Effect of Cooling Intensity and Position on Solidification in Semi-Continuous Casting of Copper

Cooling heat flux effect in both primary and secondary cooling zone has been studied in semi-continuous casting of copper billet. Sufficient cooling is essential to reduce casting defects and to get high productivity, however low rate of solidification is aimed in order to get coarser grain size and softer metal for less losses in extrusion. A three-dimensional numerical model has been developed including solidification behavior of copper through mushy zone. At steady state and constant casting speed, solid shell thickness is monitored during the reduction of cooling rate at mould region to avoid breaking out. Heat flux intensity at mould plays important role not only in the formation of solid shell thickness. But, pool length and mushy zone thickness can be significantly increased by decreasing primary cooling intensity. Increase intensity of secondary cooling zone for two particular cases of primary cooling is tested. First case is tested at mould inlet water temperature of 38˚C, and second case at water temperature of 63˚C. Results showed that the combination of increasing secondary cooling intensity and reduction of primary cooling intensity can increase pool length and mushy zone thickness. Also, it is shown that, secondary cooling intensity can be magnified by up to 1.5 times for cooling water temperature of 63˚C to get pool length close to that of water temperature of 38˚C.

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Detaylı Görünüm
ISSN
(dc.identifier.issn)
2165-3860
Yayıncı
(dc.publisher)
Open Journal of Fluid Dynamics
Eser Adı
(dc.title)
Effect of Cooling Intensity and Position on Solidification in Semi-Continuous Casting of Copper
Özet
(dc.description.abstract)
Cooling heat flux effect in both primary and secondary cooling zone has been studied in semi-continuous casting of copper billet. Sufficient cooling is essential to reduce casting defects and to get high productivity, however low rate of solidification is aimed in order to get coarser grain size and softer metal for less losses in extrusion. A three-dimensional numerical model has been developed including solidification behavior of copper through mushy zone. At steady state and constant casting speed, solid shell thickness is monitored during the reduction of cooling rate at mould region to avoid breaking out. Heat flux intensity at mould plays important role not only in the formation of solid shell thickness. But, pool length and mushy zone thickness can be significantly increased by decreasing primary cooling intensity. Increase intensity of secondary cooling zone for two particular cases of primary cooling is tested. First case is tested at mould inlet water temperature of 38˚C, and second case at water temperature of 63˚C. Results showed that the combination of increasing secondary cooling intensity and reduction of primary cooling intensity can increase pool length and mushy zone thickness. Also, it is shown that, secondary cooling intensity can be magnified by up to 1.5 times for cooling water temperature of 63˚C to get pool length close to that of water temperature of 38˚C.
Yayın Tarihi
(dc.date.issued)
2016
Kayıt Giriş Tarihi
(dc.date.accessioned)
2019-07-11T07:42:13Z
Açık Erişim tarihi
(dc.date.available)
2019-07-11T07:42:13Z
Yayın Dili
(dc.language.iso)
eng
Konu Başlıkları
(dc.subject)
Semi-Continuous
Konu Başlıkları
(dc.subject)
Copper
Konu Başlıkları
(dc.subject)
Casting
Konu Başlıkları
(dc.subject)
Primary Cooling
Konu Başlıkları
(dc.subject)
Secondary Cooling
Yayın Türü
(dc.type)
Makale
Yazar/lar
(dc.contributor.author)
HAMEED, Amar Hasan
Yazar/lar
(dc.contributor.author)
MOHAMMED, Ahmed Abdullah
Yazar/lar
(dc.contributor.author)
FADHIL, Obaid
Tek Biçim Adres
(dc.identifier.uri)
https://hdl.handle.net/20.500.12498/1248
Atıf Dizini
(dc.source.database)
Wos
Atıf Dizini
(dc.source.database)
Scopus
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