SIMULAÇÃO NUMÉRICA DAS TENSÕES RESIDUAIS GERADAS NO PROCESSO DE TREFILAÇÃO PARA DIFERENTES PARÂMETROS DE PROCESSO

The drawing process of steel bars is usually used to check better dimensional accuracy and mechanical properties to the material. In the other hand, the major concern found in manufacturing axes through this process is the appearance of distortion of shape. Such distortions are directly linked to th...

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Bibliographic Details
Published in:Tecnologia em metalurgia, materiais e mineração materiais e mineração, 2014-01, Vol.11 (1), p.34
Main Authors: Zottis, Juliana, Soares, Carla Adriana T, Pavlak, Rafael Paini, Souza, Vinicius Waechter Dias, Rocha, Alexandre da Silva
Format: Article
Language:Portuguese
Subjects:
Axes (reference lines)
Bars
Computer simulation
Deformation mechanisms
Distortion
Fatigue life
Finite element method
Homogeneity
Lubrication
Mechanical properties
Process parameters
Residual stress
Steels
Stress analysis
Wire
Wire drawing
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Summary:The drawing process of steel bars is usually used to check better dimensional accuracy and mechanical properties to the material. In the other hand, the major concern found in manufacturing axes through this process is the appearance of distortion of shape. Such distortions are directly linked to the accumulation of residual stresses generated during the processes. As a result, this paper aims to study the influence of process parameters such as shape of puller, speed and lubrication used in wire drawing analyzing the accumulation of residual stress after the process. The stress analysis was performed by FEM being used two simulation software: Simufact.formingGP and DeformTM. Through these analyzes, it was found that the shape of how the bar is pulled causes a reduction of up to 100 MPa in residual stresses in the center of the bar, which represents an important factor in the study of the possible causes of the distortion. As well as factors speed and homogeneity of lubrication significantly altered the profile of residual stresses in the bar.
ISSN:2176-1515
2176-1523
DOI:10.4322/tmm.2014.004