Technological Aspects of Minimization of the Sizes of a Continuous Casting-Rolling Unit in the Production of Wire Rods from Fire-Refined Copper

Смирнов, Е. Н.; Skliar, Vitalii; Gorozhankin, A. S.; Смирнов, А. Н.; Belevitin, V. A.; Orlov, G. A.

doi:10.1007/s11015-020-01027-3

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…Na Figura 3, pode-se observar a evolução anual no número de patentes e artigos publicados entre 1928 e 2021. O artigo com publicação mais recente é sobre aspectos tecnológicos da minimização dos tamanhos de uma unidade de laminação contínua na produção de fio-máquina de cobre refinado a fogo (SMIRNOV, et al, 2020). Dentre os depósitos, a patente chinesa CN 101314819A apresenta o vínculo mais forte com a pesquisa.…”

Section: Resultsunclassified

Prospectivo da Influência das Impurezas nas Propriedades do Cobre Refinado a Fogo (FRHC)

Costa

Lima

Brandim

2023

RFSA

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Cobre refinado a fogo (FRHC) possui diversas aplicações, principalmente na produção de fios e cabos elétricos; metal com alto teor de impurezas, especialmente de oxigênio, cuja elevada concentração de impurezas pode afetar as propriedades do material. Dentre as propriedades, sobressai a alta condutividade térmica e elétrica. Este artigo tem como objetivo realizar uma prospecção científica e tecnológica sobre a influência das impurezas nas propriedades do cobre, a fim de compreender os efeitos provocados durante os processos de fabricação de fios e cabos. A metodologia utilizada é uma revisão bibliométrica, tomando como bases científicas Web of Science e ScienceDirect is Elsevier's, para busca de artigos, e um mapeamento patentário na plataforma do EPO e Google Patents. Como resultados, 34 artigos e 13 patentes relacionadas, sendo perceptível nos últimos anos a falta de evolução e inovação de novos métodos e tecnologias de refino de cobre, principalmente voltados para a contenção de impurezas, com tendências China, Estados Unidos, Austrália, Polônia, Canadá, Reino Unido e Alemanha.Palavras-chave: Cobre (FRHC). Impurezas. Oxigênio. Propriedades.

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Section: Resultsunclassified

Prospectivo da Influência das Impurezas nas Propriedades do Cobre Refinado a Fogo (FRHC)

Costa

Lima

Brandim

2023

RFSA

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“…It is, in fact, a continuous casting process of copper strand directly subjected to the hot-rolling process. The strand is obtained via a mobile casting mould [1,2] and due to the symmetrical cooling of the strand surface a fast and uniform crystallization process of the liquid metal takes place. Uniform growth of nuclei in all directions during the crystallization process and the preferential directions of heat abstraction (the direction is perpendicular to the surface of the casting mould) form the dendritic structure of the strand.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Dendritic Structure Influence on the Electrical and Mechanical Properties Diversification of the Continuously Casted Copper Strand

et al. 2020

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The properties of copper in its solid state are strongly affected by the crystallization conditions of the liquid material. ETP grade copper (Electrolytic Tough Pitch Copper) contains oxygen, which causes Cu2O oxide to crystallize in the interdendritic spaces during solidification process which due to the shape of continuous casting mould and the feed of liquid copper during the crystallization process in strand casting might cause a high risk of macrosegregation of oxygen in the copper structure. In the current paper the implied interactions of the dendritic structure of the copper strand in terms of homogeneity at the cross-section of its electrical, mechanical and plastic properties determined based on the samples taken parallelly and perpendicularly to the surface of the dendritic boundaries were analysed. The obtained results were confronted with scanning electron microscopy (SEM) images of the fractures formed during uniaxial tensile test. It has been observed that when the crystallites were arranged perpendicularly to the tensile direction the yield strength (YS) was lower and the fractures were brittle. On the other hand, when the crystallites were arranged parallelly to the tensile direction the fractures were plastic and elongated necking was observed along with the higher YS and total elongation values. The differences in values vary in terms of the applied direction of the tensile force. A characteristic positioning of the Cu2O oxide particles inside the fracture depending on the crystallite alignment and the direction of the applied tensile force has been observed.

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Technological Aspects of Minimization of the Sizes of a Continuous Casting-Rolling Unit in the Production of Wire Rods from Fire-Refined Copper

Cited by 2 publications

References 10 publications

Prospectivo da Influência das Impurezas nas Propriedades do Cobre Refinado a Fogo (FRHC)

Prospectivo da Influência das Impurezas nas Propriedades do Cobre Refinado a Fogo (FRHC)

Investigation of the Dendritic Structure Influence on the Electrical and Mechanical Properties Diversification of the Continuously Casted Copper Strand

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