Welding method
AssigneeAluminum Company of America
InventorsJohn M. Urbanic, Burney A. Major
Life of this patent
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Abstract
A welding method including the steps of feeding a consumable electrode of at least 1/8 -inch diameter at a constant speed toward a parent metal to be welded, while maintaining, with electrical power at an amperage-voltage characteristic having a slope of 0 to 2 amperes/volt, a direct current arc between the consumable electrode and parent metal, and while maintaining a shielding gas flow at the arc and on molten metal, wherein the electrical power is connected between the consumable electrode and the parent metal in reverse polarity, wherein the speed of the consumable electrode toward the parent metal to be welded is controlled within plus or minus 1/2% of the desired speed, and wherein the power source providing the electrical power has a dynamic regulated output current of plus or minus 5%.
Claims11
A welding method comprising the steps of feeding a consumable electrode of at least 1/8-inch diameter at a constant speed toward a parent metal to be welded, while maintaining, with electrical power at an amperage-voltage characteristic having a slope of 0 to 2 amperes/volt, a direct current arc between the consumable electrode and parent metal, and while maintaining a shielding gas flow at the arc and on molten metal, wherein the electrical power is connected between the consumable electrode and the parent metal in reverse polarity, wherein the speed of the consumable electrode toward the parent metal to be welded is controlled to within plus or minus 1/2% of the desired speed, and wherein the power source providing the electrical power has a dynamic regulated output current of plus or minus 5%.
Dependencies are inferred from the claim text.