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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:
The structure of the silumin coat on alloy cast steels
Autorzy:
Szymczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/382899.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innowacyjne technologie odlewnicze
powłoka zanurzeniowa
staliwo stopowe
silumin
innovative casting technologies
dip coating
alloy cast steel
Opis:
The work presents the analysis results of the structure of the coat obtained by dipping in silumin AlSi5 of two grades of alloy cast steel: GX6CrNiTi18-10 (LH18N9T) and GX39Cr13 (LH14). The temperature of the silumin bath was 750-5 C, and the hold-up time of the cast steel element [...] = 180 s. The absolute thickness of the coat obtained in the given conditions was g = 104 [...] on cast steel GX6CrNiTi18-10 and g = 132 [...] on GX39Cr13. The obtained coat consisted of three layers of different phase structure. The first layer from the base [...] was constructed of the phase AlFe including Si and alloy additives of the tested cast steel grades: Cr and Ni (GX6CrNiTi18-10) and Cr (GX39Cr13). The second layer [...] of intermetallic phases AlFe which also contains Si and Cr crystallizes on it. The last, external layer 'g2' of the coat consists of the silumin containing the intermetallic phases AlFeSi which additionally can contain alloy additives of the cast steel. It was shown that there were no carbides on the coat of the tested cast steels which are the component of their microstructure, as it took place in the case of the coat on the high speed steels.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 215-220
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Temperature on Ausferritic Nodular Cast Iron Microstructure
Autorzy:
Gumienny, G.
Klimek, L.
Powiązania:
https://bibliotekanauki.pl/articles/379556.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting materials
innovative casting technologies
nodular cast iron
ausferrite
annealing
innowacyjne materiały odlewnicze
innowacyjne technologie
żeliwo sferoidalne
wyżarzanie
Opis:
The work presents the results of the studies of the effect of the temperature on the microstructure of ausferritic nodular cast iron. The ausferrite in the matrix was obtained by way of a specific combination of molybdenum and copper. The cast iron underwent annealing at the temperatures of 520, 550 and 580°C. The work presents the effect of the annealing temperature on the fraction of austenite in the cast iron matrix. The annealed and non-annealed cast iron hardness is given. The work also proves that an increase in the temperature up to 580°C causes a drop in the cast iron hardness.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3 spec.; 21-24
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of master alloy amount and gating system design for ductile cast iron obtain in lost foam process
Autorzy:
Just, P.
Kaczorowski, R.
Pacyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/379923.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting technologies
ductile iron
inmold method
lost foam casting
innowacyjna technologia odlewnicza
żeliwo sferoidalne
metoda in mold
tracona piana
Opis:
The paper presents the optimization of master alloy amount for the high nodular graphite yield (80-90%) in cast iron obtain in lost foam process. The influence of the gating system configuration and the shape of the reaction chamber, the degree of spheroidisation cast iron was examined. Research has shown that the, optimal of master alloy amount of 1.5% by mass on casting iron. The degree of spheroidisation is also influenced by the gating system configuration. The best spheroidisation effect was obtained for liquid cast iron was fed into the reaction chamber from the bottom and discharged from the top.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 43-46
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3DP Technology for the Manufacture of Molds for Pressure Casting
Autorzy:
Skorulski, G.
Powiązania:
https://bibliotekanauki.pl/articles/383141.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative materials
innovative casting technologies
rapid prototyping
ceramic mold
pressure casting
materiały innowacyjne
innowacyjne technologie odlewnicze
prototypy
formy ceramiczne
odlewanie ciśnieniowe
Opis:
The paper presents the use of rapid prototyping technology of three dimensional printing (3DP) to make a prototype shell casting mold. In the first step, for identification purposes, a mold was prepared to enable different alloys to be cast. All molds being cast were designed in a universal CAD environment and printed with the zp151 composite material (Calcium sulfate hemihydrate) with a zb63 binder (2-pyrrolidone). It is designated to be used to prepare colourful models presenting prototypes or casting models and molds. The usefulness of 3DP technology for use with copper alloys, aluminum and zinc was analyzed. The strength of the mold during casting was assumed as a characteristic comparative feature in the material resistance to high temperature, the quality of the resulting casting and its surface roughness. Casting tests were carried out in vacuum – pressure casting. The casting programs applied, significantly increased the quality of castings and enabled precise mold submergence. Significant improvement was noted in the quality compared to the same castings obtained by gravity casting.
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 99-102
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental and Simulation Tests on the Impact of the Conditions of Casting Solidification from AlSi9Cu3 Alloy on their Structure and Mechanical Properties
Autorzy:
Hajkowski, J.
