Preparation and Evaluation of Properties of Cast Metallic Foams with Regular Inner Structure

Lichý, Petr; Elbel, T.; Kroupová, Ivana; Radkovský, Filip

doi:10.1515/amm-2017-0251

Cited by 9 publications

(10 citation statements)

References 4 publications

(9 reference statements)

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“…The size and shape of these castings are defined on the basis of the properties, at given process repeatability and in compliance with the process and production conditions. 6 The defined properties of these modern materials are crucial for the other applications. 7…”

Section: Methods Of Productionmentioning

confidence: 99%

Production of cast porous metal

Radkovský¹,

Merta²

2019

Mater. Tehnol.

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The article deals with the foundry methods of manufacturing porous metal; it is focused on the materials with a regular arrangement of internal cells. Currently, there are many fields dealing with the problem of porous metals by either optimizing the already known technologies, developing new ones or using porous metals. The production of a porous metal with a regular structure of cells and the possibility of its functional usage are the main subjects of this article. Due to their shapes, sizes and distribution of internal pores, cast porous metals exhibit various properties including reduced weight, sufficient strength, an ability to absorb impact energy, a possibility to conduct heat, etc., that allow a wide range of applications in the areas such as construction, transport or power engineering.

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Section: Methods Of Productionmentioning

confidence: 99%

Production of cast porous metal

Radkovský¹,

Merta²

2019

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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“…In order to ensure fast filling, the inlet system was designed as an overpressure. The gating system was then designed as slightly oversized in order to achieve higher rigidity of the resulting glued pattern [21]. Ratio of individual elements of the inlet system: gate area 1: area of the distribution runner 1.1: area of the sprue pole 1.2.…”

Section: Production Of Porous Metal Grids From Aluminum Alloymentioning

confidence: 99%

Archives of Foundry Engineering

Radkovský,

Merta,

Obzina

2020

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The article describes the design of a proven technology for the production of metal foam and porous metal by the foundry. Porous metal formed by infiltrating liquid metal into a mould cavity appears to be the fastest and most economical method. However, even here we cannot do without the right production parameters. Based on the research, the production process was optimised and subsequently a functional sample of metal foam with an irregular internal structure -a filter -was produced. The copper alloy filter was cast into a gypsum mould using an evaporable model. Furthermore, a functional sample of porous metal with a regular internal structure was produced -a heat exchanger. The aluminium alloy heat exchanger was cast into a green sand mould using preforms. Also, a porous metal casting with a regular internal structure was formed for use as an element in deformation zones. This aluminium alloy casting was made by the Lost Foam method. The aim is therefore to ensure the production of healthy castings, which would find use in the field of filtration of liquid metal or flue gases, in vehicles in the field of shock energy absorption and also in energy as a heat exchanger.

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Preparation and Evaluation of Properties of Cast Metallic Foams with Regular Inner Structure

Cited by 9 publications

References 4 publications

Production of cast porous metal

Production of cast porous metal

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

Archives of Foundry Engineering

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