Effect of Substrate Orientation on Melt Pool during Multi-Layer Deposition in V-Groove with Gas Metal Arc
Paper i proceeding, 2021

Thermo-fluid dynamic and experimental approaches are used to investigate the influence of 20° uphill, downhill and sideway substrate orientation during metal deposition over a previously deposited bead in a V-groove. The computational fluid dynamic model with free surface deformation and metal transfer gives insight into the melt pool flow and causes of defect formation observed on the solidified beads. The experimental metallographs, high-speed images and computational results show good agreement. It is found that the deposition of a second layer on a smooth first layer cooled down to room temperature leads to large changes in melt pool flow pattern at 20° substrate inclination compared to flat condition. It results in undercut and humps with the uphill orientation and undercut with the side inclination. Therefore, lower angle range is necessary for multilayer gas metal arc deposition for these two last configurations.

reinforced bead

V-groove

substrate orientation

hump

gas metal arc welding

OpenFOAM

melt flow

metal deposition

Författare

Pradip Aryal

Högskolan Väst

Kjell Hurtig

Högskolan Väst

Fredrik Sikström

Högskolan Väst

Håkan Nilsson

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Isabelle Choquet

Högskolan Väst

Proceedings of 7th World Congress on Mechanical, Chemical, and Material Engineering (MCM'21)

HTFF 130

7th World Congress on Mechanical, Chemical, and Material Engineering (MCM'21)
Prague (virtual), Czech Republic,

Drivkrafter

Hållbar utveckling

Styrkeområden

Produktion

Energi

Ämneskategorier

Bearbetnings-, yt- och fogningsteknik

Annan materialteknik

Strömningsmekanik och akustik

Fundament

Grundläggande vetenskaper

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.11159/htff21.130

Mer information

Skapat

2021-10-14