Ignaszak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/380310.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alloy Al-Si-Cu
casting solidification
casting technologies
microstructure
mechanical properties
stop Al-Si-Cu
krzepnięcie odlewu
technologie odlewania
mikrostruktura
właściwości mechaniczne
Opis:
The impact of casting conditions on microstructure a and mechanical properties was described, especially for cast products from AlSi9Cu3 alloy. Particular attention was paid to the parameters of dendritic structure: DAS 1 and DAS 2. Selected mechanical properties (by static tension test) of test castings made using basic technologies of casting: GSC - gravity sand casting, GDC - gravity die-casting and HPDC - high-pressure die-casting, are presented for cast-on test bars and cast separately. Casts were made of the same alloy AlSi9Cu3. Fractures and the zone near the fracture (after static tension test) was subjected to VT - visual tests, PT - penetration tests and metallographic tests. The condition of porosity (fracture zone) was also assessed. The analysis of virtual results was performed using the NovaFlow & Solid system together with the database and they were compared to experimental tests. This way of validation was applied in order to assess the correlation between the local rate of cooling and the size of DAS for GSC, GDC and HPDC technologies. Finally, the correlation between the parameters of structure and mechanical properties with regard to the impact of porosity was signalized.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 167-175
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Electrical Properties of Materials on Effectiveness of Heating Their Systems in Microwave Field
Autorzy:
Stachowicz, M.
Opyd, B
Granat, K.
Markuszewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/381305.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting technologies
microwaves
moulding sands
foundry instrumentation
electrical properties
innowacyjne technologie odlewnicze
mikrofale
masa formierskia
właściwości elektryczne
Opis:
In the paper presented are results of a research on influence of electrical and physico-chemical properties of materials being parts of multicomponent and multimaterial systems used in foundry practice on efficiency and effectiveness of microwave heating. Effectiveness of the process was evaluated on the grounds of analysis of interaction between selected parameters of permittivity and loss factor, as well as collective index of energy absorbed, reflected and transmitted by these materials. In the examinations used was a stand of wave guide resonance cavity for determining electrical properties and a stand of microwave slot line for determining balance of microwave power emitted into selected materials. The examinations have brought closer the possibility of forecasting the behaviour of multimaterial systems like e.g. model, moulding sand or moulding box in microwave field on the grounds of various electrical and physico-chemical properties. On the grounds of analysis of the results, possible was selecting a group of materials designed for building foundry instrumentation to be effectively used in electromagnetic field.
Źródło:
Archives of Foundry Engineering; 2014, 14, 2; 111-114
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method and Apparatus for Assessing the Properties of Slags
Autorzy:
Biernat, S.
Bydałek, A. W.
Wołczyński, W.
Holtzer, M.
Powiązania:
https://bibliotekanauki.pl/articles/381284.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmental protection
innovative materials
innovative casting technologies
laboratory station
slags
ochrona środowiska
innowacyjne materiały odlewnicze
technologie innowacyjne
stanowisko laboratoryjne
żużle
Opis:
A special Slag-Prop Cu database has been developed to archive data from laboratory and industrial tests related to post-reduction slags. In order to enrich the data areas, it was decided to design a system for measuring the temperature of the liquid slag and its viscosity. Objectives of research work are to gather information on the properties of post-slags such as the temperature of liquid slag and its viscosity. The discussed issues are especially important in the foundry practice. Designed research stand and using of database applications can greatly facilitate the work of metallurgists, foundrymen, technologists and scientists. The viscosity measurement was developed and presented earlier. The author's analytical methodology was supplemented by a thyristor measuring system (described in the article). The system temperature measurement can be performed simultaneously in 3 ways to reduce the measurement error. Measurement of the voltage mV - using the Seebeck effect can be measured throughout the entire range of thermocouple resistance, up to 1300 °C. Direct temperature measurement ⁰C - measurement only below 1000 ⁰C. Additional measurement - the measurement can also be read from the pyrometer set above the bath. The temperature and the reading frequency depend on the device itself. The principle of measurement is that in a molten metal / slag crucible, we put a N-type thermocouple. The thermocouples are hung by means of a tripod above the crucible and placed in a crucible. The thermocouple is connected to a compensating line dedicated to this type of thermocouple. The cable is in turn connected to a special multimeter that has the ability to connect to a computer and upload results. Temperature measurement can be performed simultaneously in 3 ways to reduce the measurement error. The Sn-Pb alloy has been subjected to testing for proper operation of the device. In this foot should be observed the supercooling of the liquid, which initiates the crystallization process and in which latent heat begins to exude raising the temperature until the coagulation temperature is reached.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 13-18
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the shape of the reaction chamber on spheroidisation of cast iron produced in the lost foam casting process with use of the inmold method
Autorzy:
Just, P.
Pacyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/382866.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
żeliwo sferoidalne
metoda in mold
tracona piana
innowacyjne technologie odlewnicze
komora reakcyjna
nodular cast iron
Inmold method
lost foam casting
innovative casting technologies
reaction chamber
Opis:
The article presents the results of the research on the influence of the shape of reaction chamber on spheroidisation of cast iron produced with use of the inmold method. The amounts of nodular graphite precipitates in castings produced with the use of different reaction chambers have been compared.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 175-178
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of an Advanced Cellulose Profile Used for the Manufacture of Gating Systems
Autorzy:
Zawieja, Z.
Sawicki, J.
Gumienny, G.
Sobczyk-Guzenda, A.
Powiązania:
https://bibliotekanauki.pl/articles/380939.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting technologies
innovative casting materials
cellulose profiles
gating system
aluminium silicates
gray cast iron
ausferrite
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
glinokrzemiany
żeliwo szare
Opis:
The here in paper contains the results of investigations on a new type of cellulose blend used for the manufacture of profiles applied in the process of making gating systems in the foundry industry. A standard cellulose profile was subjected to an experiment. During the experiment the profile was filled with a liquid cast iron and at the same time the temperatures of the liquid metal crystallizing inside the profile were measured as well as the temperature of the outer layer of the profile was controlled. Further, the microstructure of the cast iron, which crystallized out inside the cellulose profile, was analysed and the cellulose, thermally degraded after the experiment, was verified with the use of the chemical analysis method. Moreover, a quality analysis of the original as well as the degraded cellulose profile was run with the use of the FTIR infrared spectroscopy. The presented results revealed that the cellulose blend is aluminium silicate enriched and contains organic binder additives. The cast iron, which crystallized out, tended to have an equilibrium pearlitic structure with the release of graphite and carbides. The generation of disequilibrium ausferrite phases was also observed in the structure.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3; 123-128
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selection of materials and development of technology for the production of elements used in conditions of extreme tribological wear
Autorzy:
Wilk-Kołodziejczyk, D.
Pirowski, Z.
Grudzień-Rakoczy, M.
Bitka, A.
Chrzan, T.
Powiązania:
https://bibliotekanauki.pl/articles/2079807.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting technologies
wear
selection of materials
conditions of extreme
shell mold
innowacyjne technologie odlewnicze
zużycie tribologiczne
dobór materiałów
warunki ekstremalne
Opis:
Work was done as a part of the project " New generation haulage system of highly productive longwall systems" aiming to develop and implement a new longwall shearer system called KOMTRACK. The widely used EICOTRACK feed system developed forty years ago is not adapted to modern longwall shearers' power. Within the project, an innovative, flexible feed system with a modular structure was created with the possibility of continuous adjustment to the carbon wall's unevenness. Newly-developed three cast steels variants have been initially selected to fabricate this system's elements. The material's final selection was realized based on the tensile tests, Charpy impact tests, Brinell hardness surveys, and wear resistance measurements. Results analysis allowed to select cast steel marked as "2", which fulfilled all requirements and was used in further casting trials.
Źródło:
Archives of Foundry Engineering; 2021, 21, 4; 47-54
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer control the cooling process in permanent mold casting of Al-Si alloy
Sterowanie komputerowe procesem chłodzenia formy w odlewaniu kokilowym siluminów
Autorzy:
Władysiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/353901.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative materials & casting technologies
cooling
water mist
Al-Si alloy
innowacyjne materiały i technologie odlewnicze
chłodzenie
mgła wodna
stop Al-Si
Opis:
The paper presents the test results of a computerized control system the sequential cooling process of permanent mold with use of water mist in the gravity die casting process. It describes the process for preparing high-quality casts made of AlSi7Mg alloy that achieves enhanced mechanical properties. A scheme of developed device and drivers for selected methods of sequence cooling for manufacturing of castings made in permanent steel mold was presented here. Also the microstructure and mechanical properties of received aluminium casts were described. It was shown that the use of a computer system to control the water mist cooling point of the mold not only accelerates the cooling of the cast and the gravity die casting cycle shortens, but also it has a positive effect on the microstructure and mechanical properties of castings made of unmodified AlSi7Mg alloy in a raw state.
W pracy przedstawiono wyniki badań komputerowego systemu sterowania sekwencyjnym chłodzeniem kokili mgła wodna w odlewaniu grawitacyjnym. Opisano proces otrzymywania wysokojakościowych odlewów z siluminu AlSi7Mg o podwyższonych właściwościach mechanicznych. Przedstawiono opracowane urządzenie, programy sterujące dla zadanych metod wytwarzania odlewów kokilowych i sekwencji chłodzenia. Przedstawiono mikrostrukturę i własności mechaniczne otrzymanych odlewów siluminowych. W pracy wykazano, że zastosowanie systemu komputerowego do sterowania chłodzeniem punktowego mgła wodna nie tylko przyspiesza stygnięcie odlewu i skraca cykl odlewania kokilowego, ale również korzystnie wpływa na mikrostrukturę i własności mechaniczne odlewów z niemodyfikowanego siluminu AlSi7Mg w stanie surowym.
