The report deals with the two ways in which a fillet weld can be made in the vertical position with manual electrodes. These are moving of the electrode from below and upwards as well as from above and downwards. Different sizes of the fusion zone of the parent metal are obtained depending on the method used. Test pieces with a fusion zone of varying size have been welded and undergone mechanical testing. The results show that variations in the depth of the fusion zone do not influence the static strength of the welded joint. The cooling-rate of the weld influences the hardness in the transformation zone of the welded joint. Rapid cooling leads to the risk of the formation of martensite. Fine-grained steel could be satisfactorily welded with both methods, even though in plates with contents of carbon and manganese, higher than those which are normal Swedish practice and above max limits according to Swedish Standards. No cracks were found even though a structure containing martensite was obtained. A cost comparison shows that the vertical downward welding method yielded the shallowest fusion zone but also could give a cost reduction of about 30 percent. The gross efficiency of an electrode is not affected by the method of welding. (Author)

  • Supplemental Notes:
    • Mechanical Engineering Series.
  • Corporate Authors:

    Royal Swedish Academy of Engineering Sciences

    Grev Turegaton 14, P.O. Box 5073
    S-102 42 Stockholm 5,   Sweden 
  • Authors:
    • Persson, Sven-Ake
  • Publication Date: 1970

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00016735
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: APS-ME-50
  • Files: TRIS
  • Created Date: Oct 29 1971 12:00AM