Brazing of powdered metal parts

Details Brazing of powdered metal parts Brazing of powdered metal parts

1977-11-02

1980-04-01

Husar, Francis S.

Metal fusion bonding

Process

With pretreating other than heating or cooling of work part...

294205, 228215, 75208R, B23K 104

Patent

active

041957644

ABSTRACT:
Disclosed is a method of joining, by brazing, two metal pieces at least one of which is a powdered metal piece, each piece having a joint surface. The method includes the step of plating the joint surface of the powdered metal piece with a thin layer of metal having a relatively high melting point, assembling the pieces with their joint surfaces in substantial abutment, and applying a metal brazing composition having a flow temperature at least about 300.degree.-400.degree. F. or more less than melting point of the plating metal to the joint surfaces while heating the joint with a torch. The method eliminates the need for rigorous temperature control customarily employed in powdered metal brazing.

REFERENCES:
patent: 3222774 (1965-12-01), Kump et al.
patent: 3380151 (1968-04-01), Parsons
patent: 3409974 (1968-11-01), Lueck et al.
patent: 3744993 (1973-07-01), Matt et al.
patent: 3851985 (1974-12-01), Coleman
patent: 4029476 (1977-06-01), Knopp

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