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Gas porosity defect – what it means and how to respond

The foundries are facing problem-related to the selection of the parameter’s value for minimum rejection and maximum productivity. The furan no-bake binders system guaranteed dimensional stability and a comparative good surface finish of the casting. Based on past data in the industry, it is found t...

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Main Authors:	Sheladiyaa, Manojkumar V., Acharya, Shailee G., Acharya, Ghanshyam D.
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2023
Online Access:	http://journalarticle.ukm.my/21962/1/kjt_17.pdf http://journalarticle.ukm.my/21962/ https://www.ukm.my/jkukm/volume-3501-2023/
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id	my-ukm.journal.21962
record_format	eprints
spelling	my-ukm.journal.219622023-07-27T05:57:09Z http://journalarticle.ukm.my/21962/ Gas porosity defect – what it means and how to respond Sheladiyaa, Manojkumar V. Acharya, Shailee G. Acharya, Ghanshyam D. The foundries are facing problem-related to the selection of the parameter’s value for minimum rejection and maximum productivity. The furan no-bake binders system guaranteed dimensional stability and a comparative good surface finish of the casting. Based on past data in the industry, it is found that gas porosity defect is one of the highest. The phenomenon of the formation of the bubble in the fissures of the mould-metal interface, and later on trapping during the solidification leads to gas porosity. The current research work is focused on the minimization of the defect by the selection of the optimum range of input variables. Based on rigorous literature survey and industrial expert’s opinion, it is found that the parameters like grain fineness number (GFN) of the sand, loss on ignition (LoI) of the used sand, the sand temperature at the mixing time, potential of hydrogen (pH) are important parameters for gas porosity defect in the casting.Design-Expert software and particularly response surface methodology (RSM) and sequential approach using the face-centered central composite design is used for the experiments. The results show that a quadratic model with the removal of some insignificant term is a comparatively best fit for gas porosity defects. After analysis, various favorable levels of different parameters are obtained. The research work is based on realistic problems of the foundries and based on the experimental work. Thus, the provided solution is very much useful for foundries to reduce the rejection, particularly for furan no-bake with furfuryl alcohol as resin and sulphonic acid as catalyst. The research problem addressed in the paper is a genuine problem of the foundries and the sole work is based on experimental evidence. Penerbit Universiti Kebangsaan Malaysia 2023 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/21962/1/kjt_17.pdf Sheladiyaa, Manojkumar V. and Acharya, Shailee G. and Acharya, Ghanshyam D. (2023) Gas porosity defect – what it means and how to respond. Jurnal Kejuruteraan, 35 (1). pp. 179-190. ISSN 0128-0198 https://www.ukm.my/jkukm/volume-3501-2023/
institution	Universiti Kebangsaan Malaysia
building	Tun Sri Lanang Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Kebangsaan Malaysia
content_source	UKM Journal Article Repository
url_provider	http://journalarticle.ukm.my/
language	English
description	The foundries are facing problem-related to the selection of the parameter’s value for minimum rejection and maximum productivity. The furan no-bake binders system guaranteed dimensional stability and a comparative good surface finish of the casting. Based on past data in the industry, it is found that gas porosity defect is one of the highest. The phenomenon of the formation of the bubble in the fissures of the mould-metal interface, and later on trapping during the solidification leads to gas porosity. The current research work is focused on the minimization of the defect by the selection of the optimum range of input variables. Based on rigorous literature survey and industrial expert’s opinion, it is found that the parameters like grain fineness number (GFN) of the sand, loss on ignition (LoI) of the used sand, the sand temperature at the mixing time, potential of hydrogen (pH) are important parameters for gas porosity defect in the casting.Design-Expert software and particularly response surface methodology (RSM) and sequential approach using the face-centered central composite design is used for the experiments. The results show that a quadratic model with the removal of some insignificant term is a comparatively best fit for gas porosity defects. After analysis, various favorable levels of different parameters are obtained. The research work is based on realistic problems of the foundries and based on the experimental work. Thus, the provided solution is very much useful for foundries to reduce the rejection, particularly for furan no-bake with furfuryl alcohol as resin and sulphonic acid as catalyst. The research problem addressed in the paper is a genuine problem of the foundries and the sole work is based on experimental evidence.
format	Article
author	Sheladiyaa, Manojkumar V. Acharya, Shailee G. Acharya, Ghanshyam D.
spellingShingle	Sheladiyaa, Manojkumar V. Acharya, Shailee G. Acharya, Ghanshyam D. Gas porosity defect – what it means and how to respond
author_facet	Sheladiyaa, Manojkumar V. Acharya, Shailee G. Acharya, Ghanshyam D.
author_sort	Sheladiyaa, Manojkumar V.
title	Gas porosity defect – what it means and how to respond
title_short	Gas porosity defect – what it means and how to respond
title_full	Gas porosity defect – what it means and how to respond
title_fullStr	Gas porosity defect – what it means and how to respond
title_full_unstemmed	Gas porosity defect – what it means and how to respond
title_sort	gas porosity defect – what it means and how to respond
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2023
url	http://journalarticle.ukm.my/21962/1/kjt_17.pdf http://journalarticle.ukm.my/21962/ https://www.ukm.my/jkukm/volume-3501-2023/
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score	13.211869

Gas porosity defect – what it means and how to respond

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