Method for manufacturing aluminum tube and fin heat...

Details Method for manufacturing aluminum tube and fin heat... Method for manufacturing aluminum tube and fin heat...

2009-01-23

2011-12-13

Afzali, Sarang (Department: 3726)

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

C029S890030, C029S890053, C029S890054, C029S523000, C228S183000, C228S173400

Reexamination Certificate

active

08074356

ABSTRACT:
According to the preferred embodiment, an improved method and apparatus for the manufacturing of an aluminum tube and aluminum fin heat exchanger that includes steps for pneumatic cleaning, thermal cleaning, and uncontrolled-atmosphere open-flame autobrazing of hairpins to return bend fittings. The method uses a tube lubrication system that is adjustable to control amount of lubrication applied to the tube prior to final expansion. The method uses a pneumatic coil cleaning station that is adjusted to reduce the residual oil particulate from the expansion process required to be thermally cleaned.

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