| 摘要 |
A method is provided for fabricating a solar panel of different interior and exterior materials to utilize the structural and heat absorbing properties of the exterior material and the corrosion resistance of the interior material. The materials are intimately wedded along the entire length of the same by applying a fluid pressure internally against the interior material and simultaneously throughout the entire lengths of the same to displace the interior material into intimate contact with the exterior material. The fluid pressure is applied with a force which permanently deforms the interior material but which is within the elastic limit of the exterior material so that when the pressure is relieved, the exterior material contracts against the interior material causing it to deform inwardly due to compression. The resultant dimensional excursions of the interior material results in the work hardening of same. The exterior material is formed by extrusion to have diametrally extending fins, one of which terminates in a socket so that a plurality of such panels can be readily assembled in edge-to-edge relation. The apparatus employed incorporates hollow mandrels for internally engaging the lining and supporting the same while permitting a fluid pressure to be internally applied thereto and while, at the same time, permitting a relief of the pressure so that the elastic limit of the exterior material is not exceeded. The apparatus furthermore includes a device for applying the pressure impulse or impact force to the lining for deforming the lining against the exterior part.
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