Method for making heat sink having ultra-thin fins

Details Method for making heat sink having ultra-thin fins Method for making heat sink having ultra-thin fins

1997-12-31

1999-09-07

Cuda, I

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29424, B23P 1526

Patent

active

059468033

ABSTRACT:
A method for making a ultra-thin fin heat sink includes the following steps. First, a continuous elongated heat sink bar is made by, the extrusion procedure wherein such heat sink bar is formed with a plurality of parallel closely spaced ultra-thin fins integrally extending from a base. Liquid type wax is injected into the space between every two adjacent fins until such space is completely filled with the wax. The wax is solidified after a while, and then the whole assembly including the heat sink bar with the inner wax generally becomes a whole solid reinforced structure which can bear the traditional sawing procedure. Via a fixture, the assembly is sawed/cut to pieces of the predetermined length. The cut pieces are successively heated to have the inner solid wax liquefied and leave from the heat sink unit.

REFERENCES:
patent: 5533257 (1996-07-01), Romero et al.
patent: 5572789 (1996-11-01), Fisher et al.
patent: 5791045 (1998-08-01), Yamamoto et al.
patent: 5791406 (1998-08-01), Gonner et al.

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