Method of brazing aluminum alloys without filler metal

Details Method of brazing aluminum alloys without filler metal Method of brazing aluminum alloys without filler metal

1987-12-16

1990-07-24

Godici, Nicholas P.

Metal fusion bonding

Process

Diffusion type

228231, 228232, 228234, 228239, B23K 2000

Patent

active

049430009

ABSTRACT:
A method is disclosed for brazing without filler metal two components, of which at least one is an Al alloy. According to the method, prior to brazing, at least one Al alloy component is maintained in a region of temperatures included between the temperature of solvus T.sub.v of the alloy and 2/5 of temperature of fusion (solidus) T.sub.s of the alloy, expressed in degrees Kelvin, for a sufficient period of time. After this treatment, which may or may not be isothermal, the alloy is suitable for brazing in a domain of temperatures included between the temperature of fusion T.sub.e of the most fusible eutectic corresponding to the equilibrium diagram of the constituents of the alloy, and that of the solidus of the alloy. The method permits the realization of perfectly homogeneous brazed seams for alloys considered not to be brazable.

REFERENCES:
patent: 4141482 (1979-02-01), Reynolds
patent: 4586964 (1986-03-01), Finnegan et al.
patent: 4626295 (1986-12-01), Sasaki et al.
patent: 4695699 (1987-09-01), Yagii et al.
patent: 4699310 (1987-10-01), Kohno et al.
patent: 4717068 (1988-01-01), Meyer
patent: 4722469 (1988-02-01), Rydstad et al.
"Preheating for Welding", The Welding Journal, 4/77.
Tempil Preheating Chart, 1941.

Affiliated with

Also associated with

Rating

Method of brazing aluminum alloys without filler metal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of brazing aluminum alloys without filler metal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of brazing aluminum alloys without filler metal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1263730