oxide film in the outermost coating layer. The gain in weight was decreased by 24 times. The corrosion rate was decreased from 0.11 mmpy for uncoated specimen to be 2.9 x10-3 mmpy for Aluminum coated steel and 5.7x 10-3 mmpy for Al-Si eutectic coated specimens. The presence of silicon in hot dipping molten bath inhabit the growth of coating intermetallic layers, decrease the total coating thickness and change the interface boundaries from tongue like shape to be more regular with flatter interface. Two distinct coating layers were observed after hot dipping aluminizing in Al bath, while three distinct layers were observed after hot dipping in Al-Si molten bath.
Źródło:
Archives of Foundry Engineering; 2021, 21, 1; 37-50
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hot Dipping of Chromium Low-alloyed Steel in Al and Al-Si Eutectic Molten Baths
Autorzy:
Attia, G. M.
Afify, W. M. A.
Ammar, M. I.
Powiązania:
https://bibliotekanauki.pl/articles/1837860.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
coating
hot dipping
aluminizing
chromium low alloyed steel
powłoka
aluminiowanie
stal niskostopowa chromowa
Opis:
Chromium low alloyed steel substrate was subjected to aluminizing by hot dipping in pure aluminium and Al-Si eutectic alloy at 750°C and 650°C respectively, for dipping time up to 45 minutes. The coated samples were subjected for investigation using an optical microscope, scanning electron microscopy (SEM), Energy-dispersive X-ray analyzer (EDX) and X-ray diffraction (XRD) technique. Cyclic thermal oxidation test was carried out at 500°C for 72 hours to study the oxidation behaviour of hot-dipped aluminized steel. Electrochemical corrosion behavior was conducted in 3wt. %NaCl aqueous solution at room temperature. The cyclic thermal oxidation resistance was highly improved for both coating systems because of the formation of a thin protective oxide film in the outermost coating layer. The gain in weight was decreased by 24 times. The corrosion rate was decreased from 0.11 mmpy for uncoated specimen to be 2.9 x10-3 mmpy for Aluminum coated steel and 5.7x 10-3 mmpy for Al-Si eutectic coated specimens. The presence of silicon in hot dipping molten bath inhabit the growth of coating intermetallic layers, decrease the total coating thickness and change the interface boundaries from tongue like shape to be more regular with flatter interface. Two distinct coating layers were observed after hot dipping aluminizing in Al bath, while three distinct layers were observed after hot dipping in Al-Si molten bath.
Źródło:
Archives of Foundry Engineering; 2021, 21, 1; 30-50
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetyka wzrostu powłoki ochronnej podczas wysoko- i niskotemperaturowego cynkowania zanurzeniowego odlewów z żeliwa sferoidalnego
Growth kinetics of the protective coating during high- and low- temperature process of hot dip galvanizing of ductile iron castings
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Siekaniec, D.
Powiązania:
https://bibliotekanauki.pl/articles/380840.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cynkowanie zanurzeniowe
żeliwo sferoidalne
temperatura procesu
hot-dip galvanizing
ductile cast iron
process temperature
Opis:
W pracy przedstawiono porównanie mikrostruktury powłoki cynkowej otrzymanej na powierzchni odlewu z żeliwa sferoidalnego gatunku EN-GJS-5007 podczas zabiegu cynkowania zanurzeniowego w procesie „niskotemperaturowym” 450°C oraz „wysokotemperaturowym” 580°C. Zbadano kinetykę wzrostu powłoki cynkowej, zidentyfikowano wzrastające fazy Fe-Zn oraz występowanie wydzieleń „twardego cynku” w powłoce.
The paper presents a comparison of the zinc coating microstructure obtained on EN-GJS-500-7 grade ductile cast iron surface during the hot dip galvanizing in the "low temperature" 450 °C and "high temperature" 580 °C. The kinetics of growth of the zinc coating was investigated. The phases of Fe-Zn and the presence of precipitates "hard zinc" in the coating have been identified.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2 spec.; 47-50
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Coatings on Grey Cast Iron Fabricated by Hot-dipping in Pure Al, AlSi11 and AlTi5 Alloys
Autorzy:
Mola, R.
