Resistance welding of aluminum
First Claim
1. A method of effecting resistance welding of aluminum to aluminum, characterized by placing a clad plate between first and second aluminum plates to be welded, the clad plate comprising a resistor between third and fourth aluminum plates, the resistor having a specific resistance at least two times that of aluminum, and supplying an electric current through the aluminum plates to be welded and the clad plate.
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Accused Products
Abstract
Placing a clad plate, comprising a resistor having a specific resistance at least two times that of aluminum, between two aluminum plates or between an aluminum plate and non-aluminum plate metal plate to be welded, and supplying an electric current through the aluminum plates to be welded and the clad plate. The clad plate itself may have aluminum plates sandwiching the resistor, the thickness each of the aluminum plate of the clad plate is from 1/4 to 6 times that of the resistor. The resistor can be made of iron, steel, titanium, tantalum, nickel, zirconium, and alloys thereof.
40 Citations
20 Claims
- 1. A method of effecting resistance welding of aluminum to aluminum, characterized by placing a clad plate between first and second aluminum plates to be welded, the clad plate comprising a resistor between third and fourth aluminum plates, the resistor having a specific resistance at least two times that of aluminum, and supplying an electric current through the aluminum plates to be welded and the clad plate.
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8. A method of effecting resistance welding of aluminum to aluminum, characterized by placing a clad plate between first and second aluminum plates to be welded, the clad plate comprising a resistor between third and fourth aluminum plates, the resistor having a specific resistance at least two times that of aluminum, and supplying an electric current through the aluminum plates to be welded and the clad plate, the resistor being made of titanium or an alloy thereof.
- 9. A method of effecting resistance welding of aluminum to a metal different from aluminum, characterized by placing a clad plate between a first aluminum plate and a first non-aluminum plate to be welded, the clad plate comprising a second aluminum plate and a second plate of non-aluminum metal having a specific resistance two or more times that of aluminum, and supplying an electric current through the first aluminum plate, the clad plate, and the first non-aluminum metal plate, the electric current being constant and the clad plate being spot welded to the first aluminum plate and the first non-aluminum plate during the supplying of the electric current through the first aluminum plate, the clad plate and the first non-aluminum plate.
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14. A method of effecting resistance welding of aluminum to a metal different from aluminum, characterized by placing a clad plate between a first aluminum plate and a first non-aluminum plate to be welded, the clad plate comprising a second aluminum plate and a second plate of a non-aluminum metal having a specific resistance two or more times that of aluminum, and supplying an electric current through the first aluminum plate, the clad plate, and the first non-aluminum metal plate, the metal different from aluminum being a metal selected from the group consisting of iron, steel, titanium, tantalum, nickel, zirconium, and alloys thereof, the resistor being made of titanium or an alloy thereof.
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15. A method of effecting resistance welding of aluminum to a metal different from aluminum, characterized by placing a clad plate between a first aluminum plate and a first non-aluminum plate to be welded, the clad plate comprising a second aluminum plate and a second plate of a non-aluminum metal having a specific resistance two or more times that of aluminum, and supplying an electric current through the first aluminum plate, the clad plate, and the first non-aluminum metal plate, the metal different from aluminum being a metal selected from the group consisting of iron, steel, titanium, tantalum, nickel, zirconium, and alloys thereof, the resistor being made of nickel or an alloy thereof.
- 18. A method of effecting resistance welding of aluminum to aluminum, characterized by placing a clad plate between first and second aluminum plates to be welded, the clad plate comprising a resistor between third and fourth aluminum plates, the resistor having a specific resistance at least two times that of aluminum, and supplying an electric current through the aluminum plates to be welded and the clad plate, the thickness of each aluminum plate of the clad plate being from 1/4 to 6 times that of the resistor.
Specification