| 摘要 |
PURPOSE:To improve productivity and performances by sticking a highly conductive thin member in which the through holes having small and large diameter openings are made through electronic beam working on another waste heat base metal, and by providing narrow grooves on sticking surface. CONSTITUTION:Holes 11 are made at given relative places in a high heat conductivity thin member 1 having a number of narrow grooves on one side through electronic beam working. Said holes 11 have large diameter openings 2 on narrow groove 4 side and small diameter openings 3 on the opposite side. Further, said large diameter openings 2 are communicated to said narrow grooves 4. Sticking is made with the large diameter opening side of said thin member 1 contacted with the surface on which said narrow grooves 6 are provided of said high heat conductivity base metal 5. Thereby, the holes 11 of thus-made porous wall are wide on inner side and narrow at outlet 3. Therefore, generated air bubbles do not separate from said holes 11 soon, but grow before separation so that heat conductivity is improved considerably. Further, electronic beam working facilitates control and improves productivity. |
