Method of deionising and clarifying the aqueous medium used in an electrical discharge machine and the product used in said method

The invention relates to a method of deionising and clarifying the aqueous medium used in an electrical discharge machine and the product used in said method. The aforementioned electrical discharge machines include a circuit for purifying said aqueous medium comprising a phase involving ion exchange between anionic and cationic resins with the aqueous dielectric medium, said medium having a conductivity of less than 40 mu S/cm. According to the invention, the following is added to the aqueous medium: a solution in distilled/deionised water of oxalic acid and phosphoric acid, in an approximate proportion of oxalic acid of between 0.18 and 0.035 moles and phosphoric acid of between 1.28 and 2.5 moles per litre of solution. The invention is suitable for use in electrical discharge machines. 本发明涉及用于电浸蚀装置的水介质去离子和净化的方法及其所用产品。所述的电浸蚀装置包括净化水介质的回路，该回路包含有阳离子与阴离子之间的离子交换相，其内有含水电介质；所述介质的电导率低于40uS/cm。按照本发明，将溶液加入到水介质中，该溶液为蒸馏/去离子水的草酸与磷酸溶液，其中，合适的比例为每升溶液中，草酸为0.18-0.035摩尔，磷酸为1.28-2.5摩尔。本发明适用于电浸蚀装置。