Process for manufacturing of brazed multi-channeled structures
AssigneeAlliedSignal Inc.
InventorsAnatol Rabinkin, Nicholas DeCristofaro
Life of this patent
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Abstract
A process is disclosed for brazing plate/plate and plate/fin multi-channeled structures using an amorphous brazing foil as a brazing filler metal between the parts in order to form uniform joints having optimal dimensions, shape and strength. The parts are assembled in an unconstrained stack, and a controlled load is applied to the top of the stack. The stack is then heated to a temperature at which the interlayer melts and reacts with the base metal to form the joints. The stack is cooled resulting in a brazed structure having the desired characteristics, wherein the brazed joints are optimally formed and the strength of the structure is equal to the underlying strength of the base metal.
Claims24
A method for brazing parts comprising the steps of:
- a) interposing a metallic interlayer in amorphous foil form between the parts to be joined;
- b) assembling the parts in an unconstrained stack;
- c) applying a controlled load on the top of the stack;
- d) heating the stack to a temperature at which the interlayer melts and reacts with the base metal;
- and
- e) cooling the stack to produce a structure with uniform joints having optimal dimensions, shape and strength;
A brazed structure comprising:
- a) a plurality of parts;
- and
- b) an amorphous foil metallic interlayer between said parts forming uniform brazed joints having optimal dimensions, shape and strength;
- wherein the strength of the structure is equal to the strength of the underlying material of the parts.
Dependencies are inferred from the claim text.