| 摘要 |
PURPOSE:To improve the corrosion resistance, lightness, workability, and heat exchange efficiency of the titled section by embedding copper-made pipes in a extrusion section body made of Al in one body. CONSTITUTION:The main extrusion section 11 for a heat exchanger has such a structure that plural Cu-made pipes 2, 2... are embedded integrally in the Al- made extrusion section body 1. In this case, when the section 11 is manufactured, the pipes 2, 2... are supplied through a mandrel in a direction parallel to an extrusion direction and at the same time, Al as metal for the extrusion section is extruded to cover the pipes 2, 2... tightly. |
