US 12,134,154 B2
Submerged arc welding systems and submerged arc welding torches to resistively preheat electrode wire
Zakary Stapp, Greenville, WI (US); Jake Zwayer, Appleton, WI (US); Aniruddha Bhide, Neenah, WI (US); and Valarie Schwartz, Appleton, WI (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Filed by Illinois Tool Works Inc., Glenview, IL (US)
Filed on May 23, 2023, as Appl. No. 18/322,141.
Application 18/322,141 is a continuation of application No. 16/556,969, filed on Aug. 30, 2019, granted, now 11,654,503.
Claims priority of provisional application 62/726,190, filed on Aug. 31, 2018.
Prior Publication US 2024/0017343 A1, Jan. 18, 2024
Int. Cl. B23K 9/18 (2006.01); B23K 9/10 (2006.01); B23K 9/14 (2006.01); B23K 9/28 (2006.01)
CPC B23K 9/186 (2013.01) [B23K 9/1068 (2013.01); B23K 9/1093 (2013.01); B23K 9/14 (2013.01); B23K 9/285 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A submerged arc welding torch, comprising:
a first contact tip configured to transfer weld current and preheating current to the electrode wire;
a second contact tip configured to conduct the preheating current to the electrode wire;
an air-cooled first conductive body portion configured to receive the weld current at a first power connector and to conduct the weld current and the preheating current to the first contact tip;
an air-cooled second conductive body portion configured to receive the preheating current at a second power connector and to conduct the preheating current to the second contact tip; and
an insulator configured to detachably connect the first conductive body portion to the second conductive body portion and to electrically insulate the first conductive body portion from the second conductive body portion while connected.