ASME Boiler and Pressure Vessel Code specifies the half bead method for carbon steel or low alloy steel weld repairs in case post weld heat treatment (SR) is impractical. A study was made to identify the appropriate procedure for the half bead method applied to repairs for forged low alloy steel (JIS G3212 SFVV 2). As the most recommendable practice, the conclusion suggests that the upper portion of the 1st layer welded by 2.6 mm diameter electrodes is ground off leaving the remainder approximately 2.0--2.5 mm thick from the groove surface prior to the 2nd layer deposition. Parts repaired by the described half bead method were tested in terms of tension, bend, hardness, metallogrphy, V-notch Charpy impact, fracture toughness, fatigue crack initiation and fatigue crack growth rate. These various properties of the rapair parts are comparable to those of repairs with the conventional SR, and particularly the method is found to be significantly effective in avoiding the degradation in toughness of the heat affected zone.

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  • Corporate Authors:

    Ishikawajima-Harima Heavy Industries Co., Ltd.

    2-16, Toyosu 3 Chome, Koto-Ku
    Tokyo 135,   Japan 
  • Authors:
    • Higuchi, M
    • Sakamoto, H
    • Tanioka, S
  • Publication Date: 1980-4

Media Info

  • Features: References;
  • Pagination: p. 14-19
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00312331
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 27 1980 12:00AM