Patents Assigned to Commonwelth Edison
  • Welding method for rotatable shafts
    Patent number: 5348212
    Abstract: An improved welding method is provided for repairing broken rotors. The welding method preferably employs a 2.25Cr-1.0Mo-0.3V-type filler metal, preferably deposited using a narrow groove welding technique. The broken pieces are aligned end to end. A narrow groove is formed to substantially remove the end surfaces. The groove is preheated, filled with the welding filler metal, and postheated, resulting in a strong, high temperature resistant, long lasting weld.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: September 20, 1994
    Assignee: Commonwelth Edison
    Inventor: George W. Galanes