| 摘要 |
<p>A heat sink core member made by: preparing a predetermined mass of aluminum block, extruding the aluminum block through an extruding machine into a tubular body having one close end wall and then punch-cutting the outside wall of the tubular body to form a plurality of densely distributed and equally spaced vertical retaining grooves. Radiation fins can easily be affixed to the vertical retaining grooves of the tubular body to form a heat sink.</p> |