Bucki, T.
Wcisło, K.
Powiązania:
https://bibliotekanauki.pl/articles/381108.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot-dip aluminizing
coatings
grey cast iron
intermetallic phases
microstructure
powłoki
żeliwo szare
mikrostruktura
Opis:
Flake graphite cast iron was hot-dip coated with pure aluminium or aluminium alloys (AlSi11 and AlTi5). The study aimed at determining the influence of bath composition on the thickness, microstructure and phase composition of the coatings. The analysis was conducted by means of an optical microscope and a scanning electron microscope with an EDS spectrometer. It was found that the overall thickness of a coating was greatly dependent on the chemical composition of a bath. The coatings consisted of an outer layer and an inner intermetallic layer, the latter with two zones and dispersed graphite. In all the cases considered, the zone in the inner intermetallic layer adjacent to the cast iron substrate contained the Al5Fe2 phase with small amount of silicon; the interface between this phase and the cast iron substrate differed substantially, depending on the bath composition. In the coatings produced by hot-dipping in pure aluminium the zone adjacent to the outer layer had a composition similar to that produced from an AlTi5 bath, the Al3Fe phase was identified in this zone. The Al3Fe also contained silicon but its amount was lower than that in the Al5Fe2. In the coatings produced by hot-dipping in AlSi11, the zone adjacent to the outer layer contained the Al3FeSi phase. The analysis results showed that when AlSi11 alloy was applied, the growth mode of the inner layer changed from inwards to outwards. The interface between the Al5Fe2 phase and the cast iron substrate was flat and the zone of this phase was very thin. Locally, there were deep penetrations of the Al5FeSi phase into the outer layer, and the interface between this phase and the outer layer was irregular. Immersion in an AlTi5 bath caused that the inner intermetallic layer was thicker than when pure aluminium or AlSi11 alloy baths were used; also, some porosity was observed in this layer; and finally, the interface between the inner layer and the cast iron substrate was the most irregular.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1; 85-90
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the Surface Layer of Iron Casting on the Growth of Protective Coating During Hot-Dip Galvanizing
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Powiązania:
https://bibliotekanauki.pl/articles/379701.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot-dip galvanizing
ductile iron
surface roughness
surface layer
cynkowanie
żeliwo sferoidalne
chropowatość powierzchni
Opis:
The paper presents the results of investigations of the growth of protective coating on the surface of ductile iron casting during the hot-dip galvanizing treatment. Ductile iron of the EN-GJS-600-3 grade was melted and two moulds made by different technologies were poured to obtain castings with different surface roughness parameters. After the determination of surface roughness, the hot-dip galvanizing treatment was carried out. Based on the results of investigations, the effect of casting surface roughness on the kinetics of the zinc coating growth was evaluated. It was found that surface roughness exerts an important effect on the thickness of produced zinc coating.
Źródło:
Archives of Foundry Engineering; 2016, 16, 1; 25-28
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Role of Carbon in the Mechanism of Ferritic-Austenitic Cast Steel Solidification
Autorzy:
Stradomski, G.
Powiązania:
https://bibliotekanauki.pl/articles/381622.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
duplex cast steel
microstructure
hot crack
primary structure
staliwo typu duplex
mikrostruktura
pękanie
struktura
Opis:
The paper presents the results of research on the microstructure of GX2CrNiMoCuN25-6-3-3 and GX2CrNiMoCuN25-6-3 cast steels with a varying carbon content. The cause for undertaking the research were technological problems with hot cracking in bulk castings of duplex cast steel with a carbon content of approx. 0.06% and with 23% Cr, 8.5% Ni, 3% Mo and 2.4% Cu. The research has shown a significant effect of increased carbon content on the ferrite and austenite microstructure morphology, while exceeding the carbon content of 0.06% results in a change of the shape of primary grains from equiaxial to columnar.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3; 83-86
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł

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