Method for brazing a magnesium-containing aluminum alloy

Details Method for brazing a magnesium-containing aluminum alloy Method for brazing a magnesium-containing aluminum alloy

1985-12-18

1987-11-10

Godici, Nicholas P.

Metal fusion bonding

Process

Plural joints

228207, 22826317, B23K 3102

Patent

active

047052066

ABSTRACT:
An aluminum alloy including magnesium can be joined by brazing even when flux made of potassium fluoaluminates is employed. The aluminum alloy including magnesium is heated in a vacuum, so that magnesium in the aluminum alloy evaporates from the surface of the aluminum alloy. The weight ratio of magnesium at the surface of the aluminum alloy can be reduced to less than 0.5 as a result of the heating step. The aluminum alloy treated by this operation is, thereafter covered with brazing material and clad with flux. After that, the aluminum alloy is heated in a furnace in order to melt the brazing material.

REFERENCES:
patent: 4556165 (1985-12-01), Yamawaki

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