| 摘要 |
<p>PURPOSE:To adapt easily to the environment by constituting a pipe jamper device for overhead transmission line of an aluminum pipe having roughened surface applied with porous anode oxidized film of 0.3-0.5mum thick. CONSTITUTION:Surface of an aluminum pipe or an aluminum angle is sand blasted with abrasive, e.g. corundum, silicon carbide, silica sand, of #60-300 grain size thus roughening the surface with average roughness of 0.5-5mum and maximum roughness of 5-50mum. Thus roughened surface is then immersed in weak alkaline degreaser or washed with water thus removing the abrasive. It is then subjected to anode oxidization thus forming a porous anode oxidized film of 0.3-5mum thick. Anode oxidization is not limited to DC current. A light beam impinging on the film repeats refraction and random reflection thus lowering the brightness. An aluminum member applied with such surface treatment is employed in the fabrication of a pipe jamper for transmission line. According to the method, a jamper having brightness adaptable to the environment can be fabricated easily.</p> |
