Systems and methods for corrosion-resistant welding electrodes
First Claim
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1. A corrosion-resistant weld deposit formed on a coated workpiece, wherein the weld deposit comprises:
- greater than 50% iron by weight;
between greater than approximately 0.5% and less than 10% chromium by weight;
between greater than approximately 0.02% and less than 10% nickel by weight; and
between approximately 0.05% and approximately 2% copper by weight;
a total alloy content, including chromium, nickel, and copper, of less than 10% by weight;
wherein the weld deposit has a porosity less than approximately 0.25 inches per inch of the weld deposit; and
wherein the weld deposit is a low alloy weld deposit that is characterized by a martensitic structure, a ferritic structure, or a combination thereof.
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Abstract
The invention relates generally to welding and, more specifically, to corrosion resistant weld deposits created during arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). A disclosed corrosion resistant weld deposit comprises nickel, chromium, and copper, and has a low porosity.
149 Citations
20 Claims
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1. A corrosion-resistant weld deposit formed on a coated workpiece, wherein the weld deposit comprises:
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greater than 50% iron by weight; between greater than approximately 0.5% and less than 10% chromium by weight; between greater than approximately 0.02% and less than 10% nickel by weight; and between approximately 0.05% and approximately 2% copper by weight; a total alloy content, including chromium, nickel, and copper, of less than 10% by weight; wherein the weld deposit has a porosity less than approximately 0.25 inches per inch of the weld deposit; and wherein the weld deposit is a low alloy weld deposit that is characterized by a martensitic structure, a ferritic structure, or a combination thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification