The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method

The purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead to cast iron scrapping....

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Main Authors: Jan Jezierski, Michał Jureczko, Rafał Dojka
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/10/8/1022
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author Jan Jezierski
Michał Jureczko
Rafał Dojka
author_facet Jan Jezierski
Michał Jureczko
Rafał Dojka
author_sort Jan Jezierski
collection DOAJ
description The purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead to cast iron scrapping. A series of trial melting batches were carried out for variable process assumptions. The analysis was performed to reflect, to the greatest extent possible, real foundry production conditions. Industrial tests were performed in Odlewnia Rafamet Sp. z o.o., Kuźnia Raciborska, Poland. The polystyrene patterns created by gluing components together, used in the tests, met the requirements of the high-tech lost-foam casting (LFC) process. The performed analysis allowed the obtaining of lustrous carbon defects in test castings as well as the determination of the process parameters with the highest impact on lustrous carbon inclusions in ductile iron castings. The test results were used to eliminate the possibility of creating a defect and thus directly improve the efficiency of the lost-foam casting (LFC) process used in the foundry.
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spelling doaj.art-31ea0dca84744e6e9420cc1d05a00c0c2023-11-20T08:30:21ZengMDPI AGMetals2075-47012020-07-01108102210.3390/met10081022The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) MethodJan Jezierski0Michał Jureczko1Rafał Dojka2Department of Foundry Engineering, Silesian University of Technology, 44-100 Gliwice, PolandDepartment of Foundry Engineering, Silesian University of Technology, 44-100 Gliwice, PolandDepartment of Foundry Engineering, Silesian University of Technology, 44-100 Gliwice, PolandThe purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead to cast iron scrapping. A series of trial melting batches were carried out for variable process assumptions. The analysis was performed to reflect, to the greatest extent possible, real foundry production conditions. Industrial tests were performed in Odlewnia Rafamet Sp. z o.o., Kuźnia Raciborska, Poland. The polystyrene patterns created by gluing components together, used in the tests, met the requirements of the high-tech lost-foam casting (LFC) process. The performed analysis allowed the obtaining of lustrous carbon defects in test castings as well as the determination of the process parameters with the highest impact on lustrous carbon inclusions in ductile iron castings. The test results were used to eliminate the possibility of creating a defect and thus directly improve the efficiency of the lost-foam casting (LFC) process used in the foundry.https://www.mdpi.com/2075-4701/10/8/1022lustrous carbonlost foam castingfull mold methodductile cast ironcasting defects
spellingShingle Jan Jezierski
Michał Jureczko
Rafał Dojka
The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
Metals
lustrous carbon
lost foam casting
full mold method
ductile cast iron
casting defects
title The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
title_full The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
title_fullStr The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
title_full_unstemmed The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
title_short The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
title_sort impact of process factors on creating defects mainly lustrous carbon during the production of ductile iron using the lost foam casting lfc method
topic lustrous carbon
lost foam casting
full mold method
ductile cast iron
casting defects
url https://www.mdpi.com/2075-4701/10/8/1022
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