Achieving Control of Coating Process in your Foundry

Achieving control of coating thickness in foundry moulds is needed in order to guarantee uniform properties of the mould but also to achieve control of drying time. Since drying time of water based coatings is heavily dependent on the amount of water present in the coating layer, a stable coating pr...

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Main Authors: Muoio G.L. Di, Tiedje N.S.
Format: Article
Language:English
Published: Polish Academy of Sciences 2015-12-01
Series:Archives of Foundry Engineering
Subjects:
Online Access:http://www.degruyter.com/view/j/afe.2015.15.issue-4/afe-2015-0089/afe-2015-0089.xml?format=INT
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author Muoio G.L. Di
Tiedje N.S.
author_facet Muoio G.L. Di
Tiedje N.S.
author_sort Muoio G.L. Di
collection DOAJ
description Achieving control of coating thickness in foundry moulds is needed in order to guarantee uniform properties of the mould but also to achieve control of drying time. Since drying time of water based coatings is heavily dependent on the amount of water present in the coating layer, a stable coating process is prerequisite for a stable drying process. In this study, we analyse the effect of different variables on the coating layer properties. We start by considering four critical variables identified in a previous study such as sand compaction, coating density, dipping time and gravity and then we add centre points to the original experimental plans to identify possible non-linear effects and variation in process stability. Finally, we investigate the relation between coating penetration (a variable that is relatively simple to measure in production) and other coating layer thickness properties (relevant for the drying process design). Correlations are found and equations are provided. In particular it is found that water thickness can be directly correlated to penetration with a simple linear equation and without the need to account for other variables.
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spelling doaj.art-fc84ad978fa441018a5f68921faec6972023-08-02T04:35:10ZengPolish Academy of SciencesArchives of Foundry Engineering2299-29442015-12-0115411011410.1515/afe-2015-0089afe-2015-0089Achieving Control of Coating Process in your FoundryMuoio G.L. Di0Tiedje N.S.1Castings Technology, Global Castings A/S, 373N Diplomvej, Lyngby, 2800, DenmarkMechanical Engineering, Technical University of Denmark, Building 427, room 306b, Kgs. Lyngby, 2800, DenmarkAchieving control of coating thickness in foundry moulds is needed in order to guarantee uniform properties of the mould but also to achieve control of drying time. Since drying time of water based coatings is heavily dependent on the amount of water present in the coating layer, a stable coating process is prerequisite for a stable drying process. In this study, we analyse the effect of different variables on the coating layer properties. We start by considering four critical variables identified in a previous study such as sand compaction, coating density, dipping time and gravity and then we add centre points to the original experimental plans to identify possible non-linear effects and variation in process stability. Finally, we investigate the relation between coating penetration (a variable that is relatively simple to measure in production) and other coating layer thickness properties (relevant for the drying process design). Correlations are found and equations are provided. In particular it is found that water thickness can be directly correlated to penetration with a simple linear equation and without the need to account for other variables.http://www.degruyter.com/view/j/afe.2015.15.issue-4/afe-2015-0089/afe-2015-0089.xml?format=INTInnovative moulding technologies and materialsQuality managementCoating process controlSand compactionCoating penetration
spellingShingle Muoio G.L. Di
Tiedje N.S.
Achieving Control of Coating Process in your Foundry
Archives of Foundry Engineering
Innovative moulding technologies and materials
Quality management
Coating process control
Sand compaction
Coating penetration
title Achieving Control of Coating Process in your Foundry
title_full Achieving Control of Coating Process in your Foundry
title_fullStr Achieving Control of Coating Process in your Foundry
title_full_unstemmed Achieving Control of Coating Process in your Foundry
title_short Achieving Control of Coating Process in your Foundry
title_sort achieving control of coating process in your foundry
topic Innovative moulding technologies and materials
Quality management
Coating process control
Sand compaction
Coating penetration
url http://www.degruyter.com/view/j/afe.2015.15.issue-4/afe-2015-0089/afe-2015-0089.xml?format=INT
work_keys_str_mv AT muoiogldi achievingcontrolofcoatingprocessinyourfoundry
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