Effect of Chemical Composition upon pinholes formation in Compacted graphite cast iron

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F08%3A00019362" target="_blank" >RIV/61989100:27360/08:00019362 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Chemical Composition upon pinholes formation in Compacted graphite cast iron

Popis výsledku v původním jazyce

Purpose: This study concerns the formation of pinholes in castings by reaction between cast iron with compacted graphite and green sand mould. Methodology: Experiments were done on bar castings moulded in green bentonite mixtures without carbonaceous matters. Moulding sand moisture, aluminium and titanium content in the melt were purposely changed. Metal was melted in a 100 kg furnace by remelting the uniform charge of return material. Metal was inoculated all at once in a ladle and modified in a reaction chamber in a mould or as sandwich method in a pouring ladle. Findings: The formation of pinholes was caused not only by high moisture of the mould but this defect was sensible to aluminium content in metal. With Al content above 200 ppm there exists astrong probability of pinholes formation, and namely in practical terms without respect to moulding mixture moisture. But great difference between the pinholes amount when modifying cast iron in a mould and in a ladle has been found out.

Název v anglickém jazyce

Effect of Chemical Composition upon pinholes formation in Compacted graphite cast iron

Popis výsledku anglicky

Purpose: This study concerns the formation of pinholes in castings by reaction between cast iron with compacted graphite and green sand mould. Methodology: Experiments were done on bar castings moulded in green bentonite mixtures without carbonaceous matters. Moulding sand moisture, aluminium and titanium content in the melt were purposely changed. Metal was melted in a 100 kg furnace by remelting the uniform charge of return material. Metal was inoculated all at once in a ladle and modified in a reaction chamber in a mould or as sandwich method in a pouring ladle. Findings: The formation of pinholes was caused not only by high moisture of the mould but this defect was sensible to aluminium content in metal. With Al content above 200 ppm there exists astrong probability of pinholes formation, and namely in practical terms without respect to moulding mixture moisture. But great difference between the pinholes amount when modifying cast iron in a mould and in a ladle has been found out.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F08%2F0789" target="_blank" >GA106/08/0789: Nukleace grafitu a možnosti řízení jeho morfologie ve slitinách železa</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

48th Foundry International Conference

ISSN

1318-9123

e-ISSN

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Svazek periodika

48

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

2

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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