JOURNAL OF THE JAPAN WELDING SOCIETY
Online ISSN : 1883-7204
Print ISSN : 0021-4787
ISSN-L : 0021-4787
Volume 31, Issue 9
Displaying 1-7 of 7 articles from this issue
  • Michio Inagaki
    1962 Volume 31 Issue 9 Pages 724-734
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
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  • What should We study from Them?
    Haruyoshi Suzuki
    1962 Volume 31 Issue 9 Pages 735-742
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
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  • Isao Masumoto
    1962 Volume 31 Issue 9 Pages 743-750
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
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  • Minoru Okada, Yoshikazu Moriwaki
    1962 Volume 31 Issue 9 Pages 751-756
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
    It is important to know the shear stress distribution at the transverse section of fillet weld, connecting the web and flange plates of welded beam under repeated bending load, in order to clearly understand, its shear fatigue strength. This problem is not yet solved, even approximately.
    In this paper, at first, an approximate solution of such problem is studied and then, by using its result, value of ξ0 in weld joint of such beam subjected to shear fatigue stress in sought.
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  • Masaki Watanabe, Yutaro Uratsu, Shinichi Ishizuka, Minoyuki Isozaki
    1962 Volume 31 Issue 9 Pages 757-766
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
    Tihs reports describes: three characteristics of mitre flash welding, The various conditions which effect on strength in the process of the mitre flash welding, the corrosion susceptibility of the weld area, and the dynamic strength of 63S aluminum alloy window sash.
    Three properties of mitre frash welding on the above alloy sash have been introduced.
    1. Temperature is variable according to the position although it is same distance from flashing face.
    2. Non-weldable part occurs by upset.
    3. Some shunting occurs around frame when the fourth conrer of a sash frame in welding.
    The results of this investgation indicated that important conditions in the mitre flesh weldihg require the shorter upset distance, greater flashing velocity and shorter flashing distance than in the process of straight welding.
    The results of corrosion tests indicated that flash welding specimens are less attacked than in-vert gas welding,
    The results of two dynamic tests on welded window sash indicated that dynamic strength of sash is influenced by non-weldable, portions, but enough strength was assured for general use.
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  • Effect of Deoxidizing Reaction in Deposited Metal of Automatic Arc Welding
    Otomaro Takagi, Shigeru Nishi, Kazuhisa Suzuki
    1962 Volume 31 Issue 9 Pages 767-774
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
    Notch-toughness of deposited metal in automatic arc welding is lower thae basn metal and its welded joint is extremely dangerous againt brittle fracture.
    The problem of notch-toughness of deposited metal in automatic arc welding is taken seriously with the magnification of application of automatic arc welding and high notch toughness of base metal:
    In this report, as factor on notch-toughness of deposited metal in automatic arc welding were considered as regards to deoxidizing reaction of deposited metal in usual submerged and CO2 gas arc welding, and effect of oxygen and oxidizing inclusion contented in deposited metal was very important.
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  • Deoxidation in Welding
    Yutaka Kasamatsu
    1962 Volume 31 Issue 9 Pages 775-781
    Published: September 25, 1962
    Released on J-STAGE: August 05, 2011
    JOURNAL FREE ACCESS
    A physico-chemical study has been made on the deoxidation in welding using the data described in the Report 1-Report 4, and the following results are obtained.
    As the weld slags are not generally saturated with a deoxidation product, the oxygen content in weld metals is affected by not only the composition of the metals, but also the composition of the slags. Thus the following equation was obtained for the oxygen in the metals:
    log[%O]=A/n⋅BL-m/n⋅log [%M]+1/n⋅log (%MmOn)-1/n (C-nD)
    where, [%O]: the oxygen content in the weld metals
    [%M]: the content of an alloying element in the weld metals
    (% MmOn): the content of the deoxidation product in the weld slags
    A⋅BL+C: the logarithm of an equilibrium index represented by (%MmOn)/[%M]m⋅(%FeO)n
    D: the logarithm of an equilibrium index represented by [%O]/(%FeO)
    The deoxidation powers of alloying elements on the same condition of slags decrease in the following order: Al, Ti, Si, Mn, V, Cr, W, Mo and Ni.
    The deoxidation with silicon is appoximately reached to the equilibrium state, but that with manganese is not so. The oxygen content therefore should be discussed by rather silicon than manganese.
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