Experimental and numerical investigation of a gouging heat source model and gouging/welding residual stress and deformation
Artikel i vetenskaplig tidskrift, 2024

Gouging is generally used for groove preparation of multi-pass welding and repair welding. Arc gouging is one of the most efficient gouging methods which utilizes an arc heat source and a trailing air blower. To date, the heat effects from the arc gouging are not clear especially when it is coupled with subsequent welding. In this study, a new heat source model considering the blown molten metal as well as the increased heat transfer by the blowing air was proposed. A 3D finite element model for gouging and welding was employed to analyze the thermal behavior, welding distortion and residual stresses. The transient temperature predicted by the proposed heat source model has good agreement with thermocouple measurements, both featuring multiple peaks in the thermal profile. The predicted distortion and residual stress due to gouging show similar trends as those in experiment. The proposed analysis approach can provide necessary insights, with high accuracy, in the evaluation of welding distortion and residual stresses in practical manufacturing.

Residual stresses

Welding distortion

Arc gouging

Process model

Heat source

Författare

Hui Huang

Soochow University

Ninshu Ma

Joining and Welding Research Institute

Sherif Rashed

Joining and Welding Research Institute

Kunio Narasaki

Joining and Welding Research Institute

Kazuma Kado

Joining and Welding Research Institute

Yasuo Agano

FaB-Tec Japan Corporation

Nobuya Tanaka

FaB-Tec Japan Corporation

Wengang Mao

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Journal of Manufacturing Processes

1526-6125 (ISSN)

Vol. 110 101-113

Ämneskategorier

Bearbetnings-, yt- och fogningsteknik

Geologi

DOI

10.1016/j.jmapro.2023.12.056

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Senast uppdaterat

2024-01-19