EMAG NEWS 21 PECM TECHNOLOGY
Smooth Solution for Complex Applications
Demanding shapes, high-strength materials – even in the most diffi cult circumstances, PECM technology produces excellent results.
Take fuel injectors, for example: Precision electro-chemical machining (PECM) not only allows the complex component to be machined with extreme accuracy, but PECM systems like the PT 400 from EMAG also produce extraordinary surface quality, with no burr formation and without changing the material structure. Even highstrength alloys and other challenging materials can be machined with practically no tool wear. In addition, the EMAG tool concept ensures great fl exibility since it is modularly upgradeable when new requirements are faced.
Conclusion: Low wear, precise and zero contact. The production of fuel injectors and other complex components benefi ts substantially.
FOR EVEN MORE ACCURACY Background of PECM Technology
The PT 400 from EMAG
< 20 μm
ACCURACY OF THE IMAGE
The PECM system has a modularly upgradeable tool concept for sophisticated 2D and 3D structures.
Electro-chemical machining (ECM) removes metal gently by means of electrolysis, the workpiece becomes the positive anode and the tool becomes the negative cathode. An electrolyte solution fl ows between the two. This removes metal ions from the workpiece.
This process has been perfected in the form of PECM (precision electro-chemical machining). The machining gap is very narrow to ensure that the tools can remove material with even greater precision. In addition, a mechanical oscillation movement helps the electrolyte exchange. This superimposes the feed movement. A pulsed current / voltage source is used to achieve accuracy and a perfect fi nish.
Principle of ECM Technology
PECM: FIVE CENTRAL BENEFITS
1 2 3 4 5
Ability to machine high-strength alloys Very low tool wear High repeat accuracy with high surface quality No burr formation No impact on the material
The process achieves maxi- mum surface quality even on complex components. In this case, the surface has been set back.
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