MANUFACTURING METHOD OF HEAT CONDUCTIVE MEMBER

PROBLEM TO BE SOLVED: To provide a manufacturing method of a heat conductive member which inserts a columnar ceramics body into a metal tube, equally contracts the metal tube in diameter, and integrates the column ceramics body and the metal tube to each other.SOLUTION: A columnar ceramics body 11 having a flow passage in which a first fluid circulates is inserted into a metal tube 12 with an interval, and the metal tube 12 is pulled to the outside of an axial direction while heating the metal tube 12. Then, the metal tube 12 and the columnar ceramics body 11 are made to contact with each other by contracting the metal tube 12 in diameter, and a heat conductive member 10 is obtained by integrating the metal tube and the columnar ceramics body. It is preferable to keep a temperature difference of the metal tube 12 in an axial direction at 100°C or higher. More preferably, the integration is performed while keeping a temperature difference between a contact part 12b of the metal tube 12 contacting with the columnar ceramics body 11 and the other heated part 12d of the metal tube 12 at 100°C or higher. 【課題】金属管に柱状セラミックス体を挿入し、金属管を均一的に縮径させてこれらを一体化する熱伝導部材の製造方法を提供する。【解決手段】第一の流体が流通する流路を有する柱状セラミックス体１１を、金属管１２に間隙を有した状態で挿入し、金属管１２を加熱しつつ軸方向外側に金属管１２を引っ張る。そして金属管１２を縮径させて金属管１２と柱状セラミックス体１１と接触させ、これらを一体化させて熱伝導部材１０とする。金属管１２を引っ張る際に、金属管１２の軸方向における温度差を１００℃以上に保つことが好ましい。さらに好ましくは、金属管１２の柱状セラミックス体１１と接触した接触部１２ｂと、金属管１２のその他の加熱部１２ｄとの温度差を１００℃以上に保ちつつ、一体化する。【選択図】図１Ａ