Electromagnetic pulse welding of fluid joints
First Claim
1. A magnetic forming system for creating a non-sealant based metallurgically formed fluid circuit joint between a wall of the end portion of a metal tube and the wall of a fitting portion of a hollow metal fitting wherein said tubular portion is partially inserted into said fitting portion of said metal fitting whereby the wall portions of the tube and the fitting are combined into a single shared wall element comprising:
- an induction coil forming an electromagnetic current; and
a field concentrator assembly electrically coupled to said induction coil and forming an electromagnetic field in response to said electromagnetic current, said field concentrator assembly comprising;
a field concentrator focusing said electromagnetic current to form said electromagnetic field; and
a nest configured to contain the tube at least partially positioned within the fitting; and
an inward constraining mandrel positioned within said fitting and said tube;
said field concentrator and nest concentrating the magnetically exerted pressure to a specific location on at least one of said tube and fitting to produce a sufficient amount of magnetic compressive or expansive force to conform and to deform at least one of said tube and fitting to generate a solid state atomic bonded, cold weld in which the wall portions of the fitting and the tube are metallurgically combined to form the fluid circuit joint, and wherein said mandrel limits the inward displacement of said fitting and said tube.
1 Assignment
0 Petitions
Accused Products
Abstract
A metallurgically formed fluid circuit joint includes a hollow fitting (298), a tubular conduit (297), and a metallurgically formed tube/fitting mesh (296). The tube/fitting mesh (296) includes a fitting portion of the hollow fitting (298) and a tube portion of the tubular conduit (297) that is electromagnetically formed with the fitting portion.
55 Citations
16 Claims
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1. A magnetic forming system for creating a non-sealant based metallurgically formed fluid circuit joint between a wall of the end portion of a metal tube and the wall of a fitting portion of a hollow metal fitting wherein said tubular portion is partially inserted into said fitting portion of said metal fitting whereby the wall portions of the tube and the fitting are combined into a single shared wall element comprising:
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an induction coil forming an electromagnetic current; and a field concentrator assembly electrically coupled to said induction coil and forming an electromagnetic field in response to said electromagnetic current, said field concentrator assembly comprising; a field concentrator focusing said electromagnetic current to form said electromagnetic field; and a nest configured to contain the tube at least partially positioned within the fitting; and an inward constraining mandrel positioned within said fitting and said tube; said field concentrator and nest concentrating the magnetically exerted pressure to a specific location on at least one of said tube and fitting to produce a sufficient amount of magnetic compressive or expansive force to conform and to deform at least one of said tube and fitting to generate a solid state atomic bonded, cold weld in which the wall portions of the fitting and the tube are metallurgically combined to form the fluid circuit joint, and wherein said mandrel limits the inward displacement of said fitting and said tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A magnetic forming system for creating a non-sealant based metallurgically formed fluid circuit joint between a wall of the end portion of a metal tube and wall of the fitting portion of a hollow metal fitting wherein said tubular portion is partially inserted into said fitting portion of said metal fitting whereby the wall portions of the tube and the fitting are combined into a single shared wall element, comprising:
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an end former expanding at least a portion of the tube; an induction coil forming an electromagnetic current; a field concentrator assembly electrically coupled to said induction coil and forming an electromagnetic field in response to said electromagnetic current, said field concentrator assembly comprising;
a concentrator focusing said electromagnetic current to form said electromagnetic field;a nest configured to contain the fitting at least partially positioned within said portion; and an inward constraining mandrel positioned within said fitting and said tube; said field concentrator and nest concentrating the magnetically exerted pressure to a specific location on at least one of said tube and fitting to produce a sufficient amount of magnetic compressive or expansive force to conform and to deform at least one of said tube and fitting to generate a solid state, atomic bonded cold weld in which the wall portions of the fitting and the tube are metallurgically combined to form the fluid circuit joint, and wherein said mandrel limits the inward displacement of said fitting and said tube. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification