Transition joint and method for attaching dissimilar metal tubes
AssigneeGM Global Technology Operations LLC
InventorsYen-Lung Chen, Xiaohong Q. Gayden, Steven J. Wesoloski, Matthew D. Scrase
Life of this patent
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Abstract
A method is provided for welding together a tubular member of a first metal and a tubular member of a second metal that is dissimilar to the first metal. The method includes making a transition attachment by friction welding together end-to-end a first end of a rod of the first metal with a first end of a rod of the second metal. An arc weld welds together a second end of the rod of the first metal with the tubular member of the first metal. And another arc weld welds together a second end of the rod of the second metal to the tubular member of the second metal.
Claims20
A method for welding together a steel tubular cage and an aluminum frame, comprising:
- welding together end-to-end a hollow steel tube and a steel rod;
- friction welding together end-to-end the steel rod and an aluminum rod;
- welding the aluminum rod to the aluminum frame;
- and welding an end of the steel tubular cage to the hollow steel tube.
A method for welding together a tubular member of a first metal and a tubular member of a second metal that is dissimilar to the first metal, comprising:
- making a transition attachment by friction welding together end-to-end a first end of a rod of the first metal with a first end of a rod of the second metal;
- arc welding together a second end of the rod of the first metal with the tubular member of the first metal;
- and arc welding together a second end of the rod of the second metal to the tubular member of the second metal.
A method for welding a steel tubular cage to the opposed walls of an aluminum tube, comprising:
- friction welding together end-to-end a steel rod and an aluminum rod;
- providing aligned holes in the opposed walls of the aluminum tube, inserting the aluminum rod through the aligned holes and then arc welding the aluminum rod to the opposed walls of the aluminum tube;
- and arc welding an end of the steel tubular cage to the steel rod.
A transition joint assembly for welding together a tubular member of a first metal and a tubular member of a second metal that is dissimilar to the first metal, comprising:
- a rod of the first metal having a first end and also having a second end adapted for arc welding to the tubular member of the first metal;
- and a rod of the second metal having a first end that is friction welded to the first end of the rod of the first metal, and also having a second end adapted for arc welding to the tubular member of the second metal.
Dependencies are inferred from the claim text.