| 摘要 |
Process for deionization and clarification of the aqueous medium (A) used in electrical discharge machines that contain a purification circuit including a phase for ion-exchange between cationic and anionic resins and the dielectric aqueous medium. Process for deionization and clarification of the aqueous medium (A) used in electrical discharge machines that contain a purification circuit including a phase for ion-exchange between cationic and anionic resins and the dielectric aqueous medium. The new feature is that the aqueous medium, having conductivity below 40 mu S/cm, is treated with a solution, in deionized/distilled water, of 0.035-0.18 M oxalic acid (I) and 1.28-2.5 M phosphoric acid (II). An independent claim is also included for the specified solution of (I) and (II). |
