Nippon Light Metal Company, Ltd.

Etsuro Kubota

Tomoyuki Hirayama

Yutaka Hirano

To provide a method for manufacturing a power device cooler, which not only can accomplish cost reduction and preferable joining between the cooler and a heating element equipped with a power device but also can improve the productivity. After first and second cases and fins that constitute a cooler are brazed by means of a non-corrosive flux and a brazing filler material, the first and second cases and the fins being made of aluminum, flux residues that are attached at least to a heat receiving surface of the first and second cases that is to be joined to a heating element equipped with a power device, are removed by a wet blasting method in which a mixture of an abrasive formed of polygonal alumina particles having a median particle diameter of 4 to 250 &#x3bc;m and a liquid is projected onto the heat receiving surface by compressed air.

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Shizuoka, Japan

Etsuro Kubota