| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a process for producing a heat radiator in which machining can be carried out by a constant operation in a correction process performing plastic deformation machining while confining variation in the shape of the heat radiator within a specified range in the production stage, and a deformation capable of stabilizing the shape after deformation can be secured surely. <P>SOLUTION: As a heat radiator 10, a clad plate where the opposite sides of a substrate layer 22 is clad with plate layers is employed and the thickness of the plate layer on the bonding surface side of the insulating substrate is set smaller than that on the other side. The process for producing the heat radiator 10 comprises a rolling step (S10) for forming a clad plate 20 by hot pressing metal plates of an identical material having a different thickness laminated on the upper and lower surfaces of a core metal plate, a step (S11) for rolling and cutting the clad plate 20 after it is cooled down to room temperature and then shaping it as desired, and a correction step (S12) performing plastic deformation machining at room temperature such that it is curved to project to the bonding surface side of the insulating substrate and to the other side. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
