Metal fusion bonding – Process – Using explosive energy
Patent
1992-07-13
1993-11-09
Rosenbaum, Mark
Metal fusion bonding
Process
Using explosive energy
228127, 228139, 2281732, B23K 2008, B23K 3100, B23K 2004
Patent
active
052595471
ABSTRACT:
This invention relates to a method for producing bi-metallic tubing wherein a layer (3,31) of a first metal is metallurgically bonded to the exterior surface of a core component (1,29) of a second metal incompatible for solid state bonding with the first metal by processes other than explosive bonding, the resulting cylindrical bonded composite (15,25) is placed within the bore of a thick-walled tube (33) of a metal compatible for solid state bonding with the first metal and the assembly (39) is heated and expanded by passing it over a profiled mandrel (43). In passing over the mandrel sufficient pressure is developed at the interface between the bonded composite and the thick-walled tube to form a metallurgical bond at the interface. When the first metal is the same as the metal of the thick-walled tube the interface is eliminated and a bi-metallic tube consisting of a single outer layer of the first metal with a bonded lining of the second metal is produced. The method is advantageous for producing large diameter tubes having an outer layer of cheaper metal for example, steel and a lining of more expensive metal corrosion-resistant metal, for example, nickel alloy.
REFERENCES:
patent: 1846368 (1932-02-01), Smith
patent: 4162758 (1979-07-01), Mikarai
patent: 4518111 (1985-05-01), Hardwick
patent: 4795078 (1989-01-01), Kuroki et al.
Imperial Chemical Industries plc
Knapp Jeffrey T.
Rosenbaum Mark
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