Metal fusion bonding – Process – Chemical reaction produces filler material in situ
Patent
1975-08-20
1977-08-16
Smith, Ronald H.
Metal fusion bonding
Process
Chemical reaction produces filler material in situ
427237, 427252, B21D 5302, B23P 1526
Patent
active
040421635
ABSTRACT:
The disclosure is of a novel method of manufacturing a heat exchanger or heat transfer element of the type which comprises a heat-conductive tube enclosing a heat-conductive, porous body attached to the inner surface of the tube so that heat conducted by the porous body is transferred by the outside tubular body. By the method of the invention, the porous body may be connected to the inner surface of the tubular body without significant reduction of the porosity of the porous body. The method comprises disposing the porous body in the tube, passing vapors of a thermally decomposable metallic compound through the porous body and tube, decomposing said compound in the zone where the porous body approaches the inner walls of the tube and depositing the metallic metal product of the decomposition at the points of approach between the porous body and the inner walls of the tube whereby the porous body is connected to the tubular body by the deposition.
REFERENCES:
patent: 2390160 (1945-12-01), Marvin
patent: 2690980 (1954-10-01), Lander
patent: 3055089 (1962-09-01), Drummond
patent: 3665573 (1972-05-01), Werner et al.
patent: 3702780 (1972-11-01), Withers
patent: 3842474 (1974-10-01), Schladitz
Silverberg S.
Smith Ronald H.
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