| 摘要 |
PURPOSE:To remove difficulties encountered when forming a long heat pipe container by drawing by welding a working liquid injection nozzle to a semicircular cap and welding the cap to one end portion of a heat pipe container. CONSTITUTION:An aluminum nozzle 3 is inserted into a small diameter part of a cap formed into a semicircular shape by drawing and is welded thereto at a cap welding portion 7 thereby to form the nozzle and the cap into an integral body. Next, the cap is welded to the portion 5 of a heat pipe container at a container welding portion 8 thereby to form an integral body. The interior of the heat pipe container is evacuated by means of a vacuum pump via the tip end of the nozzle, and working liquid is sealed therein. Then, the forward end of the nozzle is pressed by dies to form a nozzle press-fitting portion 9 which is then hermetically closed by the welding at a nozzle welding portion 10 to form a heat pipe. Further, for the other end of the heat pipe container, a cap is used, and the periphery of the cap is welded and hermetically closed. |
