首頁 » EMAG PECM Machines 精密電化學加工設備
2011/01/22

EMAG 精密防止毛刺游離 ECM / PECM 電化學加工技術

在切削加工領域,去毛刺並不是什麼核心工藝,相反長久以來去毛刺一直被很多人視作是一件無法避免的麻煩事。 因此許多用戶或機床製造商在安排整個生產工藝時,雖然非常注重切削工藝的合理安排及優化,但對去毛刺卻是一開始就掉以輕心,不做統籌安排,結果涉及到去毛刺時,生產系統的經濟性大大下降。 面對這種困境,埃馬克集團慧眼識馬,審時度勢,及時吸納子公司ECM電化學加工有限公司,不僅使埃馬克集團填補了去毛刺領域的技術空白,而且使埃馬克集團的整體技術趨於完善,使埃馬克集團成了一個能一手提供含去毛刺在內的所有切削工藝的多面手。

  形狀複雜的工件往往包含可達性很差的加工位置。 後棱、凹腔、內腔交叉孔的相慣線等對機械加工來說並不是什麼大不了的事情,然而當涉及到給這些可達性差的位置去毛刺時卻會讓許多人覺得束手無策,因為要在不影響材料的情況下完成精密去毛刺不是輕而易舉的事情。 採用傳統去毛刺法,如機械法、高溫法、或噴水法等,很難達到預想的高效性、經濟性或均一性。 在大中批量的生產中,由於內腔存在的毛刺會嚴重影響工件性能,所以去毛刺質量成了人人關注的焦點。 與此同時,在去毛刺實踐中還存在著一個技術問題,就是所謂的二級去毛刺:也就是說,在用普通機加方式去毛刺時會形成後續毛刺或形成倒毛現象,即毛刺游離,從而出現事先未定義的加工狀態。 因此埃馬克ECM電化學加工有限公司,即以前的Dorner 有限公司,致力於電化學去毛刺的開發和研究。


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2010/12/12

Precision Electrochemical Machining (PECM)

The new advancement in Electrochemical processing technology is PECM and MicroECM, with this exciting new technology electrochemical Machining can compete directly with such technologies as EDM Electrical discharge Machining but without any of the disadvantages, such as; high tool wear and cost, slow machining time, rough surface finishes, recast layers, high running costs.
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2010/12/12

The PECM process – the advantages in detail

– Workpiece can be moulded from the electrode
– No electrode wear – dimensional accuracy within the series
– No microstructure change on the workpiece as no process-related 
   thermal or mechanical loads evolve
– Eminently suitable for small and large series as well as the manufacture 
   of prototypes
– Inexpensive process
– Maximum corrosive resistance, favourable cleaning and sterile 
   characteristics
– Largely particle-free
– Process- and product-neutral
– Absolutely burr-free
– Processing independent of material hardness
– Roughing/Smoothing/Polishing possible in a single work step
– Processing super-alloys (Inconel, Hastelloy etc.)

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2010/12/12

The PECM Process

The PECM process is a further development of electrochemical cavity-sinking. Thanks to an innovative machine concept and improved process guidance – both developed in-house at PEMTec – it has been possible to significantly extend and improve the application possibilities associated with the conventional ECM cavity-sinking process.
 
Das PEMVerfahren Das PEMVerfahren
Influenced by the electric field, the ions move depending on their charge towards the polar-charged electrodes. By absorbing or discharging their electrons, they in turn cancel out their charge. The metal ions forming on the anode and reacting with the electrolyte solution combine with the hydroxide ions in the electrolyte solution. In a subsequent chemical reaction, they are discharged as not readily soluble hydroxide.
The reaction at the cathode also causes the used hydroxide ions to be delivered. The ions of the dissociated electrolyte are not involved in the chemical reactions but have the task of guaranteeing sufficient conductivity in the solution. Electrolytical erosion of metal only involves electric energy and water. No material erosion takes place at the cathode; only hydrogen gas develops.

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2010/11/30

EMAG PECM Machines 精密電化學加工中心






PECM installation of modularly upgradeable machine tool concept. 

  • Sophisticated 2D and 3D micro structures
  • Optional upgrades with auxiliary axes for clamping systems and machining sequences
  • Scalable generator technology, up to 40,000 A
  • Pulse frequencies of up to 100 kHz
  • Temperature and pH-value control
  • Conductance monitor
  • Microfiltration
  • Machine base in Mineralit
  • High degree of positioning accuracy
  • Precision oscillator
  • Graphic visualisation with ergonomic operator interface 

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2010/11/30

EMAG PECM Machines PO/PT 精密電化學七軸加工中心

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PECM system based on a modularly upgradeable machine tool concept.

  • Sophisticated 2D and 3D micro structures
  • Optional upgrades: auxiliary axes for clamping systems and machining sequences
  • Scalable generator technology, up to 40,000 A
  • Pulse frequencies of up to 100 kHz
  • Temperature and pH-value control
  • Conductance monitor
  • Microfi ltration
  • Machine base in MINERALIT® or granite
  • High degree of positioning accuracy
  • Precision oscillator
  • Graphic visualisation with ergonomic operator interface

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2010/11/30

The advantages of electro-chemical machining



The advantages of electro-chemical machining

  • Low-level tool (cathode) wear, offering ideal preconditions for batch production 
  • Surface finishes of up to Ra 0.05 
  • Precise machining 
  • No negative thermal and mechanical effects on the component, thus no changes in the microstructure of the material 
  • No negative influences on material properties 
  • Hardness, toughness and magnetic qualities of the material are not changed 

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