Patent ID: 6426483
Filing Date: 2002-07-30
Classification: B23K

Abstract:
A welding wire for use in electric arc welding comprising a length of a solid metal core having an outer perimeter, a plurality of indentations in a surface of said metal core defining indented core sections, and an electrically conductive metal sheath, said plurality of indented core sections being spaced apart from one another along a longitudinal length of said core, said spaced apart indented core sections defining non-indented core sections positioned between two of said indented core sections, a plurality of said indented core sections being spaced substantially equal distances from one another along the longitudinal length of said solid metal core, a plurality of said indentations only partially extending about the complete outer perimeter of said metal core, a plurality of said non-indented core sections having substantially a same volume, a plurality of said indented core sections having substantially a same volume, at least one of said indented core sections having a cross-sectional resistance that is greater than a resistance along the cross-section of at least one of said non-indented core sections, said metal sheath at least partially positioned about a plurality of said indented and said non-indented core sections, said metal sheath being spaced from at least a portion of a surface of a plurality of said indented core sections, said metal sheath at least partially contacting a plurality of said non-indented core sections.