John W Schaeffer

US Patent:

20190099822, Apr 4, 2019

Filed:

Oct 1, 2018

Appl. No.:

16/148936

Inventors:

- Santa Fa Springs CA, US
John Benjamin Schaeffer - Rocky River OH, US
Badri K. Narayanan - Highland Heights OH, US
Michael A. Kottman - Cleveland OH, US

International Classification:

B23K 9/04
B23K 9/10
B23K 26/342
B23K 26/348
B23K 9/173
B23K 10/02

Abstract:

The disclosed technology generally relates to consumable electrode wires and more particularly to consumable electrode wires having a core-shell structure, where the core comprises aluminum. In one aspect, a welding wire comprises a sheath having a steel composition and a core surrounded by the sheath. The core comprises aluminum (Al) at a concentration between about 3 weight % and about 20 weight % on the basis of the total weight of the welding wire, where Al is in an elemental form or is alloyed with a different metal element. The disclosed technology also relates to welding methods and systems adapted for using the aluminum-comprising electrode wires.

US Patent:

20190099844, Apr 4, 2019

Filed:

Sep 29, 2017

Appl. No.:

15/720895

Inventors:

- Santa Fe Springs CA, US
John Benjamin Schaeffer - Rocky River OH, US
Badri K. Narayanan - Highland Heights OH, US

International Classification:

B23K 35/30
B23K 35/02
B23K 9/23

Abstract:

The disclosed technology generally relates to consumable electrode wires and more particularly to consumable electrode wires having a core-shell structure, where the core comprises aluminum. In one aspect, a welding wire comprises a sheath having a steel composition and a core surrounded by the sheath. The core comprises aluminum (Al) at a concentration between about 3 weight % and about 20 weight % on the basis of the total weight of the welding wire, where Al is in an elemental form or is alloyed with a different metal element. The disclosed technology also relates to welding methods and systems adapted for using the aluminum-comprising electrode wires.

US Patent:

20180281094, Oct 4, 2018

Filed:

Mar 30, 2017

Appl. No.:

15/474411

Inventors:

- Santa Fe Springs CA, US
John Benjamin Schaeffer - Rocky River OH, US
David A. Fink - University Heights OH, US

International Classification:

B23K 9/02
B23K 9/095
B23K 9/127

Abstract:

An arc welder produces a weave pattern between workpieces. Each weld run comprises a center portion including a joining region between the workpieces and edge regions spaced apart from the joining region. The welder includes a power source that provides a welding waveform to a welding electrode to generate an arc to achieve a desired heat for welding, a welding torch, and an oscillator for oscillating the torch between the welding edge regions. A controller causes the power source to operate in a first mode utilizing a first waveform during welding within the joining region, and in a second mode using a second waveform, having a greater positive component than the first waveform, during welding within the edge regions. The controller determines a stickout value based on the first waveform but not the second waveform, and performs seam tracking based the second waveform but not the first waveform.