Dynamic Behavior of Metal Vapor in Arc Plasma during TIG Welding

Tanaka, Manabu; Tashiro, Shinichi; Tsujimura, Yoshihiro

Transactions of JWRI, 2012, 41(1), 1-6

Number of Access:554（2025-08-16 04:13 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/23159

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Title
Dynamic Behavior of Metal Vapor in Arc Plasma during TIG Welding
Creator
NRID
1000020243272 1000020243272
researchmap permalink
read0014392 read0014392
Scopus Author ID
25641191700 25641191700
CreatorName
Tanaka, Manabu
NRID
1000070432424 1000070432424
researchmap permalink
d8dshw3z d8dshw3z
Scopus Author ID
15833130200 15833130200
CreatorName
Tashiro, Shinichi
CreatorName
Tsujimura, Yoshihiro
Subject
Arc
Plasma
Metal vapor
Spectroscopic analysis
TIG
Welding
Abstract
In the present paper, the mechanism of metal vapor in arc plasma is discussed through the dynamic observation of spectra of helium, chromium, manganese and iron during stationary TIG welding of stainless steel. Wavelengths from 400 nm to 700 nm are observed by a monochromator with a diffraction grating. Radiation from the arc is sent to the nomochromator through optical lens and spectroscopic images are captured with 500 fps by a high-speed digital video-camera. Spectra of metal elements exist locally in the arc plasma due to dependence of plasma temperature and also intensive region of each metal spectrum depends on kinds of metal elements. The most part of metal vapor produced from the weld pool surface are carried on the cathode jet and then are swept away towards surroundings of the arc. However, if the driving force like diffusion in plasma is large, some metal elements can get across the cathode jet and then can be carried on the circulation flow towards tungsten electrode.
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)
41(1)
Page
1-6
Date of Issued
2012-06
Language
English
Handle URL
https://hdl.handle.net/11094/23159
DOI
https://doi.org/10.18910/23159
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.41 No.1 (2012-06)