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2. the processing of plex cavity It is a strength of Chamier to use the technology of translation to allocation of time reasonablely for the processing of plex cavity。 ORB the translation software Chamier used has following characteristics : ●The electrode moving along the contour of cavity surface according to the directive which have been request, at the same time dressing intensive and bottom precisly, with this methods it is favor to control the size。 ● electrode could be servo or carry knives in the direction of cavity surface , keep it no difference pared the intensive of partial surface of every cavity to the discharge of the main straight down or up conventionally, processing is stable and reliable。 ●Discharge to the surrounding in turns according to the speed of 1~2r/min , cutting layer by layer and would’t stay too long in a piont。 It can ensure the BTA patency。 ●Allowance in the every direction of cavity surface at the realtime is link to the translational speed, It will cause the time of dressing spent on long line more than the short line and uneven of allowance can get pensation。 Die in processing, we will face the problem of processing of trace cavity。 It is may be unfamiliar to Chinese users about trace cavity, but it’s high valueadded。 Characterized by small size , less allowance electrode manufacturing difficulties, they require machining, minimize loss, increase the success rate。 Chamier development of this set of special techniques to detect space, processing parameters and servo agile regulation unified integration , the implementation of precision control。 In many machining of microcavity, Chamier’s get achievements that the electric machine had reached the consistency of processing time does not exceed 5% and 30% of the electrode be decreased in the number。 3, the elimination of surface microcracks Now the accepted high valueadded Die is longevity of carbide precision die。 Die in the course of processing, water electrolysis work on the damaging effects of the impact on the quality of die major factor , Its main characteristics are as follows : Open the binder dissolved surface, or surface micro cracks。 Under normal circumstances, surface cracks will not only produce electricity processing, even the grinding, If improper operation will have。 This was mainly due to local overheating, with work on local erosion caused when sudden cold, causing surface cracking。 In fact, the use of the average exchange zero voltage pulsed power and high resistivity deionized water as a working fluid。 Electrolysis destruction has been reduced to the minimum。 Chamier’s contribution to this area 。 is solve the problem of microcracks on surface and technical measures are those : ● Use of the peak value and