Title

COMPARISON BETWEEN TWO DEOXIDIZING AGENTS FOR LIQUID COPPER

COMPARISON BETWEEN TWO DEOXIDIZING AGENTS FOR LIQUID COPPER

Authorship

BATISTA, FELIPE DA SILVEIRA; MAIA, BRENO TOTTI; BRAGA, BERNARDO MARTINS; DUARTE, ALEXANDRE MOREIRA; MEIRELES, LEONEL MUNIZ; GONÇALVES, KARINA APARECIDA MARTINS BARCELOS; ARAUJO, KEYDIANE MICHELLE ALVARENGA; LUIZ, VALMIR DIAS

BATISTA, FELIPE DA SILVEIRA

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MAIA, BRENO TOTTI

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BRAGA, BERNARDO MARTINS

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DUARTE, ALEXANDRE MOREIRA

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MEIRELES, LEONEL MUNIZ

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GONÇALVES, KARINA APARECIDA MARTINS BARCELOS

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ARAUJO, KEYDIANE MICHELLE ALVARENGA

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LUIZ, VALMIR DIAS

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DOI

10.5151/2594-5300-41986

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Abstract

This article presents a comparative study on the effectiveness of two deoxidizing agents, phosphorous copper (CuP15) and graphite powder, in liquid copper casting. The main objective was to evaluate the influence of these agents on copper deoxidation. The methodology involved laboratory-scale copper melting, with the addition of deoxidizers at two previously calculated levels. After solidification, the test specimens were analyzed for their macrostructure, porosity level, and electrical conductivity. Other factors such as melting time and pouring temperature were also monitored and identified as potentially influential factors. Images of the results of the respective analyses were provided, containing chemically macro-etched samples for better visualization of the effects of the defined parameters on the sample structure, as well as its degree of porosity.

THIS ARTICLE PRESENTS A COMPARATIVE STUDY ON THE EFFECTIVENESS OF TWO DEOXIDIZING AGENTS, PHOSPHOROUS COPPER (CUP15) AND GRAPHITE POWDER, IN LIQUID COPPER CASTING. THE MAIN OBJECTIVE WAS TO EVALUATE THE INFLUENCE OF THESE AGENTS ON COPPER DEOXIDATION. THE METHODOLOGY INVOLVED LABORATORY-SCALE COPPER MELTING, WITH THE ADDITION OF DEOXIDIZERS AT TWO PREVIOUSLY CALCULATED LEVELS. AFTER SOLIDIFICATION, THE TEST SPECIMENS WERE ANALYZED FOR THEIR MACROSTRUCTURE, POROSITY LEVEL, AND ELECTRICAL CONDUCTIVITY. OTHER FACTORS SUCH AS MELTING TIME AND POURING TEMPERATURE WERE ALSO MONITORED AND IDENTIFIED AS POTENTIALLY INFLUENTIAL FACTORS. IMAGES OF THE RESULTS OF THE RESPECTIVE ANALYSES WERE PROVIDED, CONTAINING CHEMICALLY MACRO-ETCHED SAMPLES FOR BETTER VISUALIZATION OF THE EFFECTS OF THE DEFINED PARAMETERS ON THE SAMPLE STRUCTURE, AS WELL AS ITS DEGREE OF POROSITY.

Keywords

Copper, Casting, Oxygen, Deoxidant

Copper, Casting, Oxygen, Deoxidant