Influence of Heat Input on Formation of Layers in WAAM

Authors

  • Manahil Tongov Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Bulgarian Academy of Sciences
  • Vladimir Petkov Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Bulgarian Academy of Sciences
  • Plamen Tashev Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Bulgarian Academy of Sciences

DOI:

https://doi.org/10.7546/CRABS.2024.11.07

Keywords:

WAAM, heat input, geometric dimensions

Abstract

Experiments are carried out on WAAM using solid wire grade G3Si1 as additive material. The layers are deposited with single beads. Metallographic macro sections are made from the obtained samples and are used to determine the geometric dimensions of the layers, i.e. width, height and lateral waviness. The correlation coefficients between the heat input and the geometrical dimensions of the obtained layers are determined and their significance is proved according to the student’s distribution. Based on the correlation coefficients, the coefficients of determination are calculated. It is proved that over 90% of the changes in the layer's width and over 76% of the changes in the layer's height are due to changes in the heat input. The analysis of the obtained results shows that the heat input is determining for the geometric dimensions of the layers and the lateral waviness can be decreased by increasing the travel speed.

Author Biographies

Manahil Tongov, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies
with Hydro- and Aerodynamics Centre "Acad. A. Balevski",
Bulgarian Academy of Sciences,
67 Shipchenski prohod Blvd, 1574 Sofia, Bulgaria

E-mail: tongov.tu@gmail.com

Vladimir Petkov, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies
with Hydro- and Aerodynamics Centre "Acad. A. Balevski",
Bulgarian Academy of Sciences,
67 Shipchenski prohod Blvd, 1574 Sofia, Bulgaria

E-mail: vladimir2pe@yahoo.com

Plamen Tashev, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies
with Hydro- and Aerodynamics Centre "Acad. A. Balevski",
Bulgarian Academy of Sciences,
67 Shipchenski prohod Blvd, 1574 Sofia, Bulgaria

E-mail: ptashev@ims.bas.bg

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Published

30-11-2024

How to Cite

[1]
M. Tongov, V. Petkov, and P. Tashev, “Influence of Heat Input on Formation of Layers in WAAM”, C. R. Acad. Bulg. Sci., vol. 77, no. 11, pp. 1639–1645, Nov. 2024.

Issue

Section

Engineering Sciences