Hello I have not used ecm myself, i use edm a lot. I've seen ecm machines working on blisks at factories working for engine manufacturers
I know about high current discharges, but ecm is different. edm is efficient up to 4"^2 work area at up to 350/400 amperes, ecm can handle much larger areas and much larger currents the gap control strategies are similar from what i've read theres not a lot of info for DIY this may be of use (old US gov work at MIT ) http://www.dtic.mil/dtic/tr/fulltext/u2/659004.pdf and I'd suggest beginning with a used machine and viewing running machines if you can get a scope on one it would be really help your understanding from academia ( yes you have to sign up but they havent been a spammer for me ) http://www.academia.edu/1407899/Development_of_Electrochemical_Micromachining_Table_Top_Machine_Set_Up in the paper he does document a small avr based ecm machine (stepper driven, 555 pulse timing... ), so its not a commercial quality but a good beginner system example the actual docs and prints or a commercial machine may be very hard to get, and very hard to interpret. all manufactures directly or indirectly obfuscate the how-to part. their intent was never to let you build your own ;-) a service man from emag could tell you a lot! http://www.emag.com/technologies/ecm-electro-chemical-machining.html regards tomp tjtr33 . a On 01/25/17 05:35, Peter Weuta wrote: > Dear all, > > I did follow the interesting discussion about retrofitting EDM machines > closely.... . > > Is there anybody out there having experience with retrofitting of ECM > machines (Electrochemical Maching) ? > This processing technology does seem to be alot less common compared to > EDM, some basics of the process are mentioned here: > https://en.wikipedia.org/wiki/Electrochemical_machining > http://electrochemicalmachining.com/technology/process-overview > > Compared to EDM there are quite some advantages: > - very low surface roughness achievable > - no recast layer or heat affected zone > Therefore a nice technology to process advanced alloys as for example > Inconel 718 or alike.... . > > We are developing high performance gas turbines. In order to keep BLISK > (/Blade on a disc/) manufacturing in house we are planning to acquire > and retrofit an ECM machine. > My questions: > - has this been done by anybody on this list so far ? > - any recommondation concerning potential machines to choose from ? > (Machines should have an obsolete control system in order to follow the > usual justification for conducting a retrofit.) > - an alternative might be using an EBM machine as the basis and > converting this to ECM. However this would involve quite significant > modifications in the field of electrolyte processing, gas cleaning and > safety issues (H2 is formed during the process) > > > > Thanks alot for your comments in advance + Best Regards, > Peter > > Am 14.01.2017 um 11:58 schrieb Nicklas Karlsson: >> It would be good with links like this on the linuxcnc home page and of >> course even better with files themselves if there are no copyright >> restrictions. >> >> I have attachad a pdf-file which is interesting. >> >> On Sat, 14 Jan 2017 09:08:03 +0700 >> TJoseph Powderly <[email protected]> wrote: >> >>> Nicklas, Sarah and all interested in EDM >>> i found this resource >>> unlike most tech sites , the papers are free :-) >>> http://www.sciencedirect.com/science/journal/22128271/42/supp/C >>> regards, tomp tjtr33 >>> >>> btw: lots more than edm here! >>> >>> ------------------------------------------------------------------------------ >>> Developer Access Program for Intel Xeon Phi Processors >>> Access to Intel Xeon Phi processor-based developer platforms. >>> With one year of Intel Parallel Studio XE. >>> Training and support from Colfax. >>> Order your platform today. http://sdm.link/xeonphi >>> _______________________________________________ >>> Emc-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >>> ------------------------------------------------------------------------------ >>> Developer Access Program for Intel Xeon Phi Processors >>> Access to Intel Xeon Phi processor-based developer platforms. >>> With one year of Intel Parallel Studio XE. >>> Training and support from Colfax. >>> Order your platform today. http://sdm.link/xeonphi >>> >>> >>> _______________________________________________ >>> Emc-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
