Welding electrode with radial-serrated weld face and method of forming and reforming weld face

A system for forming a weld face of a welding electrode, comprising:

• a dressing tool being rotatable about an axis and having a blade configured to overlie the weld face of the electrode;
• and
• an apparatus coupled with the dressing tool and configured to apply a pulsing force in a rotary direction about the axis to the dressing tool and configured to apply an axial force against the dressing tool to cause the blade to engage and form serrates on the weld face, wherein the serrates are each comprised of a pair of walls each being planar and each extending from a center to a circumferential outer edge of the weld face in the radial direction and extending between a valley and a peak in the axial direction, wherein each of the walls shares one of the valleys with another of the walls and shares one of the peaks with another of the walls, and wherein at least one of the walls of each of the serrates widens circumferentially as the at least one of the walls extends from the center of the weld face to the circumferential outer edge of the weld face.

A method for forming or reforming a radial-serrated shape in a weld face of a welding electrode, the welding electrode extending about and along an axis and terminating axially at the weld face, the method comprising:

• rotating a dressing tool about the axis a plurality of times in a pulsing manner to cause the dressing tool to rotate relative to the welding electrode;
• and
• pressing the dressing tool axially against the weld face of the welding electrode a plurality of times in a pulsing manner between each of the rotational pulses to drive the dressing tool against the weld face to form serrates on the weld face, wherein the serrates are each comprised of a peak projecting axially between two valleys, the peaks of the serrates each extending linearly in a radial direction toward the outer edge of the weld face, and wherein a circumferential width between the valleys of each of the serrates widens as the serrates extend radially outwardly.