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ID 32174
JaLCDOI
フルテキストURL
著者
Mori, Tadashige Okayama University
Matsuda, Akira Okayama University
Akashi, Shinji Okayama University
Ogata, Masana Okayama University
Takeoka, Kiyoshi Doshisha University
Yoshinaka, Masaru Doshisha University
抄録

In the present study, the fumes generated from manual metal arc (MMA) and submerged metal arc (SMA) welding of low temperature service steel, and the chromium and nickel percentages in these fumes, were measured at various horizontal distances and vertical heights from the arc in order to obtain a three dimensional distribution. The MMA welding fume concentrations were significantly higher than the SMA welding fume concentrations. The highest fume concentration on the horizontal was shown in the fumes collected directly above the arc. The fume concentration vertically was highest at 50 cm height and reduced by half at 150 cm height. The fume concentration at 250 cm height was scarcely different from that at 150 cm height. The distribution of the chromium concentration vertically was analogous to the fume concentration, and a statistically significant difference in the chromium percentages was not found at the different heights. The nickel concentrations were not statistically significant within the welding processes, but the nickel percentages in the SMA welding fumes were statistically higher than in the MMA welding fumes. The highest nickel concentration on the horizontal was found in the fumes collected directly above the arc. The highest nickel concentration vertically showed in the fume samples collected at 50 cm height, but the greater the height the larger the nickel percentage in the fumes.

キーワード
chromium and nickel alloy
manual are (MMA) welding
submerged metal arc (SMA) welding
three dimensional disribution
welding fume
Amo Type
Article
発行日
1991-08
出版物タイトル
Acta Medica Okayama
45巻
4号
出版者
Okayama University Medical School
開始ページ
233
終了ページ
240
ISSN
0386-300X
NCID
AA00508441
資料タイプ
学術雑誌論文
言語
English
論文のバージョン
publisher
査読
有り
PubMed ID
Web of Sience KeyUT