JOURNAL OF THE JAPAN WELDING SOCIETY
Online ISSN : 1883-7204
Print ISSN : 0021-4787
ISSN-L : 0021-4787
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Volume 15, Issue 9
Displaying 1-2 of 2 articles from this issue
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  • On the Occurrence of "Under-Cut"
    Yumao Ohnishi, Yoneo Kikuta
    1946 Volume 15 Issue 9 Pages 103-107
    Published: 1946
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.15.9_103
    JOURNAL FREE ACCESS
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    Under-cut which occurs occasionally in the metallic arc welding is unaccountable phenomenon. We attend to trace the Under-cut to its origin and to describe necessary conditions to promote this occurrence.
    As the result of the experiment mechanism of under-cut was illustrated. We can say that it is the natural consequence of the arc welding and conditions to promete the occurrence of it 'are as follow :
    higher current dencity,
    higher welding speed,
    Sigher temperature of mother metal, lower melting point of mother metal, rust of the metal used, to use characteristic coated electrode such as coating material of higher arc voltage, bad fluidity of metal, unsuitable fluidity and freezing point of slag. And finally, improper manipulation of welder.
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  • [title in Japanese]
    [in Japanese]
    1946 Volume 15 Issue 9 Pages 107-111
    Published: 1946
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.15.9_107
    JOURNAL FREE ACCESS
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