Patent ID: 9352410
Filing Date: 2016-05-31
CPC Classification: B23K

Claim Text:
1. A method of joining of metals, said method comprising: feeding a wire to a weld joint formed by said metals to be joined; transmitting a welding current waveform through a length of said wire, said welding current waveform comprising a first current waveform for performing a low heat transfer process and a second current waveform sequential to the first current waveform for performing a high heat transfer process; creating a molten puddle in said weld joint with said welding current waveform; performing said low heat transfer process on said wire for a predetermined low heat duration to transfer a first portion of said wire to said molten puddle; performing said high heat transfer process on said wire for a predetermined high heat duration to transfer a second portion of said wire to said molten puddle, wherein said low heat transfer process creates an arc that forms said molten puddle at a root of said weld joint, and wherein said high heat transfer process widens a plume of said arc such that said arc climbs sidewalls of said weld joint and said molten puddle follows said arc up said sidewalls to a top of said weld joint.