| 摘要 |
PURPOSE:To save conductive material and enhance productivity by forming conductor which configurates a shading coil by the mig-welding of a conductor which forms a shading coil with a welding wire consisting of predetermined conductive material used as the electrode. CONSTITUTION:A shading coil 3 is formed in the following processes that the mig-welding is carried out in the parallel grooves 1a, 1b formed at the end surface of layered iron core 1 with a welding wire made of conductive material used as the electrode and then further carrying out the mig-welding to the end portions of conductors 3a, 3b fixed in the grooves 1a, 1b in order to form short- circuited annular shape. As said conductive material, copper, phosphor bronze or aluminum, etc. is generally used. |
