Flux cored gas shielded electrode
AssigneeThe Lincoln Electric Company
InventorsDennis D. Crockett, Ronald J. Gordish, Karl J. Kulikowski, Robert P. Munz
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Abstract
A cored electrode for gas shielded arc welding to deposit a weld metal bead, where the electrode has a core of fill material surrounded by a ferrous tube with the fill material having alloying agents and oxide fluxing ingredients including, by weight of fill material, 40-60% titanium dioxide, 0.3-0.5% boron oxide, and 1.0-5.0% aluminum powder, with the aluminum powder having a higher affinity for oxygen than the oxide fluxing ingredients and with the amount of aluminum powder selected to produce 0.02-0.08% titanium, less than 0.002% boron and less than 0.10% aluminum in the weld metal.
Claims31
A cored electrode for gas shielded arc welding to deposit a weld metal bead, said electrode having a core of fill material surrounded by a ferrous tube, said fill material having alloying agents and oxide fluxing ingredients and including, by weight of fill material, 40-60% titanium dioxide and 1.0-5.0% aluminum powder, with said aluminum powder having a higher affinity for oxygen than said alloying agents and said oxide fluxing ingredients and with the amount of aluminum powder selected to produce 0.02-0.08% titanium and less than 0.10% aluminum in said weld metal.
A cored electrode for gas shielded arc welding to deposit a weld metal bead, said electrode having a core of fill material surrounded by a ferrous tube, said fill material having alloying agents and oxide fluxing ingredients and including, by weight of fill material, 0.3-0.5% boron oxide and 1.0-5.0% aluminum powder, with said aluminum powder having a higher affinity for oxygen than said alloying agents and said oxide fluxing ingredients and with the amount of aluminum powder selected to produce at least 0.002% boron and less than 0.10% aluminum in said weld metal.
A method of gas shielded arc welding with a cored electrode to deposit a weld metal bead, said method comprising the steps of using an electrode having a core of fill material surrounded by a ferrous tube, said fill material including, by weight of fill material, 40-60% titanium dioxide and 1.0-5.0% aluminum powder, the amount of aluminum powder to produce 0.02-0.08% titanium and less than 0.10% aluminum in said weld metal.
A method of gas shielded arc welding with a cored electrode to deposit a weld metal bead, said method comprising the steps of using an electrode having a core of fill material surrounded by a ferrous tube, said fill material including, by weight of fill material, 0.3-0.5% boron oxide and 1.0-5.0% aluminum powder, and selecting the amount of aluminum powder to produce at least 0.002% boron and less than 0.10% aluminum in said weld metal.
A method of arc welding with a shielding gas to deposit a weld metal bead, said method comprising the steps of providing an electrode having a ferrous tube with a core of fill material including metal oxides and 1.0-5.0% aluminum powder by weight of said fill material;
- creating an arc between said weld metal bead and said electrode for melting said ferrous tube in a reaction zone between said electrode and said metal bead;
- and, introducing said aluminum powder into said reaction zone to reduce said metal oxides in said reaction zone with a portion of said aluminum entering said metal bead to form an aluminum alloy of less than 0.03% aluminum weight of said metal in said bead.
A cored electrode for gas shielded arc welding to deposit a weld metal bead, said electrode having a core of fill material surrounded by a ferrous tube, said fill material having alloying agents and oxide fluxing ingredients and including, by weight of fill material, 0.3-0.5% boron oxide and 1.0-5.0% aluminum powder, with the amount of aluminum powder selected to produce boron in an amount less than 0.002% and less than 0.10% aluminum in said weld metal.
Dependencies are inferred from the claim text.