Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/article/doi/10.4322/tmm.2013.017
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original

DESENVOLVIMENTO POR SIMULAÇÃO COMPUTACIONAL E ANÁLISE DO DESEMPENHO REAL DE UMA MATRIZ PARA EXTRUSÃO EM CANAL ANGULAR

DEVELOPMENT BY COMPUTATIONAL SIMULATION AND PERFORMANCE ANALYSIS OF AN EQUAL CHANNEL ANGULAR PRESSING DIE

Springer, Phillip; Rubert, José Benaque; Sordi, Vitor Luiz; Ferrante, Maurizio

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Resumo

Os parâmetros geométricos críticos de uma matriz de Extrusão em Canal Angular (ECA) foram otimizados empregando o software Deform. Em base ao resultados da simulação foi construída uma matriz ECA, dedicada ao processamento de placas de Al AA1050 com 7 mm de espessura. Do software foram obtidas as forças de prensagem e a distribuição da deformação equivalente na placa, após um e quatro passes. Essas forças simuladas foram comparadas com as reais, obtidas das curvas força versus deslocamento do punção, enquanto a distribuição da deformação equivalente foi validada por medidas de indentação Vickers. Ensaios de tração e a observação microestrutural das placas processadas mostram que o desempenho da matriz é amplamente satisfatório.

Palavras-chave

Método de elementos finitos, Extrusão angular em canais, Deformação

Abstract

Critical geometric parameters of an Equal Channel Angular Pressing (ECAP) die suitable to plate processing were optimized by making use of the DEFORM™ software. Following the simulation a die was manufactured and employed in the processing of 7 mm thick Al AA 1050 plates. Software output included the pressing forces and the equivalent deformation distribution within the plates, after one and four ECAP passes. Calculated pressing forces against the punch displacement were compared with the actual forces, whilst the deformation distribution is validated by Vickers microhardness measurements. From tensile tests and microstructural observation of the processed plates the die performance was found quite satisfactory

Keywords

Finite elements method, Equal channel angular pressing die, Deformation

Referências



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