H2 sounds interesting, you should it well ventilated or combusted as soon as possible to avoid an explosion? Or maybe both, open light and good ventilation? To avoid sparcs is also a solution but it have a catastrophic failure mode.
It is most often used for circuit boards. But how do they do here, a fluid jet? 2017-01-25 2:43 GMT+01:00 TJoseph Powderly <[email protected]>: > 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 > ------------------------------------------------------------------------------ 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
