MANUFACTURING METHOD OF COLD PLATE

PROBLEM TO BE SOLVED: To provide a manufacturing method of a cold plate capable of achieving the excellent adhesiveness of a groove of the plate to a pipe and enhancing the cooling performance and the radiation performance without increasing the material cost or the size. SOLUTION: The manufacturing method of the cold plate 1 in which a pipe 4 consisting of a metal of excellent heat transfer is arranged in a held condition in a groove 5 formed by superposing two plates 2, 3 consisting of a metal of excellent heat transfer comprises: a first step of collapsing in advance a workpiece 6 forming the pipe 4 inward in the laminating direction of the plates 2, 3; a second step of arranging the collapsed pipe 4 in a held condition in the groove 5 of the plates 2, 3; and a third step of tightly adhering an outer circumferential part of the pipe 4 to the groove 5 by outwardly swelling the pipe by increasing the internal pressure of the pipe 4 arranged in the groove 5 of the plates 2, 3. COPYRIGHT: (C)2010,JPO&INPIT