Use of precursors for the production of cast metallic foams

Kroupová, Ivana; Lichý, Petr; Merta, Václav; Lana, I. G. Dalla

doi:10.17222/mit.2018.141

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Thus, the complicated process of mechanical removal of the filler material, which used to be a common disadvantage of all the processes using precursors made of standard moulding mixtures, is now eliminated. 7 This way, the manufacturing of precursors allows the formation of the same size, shape and the resulting characteristics of precursors.…”

Section: Resultsmentioning

confidence: 99%

Use of water-soluble precursors in the production of cast metal foams

Kroupová¹,

Lichý²,

Lana³

2020

Mater. Tehnol.

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The paper is devoted to the field of manufacturing cast metallic foams-porous metal materials-with a stochastic arrangement of the inner cavities. The mastering of inexpensive ways of manufacturing metallic foams is a prerequisite for a full utilization of such a material. That is why the experimental part was devoted to the casting technologies for the production of metal foams based on conventional foundry processes. In the experiment, the infiltration of molten metal into mould cavities filled with precursors was tested. Particular attention was paid to the use of water-soluble precursor materials. It is assumed that a thorough knowledge of the production parameters and conditions will contribute to the expansion of the foundry range, which can also increase the competitiveness of this industry on a global scale.

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Section: Resultsmentioning

confidence: 99%

Use of water-soluble precursors in the production of cast metal foams

Kroupová¹,

Lichý²,

Lana³

2020

Mater. Tehnol.

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“…The used material was the AlSi10Mg alloy. 4,5 The next step was the creation of several different variants of the gating system and their comparison. Subsequently, the suitable candidate for the design-ofexperiments (DoE) analysis was chosen.…”

Section: Experimental Partmentioning

confidence: 99%

Use of numerical simulation in the production of porous-metal castings

Radkovský¹,

Merta²

2020

Mater. Tehnol.

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The article describes the design and optimization of the foundry production of porous metal. The formation of porous metal by infiltrating liquid metal into the mould cavity appears to be the fastest and most economical way. However, it is not possible to do it without proper production parameters. For this reason, a 3D model of a particular casting is first created in the Rhinoceros 4.0 software and then the entire production process is designed and optimized using the numerical simulation in the MAGMASOFT® 5.4 software. To create cavities in the casting, the use of sand cores is considered and the used unit bentonite mixture (UBM) becomes the mould material. With the simulations of pouring and solidification of the casting, the right conditions for the real production can be defined precisely; the time and financial costs connected with the production of non-conforming pieces can be saved. Thus, the aim is to ensure the production of sound castings that will find their use in the field of energy, specifically as heat exchangers.V~lanku avtorji opisujejo dizajn in optimizacijo ulivanja poroznih kovinskih ulitkov. Ugotavljajo, da je formiranje porozne kovine s postopkom infiltracije raztaljene kovine v votlino livarskega modela najhitrej{i in najbolj ekonomi~en na~in. Toda tudi v tem primeru tega postopka ni mo`no izvajati brez ustreznih proizvodnih parametrov. Zato so avtorji najprej kreirali 3D model izbranega ulitka s programsko opremo Rhinoceros 4.0 in nato s programom MAGMASOFT® 5.4 izvedli numeri~no simulacijo dizajna in optimizacije celotnega proizvodnega procesa. Za izdelavo livarskega modela so uporabili pe{~ena jedra in betonitno me{anico (UBM). S simulacijo polnjenja modela z raztaljeno kovino in strjevanja ulitka pri optimalnih pogojih so tako v realni proizvodnji lahko natan~no dolo~ili~as in stro{ke, ter s tem prihranke, pri izdelavi ulitkov razli~nih zahtevnih oblik. Avtorji so tako omogo~ili proizvodnjo kvalitetnih ulitkov, uporabnih na energetskem podro~ju, predvsem za izmenjevalnike toplote. Klju~ne besede: porozna kovina, programska oprema za simulacijo, litje, toplotni izmenjevalnik

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“…technology of production of cast metallic foams with irregular arrangement of internal cavities [33,34]; • technology of production of cast metallic foams with regular arrangement of internal cavities [35,36].…”

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confidence: 99%

Preparation of Cast Metallic Foams with Irregular and Regular Inner Structure

et al. 2021

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The aim of this paper is to summarize the possibilities of foundry methods for the production of metallic foams. At present, there are a number of production technologies for this interesting material, to which increasing attention has been paid in recent years. What is unique about metallic foams is the combination of their physical and mechanical properties. As part of our research, we designed and verified four main methods of metallic foam production by the foundry technology, whose products are metallic foam castings with regular and irregular arrangements of internal cavities. All these methods use materials and processes commonly used in conventional foundry technologies. The main idea of the research is to highlight such technologies for the production of metallic foams that could be provided by manufacturing companies without the need to introduce changes in production. Moreover, foundry methods for the production of metallic foams have the unique advantage of being able to produce even complex shaped parts and can thus be competitive compared to today’s established technologies, the output of which is usually only a semi-finished product for further processing. This fact was the main motivation for the research.

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Use of precursors for the production of cast metallic foams

Cited by 3 publications

References 6 publications

Use of water-soluble precursors in the production of cast metal foams

Use of water-soluble precursors in the production of cast metal foams

Use of numerical simulation in the production of porous-metal castings

Preparation of Cast Metallic Foams with Irregular and Regular Inner Structure

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