Aluminum alloy tube product and method

Details Aluminum alloy tube product and method Aluminum alloy tube product and method

1980-12-23

1983-11-01

Dean, R.

Metal treatment

Compositions

Heat treating

72368, 148 115A, 148437, 148438, 165180, 165DIG8, C22F 104

Patent

active

044128690

ABSTRACT:
A method of producing aluminum tube product suitable for use in heat exchangers is disclosed. The product is characterized by a substantially uniform distribution of relatively fine, generally equiaxed constituents comprised mainly of elemental silicon. The method comprises the steps of providing in billet form a body of aluminum base alloy consisting essentially of 2 to 13 wt. % Si, 0 to 4 wt. % Zn, at least 0.005 wt. % Sr, up to 1 wt. % Fe and up to 1 wt. % Cu, the balance essentially aluminum and incidental impurities and extruding said billet to a final product or after extruding the billet to a thick wall tube, drawing to a final product for use as tubes in a heat exchanger assembly.

REFERENCES:
patent: 3843333 (1974-10-01), Woods
patent: 3926690 (1975-12-01), Morris et al.
patent: 4002502 (1977-01-01), Bainbridge et al.
patent: 4068645 (1978-01-01), Jenkinson
patent: 4077810 (1978-03-01), Ohuchi et al.
patent: 4126448 (1978-11-01), Moore et al.

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