Aplicação da Oscilação Magnética Controlada ao Arco GMAW Seguindo Padrões de Lissajous Como Forma de Tecimento do Cordão para Promover Distribuição Orientada de Calor e Massa Durante o Processo de Soldagem

Juliani, Luciano; Bracarense, Alexandre Queiróz; Modenesi, Paulo José

doi:10.1590/0104-9224/si25.17

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Once the mesh to be used had been chosen, the physical models governing the problem in question and the initial and boundary conditions involved were applied. For this analysis, the thermal input to be used in the machine configuration was 1100 J/mm, the thermal source travel speed was set at 3 mm/s and the length of the deposited layer is 100 mm, as per Juliani [24]. Therefore, it takes approximately 33 seconds to complete the deposition of the material.…”

Section: Model Developedmentioning

confidence: 99%

CFD Analysis of a Conduction Cooling System Applied to Wire Arc Additive Manufacturing

Coelho,

Aquino,

Arias

et al. 2024

Preprint

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Wire Arc Additive Manufacturing (WAAM) is an emerging technology that makes it possible to manufacture parts economically and efficiently, especially for complex geometries. The manufacture of parts using the WAAM process is characterized by the use of thermal sources that apply heat fluxes during the deposition of layers. However, managing the heat generated during the deposition process is fundamental to guaranteeing part quality and avoiding defects. Controlling the thermal input tends to be favorable in terms of the mechanical properties of the manufactured component. A conduction cooling system is presented here, and an investigative study into the heat exchange performance of this solution was carried out under a number of boundary conditions, such as flow rate and coolant temperature. Conduction cooling systems are a promising solution for regulating temperatures in WAAM processes. This study performs a Computational Fluid Dynamics (CFD) analysis to evaluate the effectiveness of a conduction cooling system in mitigating thermal problems in WAAM. The use of the cooling base reduces the average temperature between the deposited layers, so that it is possible to increase the pass deposition rate and also productivity, as well as minimizing the overflow effect. To this end, a Computer Fluid Dynamics (CFD) simulation was developed, showing the efficiency of the process.

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Section: Model Developedmentioning

confidence: 99%

CFD Analysis of a Conduction Cooling System Applied to Wire Arc Additive Manufacturing

Coelho,

Aquino,

Arias

et al. 2024

Preprint

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The Influence of Magnetic Arc Oscillation on the Deposition Width Variation along the Length of Multi-layer Single-Pass Walls Produced by Wire Arc Additive Manufacturing Process

Corradi

Coelho

Antonello

et al. 2021

J. of Materi Eng and Perform

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In this work, a wall printer system was developed, and multi-layer single-pass walls of low carbon steel were produced by the Gas Tungsten Arc Welding-based Wire Arc Additive Manufacturing process with and without Magnetic Arc Oscillation. The influence of the longitudinal oscillating movement of the welding arc during the layer deposition process on the wall geometry was evaluated using cross-sectional macrographs from samples removed from the arc striking point, arc extinguishing point, and middle of the wall. The results show that the wall becomes thinner, and the width variation along the wall length decreases when Magnetic Arc Oscillation is applied. The weld penetration also becomes less deep. A physical model based on the arc force and the magnetic force that acts on the weld pool during layer deposition was proposed to explain the influence of Magnetic Arc oscillation on the width variation noted along the wall length. Because of the alternating movement of the welding arc, the plasma jet and molten metal flow change the direction continuously. As a result, the molten metal does not concentrate at the beginning or end of the deposition length, and the width variation problem is minimized.

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Aplicação da Oscilação Magnética Controlada ao Arco GMAW Seguindo Padrões de Lissajous Como Forma de Tecimento do Cordão para Promover Distribuição Orientada de Calor e Massa Durante o Processo de Soldagem

Cited by 2 publications

References 6 publications

CFD Analysis of a Conduction Cooling System Applied to Wire Arc Additive Manufacturing

CFD Analysis of a Conduction Cooling System Applied to Wire Arc Additive Manufacturing

The Influence of Magnetic Arc Oscillation on the Deposition Width Variation along the Length of Multi-layer Single-Pass Walls Produced by Wire Arc Additive Manufacturing Process

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