| 摘要 |
<p>A method for manufacturing a heat radiator can improve flatness, and joints a base plate (11) and metallic members (2, 3) of fins arranged side by side on the lower surface of the base plate (11) in a fricative and mixing way. The method includes a preparation step for forming a butting joint portion (J) by jointing the end faces (12, 12) of the base plate (11), and a jointing step of inserting a rotary tool (F) from the upper surface of the base plate (11) into the butting joint portion (J) to form a fricative and mixing joint. In the jointing step, the jointing process is carried out when the metallic members (2, 3) are inclined to make the butting joint portion (J) higher.</p> |
