Modeling of Fume Formation Process in Arc Welding

Tashiro, Shinichi; Tanaka, Manabu

Transactions of JWRI, 2011, 40(2), 21-27

Number of Access:264（2025-06-06 18:43 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/5034

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Title
Modeling of Fume Formation Process in Arc Welding
Creator
NRID
1000070432424 1000070432424
researchmap permalink
d8dshw3z d8dshw3z
Scopus Author ID
15833130200 15833130200
CreatorName
Tashiro, Shinichi
NRID
1000020243272 1000020243272
researchmap permalink
read0014392 read0014392
Scopus Author ID
25641191700 25641191700
CreatorName
Tanaka, Manabu
Subject
Simulation
Arc
Fume
Abstract
In order to clarify fume formation mechanism in arc welding, quantitative investigation based on understanding of interaction among the electrode, arc and weld pool is indispensable. A fume formation model consisting of heterogeneous condensation model, homogeneous nucleation model and coagulation model has been developed and coupled with the GMA welding model. A series of processes from evaporation of metal vapor to fume formation from the metal vapor was totally investigated by employing this simulation model. This paper aims to visualize the fume formation process and clarify the fume formation mechanism theoretically through numerical analysis. Furthermore, the reliability of the simulation model was also evaluated through comparison of the simulation result with experimental result. As a result, it was found that most part of the fume was produced in downstream region of the arc originating from the metal vapor evaporated mainly from the droplet in argon GMA welding. This kind of the fume was constituted of particles with size of several tens nm. On the other hand, if the metal transfer becomes unstable and the metal vapor near the droplet diffuses directly toward the surroundings of the arc not getting on the plasma flow, the size of particles reaches several hundreds nm.
Publisher
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
Source Title
Transactions of JWRI
Volume (Issue)
40(2)
Page
21-27
Date of Issued
2011-12
Language
English
Handle URL
https://hdl.handle.net/11094/5034
DOI
https://doi.org/10.18910/5034
PISSN
03874508
NCID
AA00867058
Access Rights
open access
oaire:version
Version of Record
Category
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.40 No.2 (2011-12)