Method for the manufacture of a heat sink, and heat sink obtained by this method.

摘要

1. A method of manufacturing a heat sink formed by a base (1) of light aluminium alloy material forming support for heat dissipation ribs (31 ... 3n-1 ), characterized in that it consists in realizing the base (1) and the ribs (31 ... 3n-1 ) out of a light aluminium alloy material, in making grooves (21 ... 2n ) into the base, each groove being dimensioned so as to permit the engagement of a rib (31 ... 3n-1 ) by at least one of its edges, in covering by an electrolytical process the base and the ribs with a superficial layer of copper (4), in engaging the edges (71 ... 7n ; 81 ... 8n ) of each rib which has to be fixed to the base (1) into the corresponding grooves (21 to 2n ) and in soldering, by fusion of a tin admixture, the edges of the ribs engaged in the grooves for realizing the permanent assembly of the ribs (31 ... 3n-1 ) on the base.