| 摘要 |
1,109,992. Electromagnetic forming. SIEMENS-SCHUCKERTWERKE A.G. 6 Sept., 1965 [19 Sept., 1964], No. 38051/65. Heading B3Q. A field concentrator for use in an electromagnetic forming coil comprises separate copper-beryllium &c. parts 12, 13, Fig. 1b, insulated from each other and defining a space for receiving the work. In a different form, Figs. 2a and 2b (not shown), at least one concentrator formed of separate parts (24, 25) is received within a larger concentrator (22) having a radial gap containing insulation (23). External and internal rings of insulation (26, 27) are provided on the parts (24, 25). |
