Influence of WAAM-CMT deposition parameters on wall geometry

Novelino, A.L.B.; G., C. Carvalho; Ziberov, Maksym

doi:10.1016/j.aime.2022.100105

Cited by 8 publications

(2 citation statements)

References 18 publications

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“…Karmuhilan et al [12] utilized an advanced approach, the artificial neural network (ANN) model, to analyze the correlation between geometry and process variables, including two types of shielding gases and one type of metal transfer mode (pulse spray). Novelino et al [13] focused on investigating the correlation between CMT deposition parameters and wall geometry. In the study, not only was the side wall geometry characterized, but the bead-on-plate weldment geometry was also evaluated.…”

Section: Introductionmentioning

confidence: 99%

Influence of Processes and Process Variables for WAAM – Geometry of Deposited Bead

Li,

Al-Hallis,

Al-Chafey

2024

Advances in Transdisciplinary Engineering

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Wire Arc Additive Manufacturing (WAAM) is developing rapidly in recent years due to its advantages, such as higher productivity, lower cost, acceptable quality, and the availability of advanced welding processes. Cold Metal Transfer (CMT), as the most well-known Gas Metal Arc Welding (GMAW) process, is widely used in WAAM. The uniqueness of CMT lies in minimizing the heat input of the process. However, there is a drawback to the lower heat input, impacting the quality of the geometry of the welding bead, sharp transitions at the weld toe, inclusions, etc., particularly for higher alloyed steel, e.g., tool steel. In this study, two processes were employed: CMT and Pulse Multi Control (PMC). Two types of shielding gases were used, namely 2% CO2 + 98% Ar and 20% CO2 + 80% Ar. Two levels of wire feed speed were selected: high and low levels. A full-fraction factorial experimental matrix was created, and bead-on-plate samples were produced with different GMAW processes, i.e., CMT and PMC. The geometry of the bead-on-plate, including penetration, bead width and height, and toe angle, was evaluated and analyzed. A correlation between the process factors (shielding gas, type of process, and wire feed speed) and the geometry of the bead was analyzed and determined. A protocol is proposed based on the study results for the selection of WAAM processes.

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Section: Introductionmentioning

confidence: 99%

Influence of Processes and Process Variables for WAAM – Geometry of Deposited Bead

Li,

Al-Hallis,

Al-Chafey

2024

Advances in Transdisciplinary Engineering

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“…Based on the knowledge of the behaviour of single-pass welds and planar multi-pass deposition welds, efforts have been made to control the resulting layer height by precisely controlling the arc welding boundary conditions such as contact tip distance and different arc welding process variants [17,18]. Mainly the cold metal transfer Arc modification, a gas metal arc welding process variant with retractable wire electrode, was used due to the reduced heat input into the part [19,20].…”

Section: Introductionmentioning

confidence: 99%

A‐prori layer height determination for wire arc additive manufacturing based on weld geometry

Mäde,

Kellerwessel,

Sharma

et al. 2024

Materialwissenschaft Werkst

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The application of wire arc additive manufacturing (WAAM) for the production of large size components is currently limited, due to strong distortion and unprecise filling behavior. The resulting geometric and metallurgical irregularities pose a challenge to the process. The current approach of a layered structure cannot be adopted without adjustments when using wire arc additive manufacturing. Reasons include incompleteness, material accumulation and deformation. The combination of experimental weld geometry‐determination and its numerical estimation is presented here as solution to this challenge. The procedure is based on the measurement of a weld bead cross‐section‐area. By convolution of a path matrix with a weld‐geometry‐function, the planned path is filled with the seam geometry. Subsequent summation of multiple matrices results in a height profile showing discontinuities and accumulations. Further validation tests show a good agreement between the method and experimentally determined problem areas. The presented optimisation procedure can be extended with material parameters. A local compensation for deformation can be achieved.

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An angle-driven parameter control model for corner paths in the DED-arc process of nickel aluminum bronze alloy

Huang,

Li,

Shen

et al. 2024

Int J Adv Manuf Technol

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Influence of WAAM-CMT deposition parameters on wall geometry

Cited by 8 publications

References 18 publications

Influence of Processes and Process Variables for WAAM – Geometry of Deposited Bead

Influence of Processes and Process Variables for WAAM – Geometry of Deposited Bead

A‐prori layer height determination for wire arc additive manufacturing based on weld geometry

An angle-driven parameter control model for corner paths in the DED-arc process of nickel aluminum bronze alloy

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