Patent ID: 8410400
Filing Date: 2013-04-02
Classification: B23K

Abstract:
1. A method for welding a first work piece to a second work piece, the method comprising: placing the first work piece against the second work piece at a weld zone, said first work piece including a first metallic constraining layer, a second metallic constraining layer, and a polymeric layer disposed between and bonded to said first and second metallic constraining layers; feeding a consumable metal cored wire electrode to said weld zone through a welding gun; feeding a stream of shielding gas to said weld zone; forming at least one plug hole in one of the first and second work pieces at said weld zone; forming a weld joint at said weld zone including first melting said consumable metal cored wire electrode along a circumference of said at least one plug hole and thereafter progressively spiraling said welding gun inwards towards a center of said at least one plug hole substantially filling said at least one plug hole with said melted consumable metal cored wire electrode; and determining if said melting said consumable metal cored wire electrode is causing sputtering, and delaying said spiraling said welding gun inwards until said sputtering subsides while continuing to traverse the circumference of said at least one plug hole.