| 摘要 |
<p>Apparatus for electric arc treating the surface of a workpiece, the surface having a substantial area. The treating is effected by a continuous, closed loop electrode having a main body portion and a closed tip edge projecting laterally from a general plane of the main body portion for establishing an arc between the tip edge and the workpiece surface. The arc is moved about the continuous electrode tip by magnetic means located in close proximity to the electrode, the magnetic means including a closed loop pole member spaced outwardly of and concentric with the closed loop tip edge. A second pole member of a polarity opposite the outer pole member is located in the general center of the closed loop tip edge.</p> |