Źródło:
Archives of Metallurgy and Materials; 2013, 58, 3; 977-980
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Modification and Casting Technology on Structure of IN-713C Superalloy Castings
Autorzy:
Binczyk, F.
Cwajna, J.
Gradoń, P.
Mańka, M.
Powiązania:
https://bibliotekanauki.pl/articles/381572.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting materials
innovative casting technologies
nickel alloy IN-713C
modification
cobalt aluminate
macrostructure
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
stop niklu
modyfikacja
kobalt
makrostruktura
Opis:
The paper presents the results concerning impact of modification (volume and surface techniques), pouring temperature and mould temperature on stereological parameters of macrostructure in IN713C castings made using post-production scrap. The ability to adjust the grain size is one of the main issues in the manufacturing of different nickel superalloy castings used in aircraft engines. By increasing the grain size one can increase the mechanical properties, like diffusion creep resistance, in higher temperatures. The fine grained castings. on the other hand, have higher mechanical properties in lower temperatures and higher resistance to thermal fatigue. The test moulds used in this study, supplied by Pratt and Whitney Rzeszow, are ordinarily used to cast the samples for tensile stress testing. Volume modification was carried out using the patented filter containing cobalt aluminate. The macrostructure was described using the number of grains per mm2, mean grain surface area and shape index. Obtained results show strong relationship between the modification technique, pouring temperature and grain size. There was no significant impact of mould temperature on macrostructure.
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 11-14
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feeding and Cooling and Time of Thermal Treatment of a Massive Bush Made of the Complex Aluminum Bronze Cast by the Lost Foam
Autorzy:
Just, P.
Pisarek, B. P.
Powiązania:
https://bibliotekanauki.pl/articles/380931.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative materials
innovative casting technologies
lost foam
aluminium bronze
casting properties
riser head
steel internal chill
thermal treatment
nowoczesne materiały
innowacyjne technologie odlewnicze
właściwości odlewów
obróbka termiczna
Opis:
Small additions of Cr, Mo and W to aluminium-iron-nickel bronze are mostly located in phases &kappa i (i=II; III; IV),and next in phase &alpha (in the matrix) and phase γ2. They raise the temperature of the phase transformations in aluminium bronzes as well as the casts’ abrasive and adhesive wear resistance. The paper presents a selection of feeding elements and thermal treatment times which guarantees structure stability, for a cast of a massive bush working at an elevated temperature (650–750°C) made by means of the lost foam technology out of composite aluminium bronze. So far, there have been no analyses of the phenomena characteristic to the examined bronze which accompany the process of its solidification during gasification of the EPS pattern. There are also no guidelines for designing risers and steel internal chill for casts made of this bronze. The work identifies the type and location of the existing defects in the mould’s cast. It also proposes a solution to the manner of its feeding and cooling which compensates the significant volume contraction of bronze and effectively removes the formed gases from the area of mould solidification. Another important aspect of the performed research was establishing the duration time of bronze annealing at the temperature of 750°C which guarantees stabilization of the changes in the bronze microstructure – stabilization of the changes in the bronze HB hardness.
Źródło:
Archives of Foundry Engineering; 2014, 14, 4; 39-44
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Alloy Additions on the Structure and Mechanical Properties of the AlSi7Mg0.3 Alloy
Autorzy:
Pisarek, B. P.
Rapiejko, C.
Szymczak, T.
Pacyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/380373.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innowacyjne technologie odlewnicze
materiały odlewnicze
odlew precyzyjny
stopy aluminium
dodatki stopowe
SDAS
indeks jakości
innovative casting technologies
innovative materials
precision investment casting
aluminium alloys
alloy additions
quality index
Opis:
The study presents the results of the investigations of the effect of Cu, Ni, Cr, V, Mo and W alloy additions on the microstructure and mechanical properties of the AlSi7Mg0.3 alloy. The examinations were performed within a project the aim of which is to elaborate an experimental and industrial technology of producing elements of machines and devices complex in their construction, made of aluminium alloys by the method of precision investment casting. It was demonstrated that a proper combination of alloy additions causes the crystallization of complex intermetallic phases in the silumin, shortens the SDAS and improves the strength properties: Rm, Rp0.2,HB hardness. Elevating these properties reduces At, which, in consequence, lowers the quality index Q of the alloy of the obtained casts. Experimental casts were made in ceramic moulds preliminarily heated to 160 °C, into which the AlSi7Mg0.3 alloy with the additions was cast, followed by its cooling at ambient temperature. With the purpose of increasing the value of the quality index Q, it is recommended that the process of alloy cooling in the ceramic mould be intensified and/or a thermal treatment of the casts be performed (ageing) (T6).
Źródło:
Archives of Foundry Engineering; 2017, 17, 1; 137-142
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 50

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