| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a thin-walled bottomed metal cylindrical member which can prevent oxidation and rusting on an inner circumferential surface of the member, can prevent generation of cracking and fissuring in the wall-thickness direction of the member and can prevent leakage of cooling water passing through a cooling hole, and a manufacturing method therefor. <P>SOLUTION: The thin-walled bottomed metal cylindrical member 1 comprises a metallic outer cylinder 2 and a metallic inner cylinder 4 which is enclosed inside the outer cylinder 2. The metallic inner cylinder 4 includes a cooling hole 1c that is a bottomed hole having a bottom part 1d at its tip part 1a. The inner circumferential surface 2a of the outer cylinder 2 and the outer circumferential surface 4a of the inner cylinder 4 are joined together in a tightly adhered state via brazing filler metal. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
