B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/48
B23K 9/16 (2006.01) B23K 9/02 (2006.01) B23K 9/173 (2006.01) B23K 35/38 (2006.01)
Patent
CA 1307563
1909.016 DOWNWARD) GAS-METAL-ARC WELDING PROCESS ABSTRACT OF DISCLOSURE A gas-metal-arc welding process, utilizing a consumable, axially advanced, wire electrode and a four-gas shielding mixture, forms a weld bead along a vertically downwardly direction. As the bead is formed, the electrode is moved vertically downwardly in alignment with the central axis of the bead, with the tip of the electrode gapped from the weld material deposit which forms the bead. A relatively high electrical voltage and current density is applied to the electrode to produce a stable, conically- shaped hot plasma field. The field is concentric with the axis of the electrode and extends across the gap. The plasma field is positioned to transversely overlay, and to be substantially coextensive with, the full width Or the bead. Molten metal globules transfer by free flight along the axis of the field, from the electrode tip across the gap to the weld deposit to laterally spread out and adhere to the deposit to form the bead. ewp/1909.016/bjcX
601644
Church John G.
Ridout & Maybee Llp
LandOfFree
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