IP Library › Granted Patent US 9,884,385
Granted Patent B2
US 9,884,385 · App. 13/916,676 · Granted Feb 6, 2018

Method and apparatus for welding

Inventors: Todd E. Holverson (Appleton, WI); James L. Uecker (Appleton, WI); Robert R. Davidson (New London, WI); Richard M. Hutchison (Iola, WI)
Assignee: Illinois Tool Works Inc.
B23K9/0008B23K9/067B23K9/073B23K9/09B23K9/095
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Quick Facts
Patent No.
US 9,884,385
App. No.
13/916,676
Granted
Feb 6, 2018
Kind
B2
Abstract

A method and apparatus for welding include initiating a pulse welding process includes initiating a welding arc by providing CC type welding power, maintaining the arc by providing CV type power. Then, pulse type welding power is provided. The method and system can be used to start short circuit, or other welding processes by providing short circuit power, or welding power of a given mode, instead of providing pulse power. Also, in one alternative, a method and system of initiating a pulse, short circuit, or given welding process includes initiating a welding arc by providing CC type welding power at least until a pseudo-equilibrium for the arc is established. Then, providing welding power in a pulse, short circuit, or the given mode.

Claims (1)

1. A method of repeatedly starting a pulse welding process for aluminum wire, wherein the wire passes through a contact tip, comprising: starting the process, establishing a pseudo-equilibrium arc with aluminum wire, and repeating at least 70,000 times without changing the contact tip.

Continuity (3)
Continuation 11286960 · Nov 23, 2005
Division 10404681 · Mar 31, 2003
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