Method of producing body having flow path formed therein, and body having flow path formed therein

Abstract

The present invention provides a water-cooled heat sink having an integrated structure, and having inside a precise, freely formed flow path, the water-cooled heat sink being produced without using a technique for pasting a plurality of metal sheets. In a water-cooled heat sink 1 , a formed body 2 is provided outwardly, a flow path 3 for passage of a liquid is formed inwardly of the formed body 2 , and an inlet 5 and an outlet 4 for the liquid, which communicate with the flow path 3 , are formed in the main body of the heat sink 1 . The entire formed body 2 of the heat sink 1 is integrally formed by thick coating layers applied by electroplating, and has no joints.

1 - 5 . (canceled) 
     
     
         6 . A body having a flow path formed therein,
 comprising:
 a formed body provided outwardly; 
 the flow path formed inwardly of the formed body for passage of a fluid; and 
 an inlet and an outlet for the fluid formed in the formed body for communication with flow path, and 
 wherein a whole of the formed body is integrally formed by thick plating layers applied by electroplating. 
   
     
     
         7 . The body having a flow path formed therein according to  claim 6 ,
 the body being a water-cooled heat sink in which the formed body is formed by electroplating with Cu, and cooling water flows through the flow path.   
     
     
         8 . The body having a flow path formed therein according to  claim 6 , wherein
 an inner surface of the flow path formed in the formed body is coated with a corrosion resistant film.   
     
     
         9 . The body having a flow path formed therein according to  claim 8 , wherein
 the corrosion resistant film is either a film comprising one of Ti, Ni and Au, or a multilayer film comprising at least two of Ti, Ni and Au.   
     
     
         10 . The body having a flow path formed therein according to  claim 7 , wherein
 an inner surface of the flow path formed in the formed body is coated with a corrosion resistant film.   
     
     
         11 . The body having a flow path formed therein according to  claim 10 , wherein
 the corrosion resistant film is either a film comprising one of Ti, Ni and Au, or a multilayer film comprising at least two of Ti, Ni and Au.