AN INVESTIGATION OF VARIOUS WELDING TECHNIQUES FOR BUILDING UP BATTERED RAIL ENDS

The building up of battered rail ends by means of different welding procedures and the evaluation of welding rods and electrodes used in these procedures is of considerable importance to the railroads. An investigation on this subject using 12 in. stroke rolling load machines at the Technical Center of the Association of American Railroads has been carried on under the general direction of G.M. Magee, director of engineering research, by Kurt Kannowski, metallurgical engineer. A definite program was outlined and followed in this investigation. The data in this investigation indicate that, in spite of variations in rods and welding procedures, the oxyacetylene welding method performs well in building up battered rail ends. The occurrence of the porosity near the interface of the weld and rail metal as well as the sharp demarcation line between the rail and weld metal have caused the failures of the electric arc welds rather than the practice of not pre or post heating. The failures of electric arc welds are often caused by a variable that was not given consideration in this investigation. These welds are subject to the human element variations that may be expected due to the welder depositing the metal. This effect on the quality of the weld is gradually being eliminated by improvements in the automatic feed and wire electrode welding process. Welds produced by this method are now under the rolling load test as well as in an extensive service test on the New York Central System. Results from both show considerable promise.

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: 3 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00097253
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Report/Paper Numbers: ER-32
  • Files: TRIS
  • Created Date: Jul 29 1976 12:00AM