JOURNAL OF THE JAPAN WELDING SOCIETY
Online ISSN : 1883-7204
Print ISSN : 0021-4787
ISSN-L : 0021-4787
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Volume 22, Issue 3
Displaying 1-5 of 5 articles from this issue
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  • Study on the Relation Between X-Ray Photograph and the Strength of the Welded Joint (Report 1)
    S. Taume, K. Takemi
    1953 Volume 22 Issue 3 Pages 72-77
    Published: 1953
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.22.72
    JOURNAL FREE ACCESS
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    The writers treated of the relation between X-ray photograph and the strength of blow holes in the welded joint of mild steel.
    The contents are arranged in the following order ;
    1.preface
    2.testing methods
    3.mechanical properties of test-pieces
    4.Study of X-ray photographs
    5.conclusion
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  • On the Specific Deposited Heat of Welding Arc of Mild Steel
    K. Ando, I. Miki
    1953 Volume 22 Issue 3 Pages 78-83
    Published: 1953
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.22.78
    JOURNAL FREE ACCESS
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    The specific deposited heat or the specific Let transfer number, i e. the ratio of heat atsorbed by the base metal to the weight of deposited metal is measured for various kinds of electrodes, the core diameter being 4 mm The value varies from 12 to 25 Ka' per gram for ordinary arc length.
    The value is independent of the current employed but increases as the arc length increases, because the melting speed of electrod metal is proportional to the current while the thermal efficiency is independent of the current, and the total heat input increases as the arc length increases (3), (4)
    It will be higher for those electrodes and polarity which have lower melting speeds.
    Fig. 3, 4 shov those relations.
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  • Weldability of Chromium Stainless Steel Plates (Report II)
    S. Ando
    1953 Volume 22 Issue 3 Pages 83-89
    Published: 1953
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.22.83
    JOURNAL FREE ACCESS
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    The weld zone of thin 13 Cr stainless steel plates (2.3-4mm) with an ordinary amount of C content, i, e., about 0.12% has been tested for the effect of heat treatment with the following results :
    1) In the welding of. 13 Cr stainless steel with electrode of similar type, a substantial improvement on the ductility of weld zone can be obtained by post heating at about 700°C for an extremely short duration after full development of Ar" transformation.
    If, in-this case, post heating is done at about 700°C before Ar" transformation point is reached, then there will be hardly any appreciable effect of this brief heat treatment.
    2) Even in the case of welding with Austenite electrodes, the above described procedure will be effective, except that unstable Austenite electrodes which are liable to produce bead cracks in longitudinal bead bendiag test without heat treatment are less effective than stable ones.
    3) It seems difficult to obtain sufficient ductility of weld zone through pre-heating alone.
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  • [title in Japanese]
    [in Japanese]
    1953 Volume 22 Issue 3 Pages 89-97
    Published: 1953
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.22.89
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1953 Volume 22 Issue 3 Pages 101-102
    Published: 1953
    Released on J-STAGE: June 12, 2009
    DOIhttps://doi.org/10.2207/qjjws1943.22.101
    JOURNAL FREE ACCESS
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