O/T Edming Stainless

[KJS]

I was wondering if anyone out there has any experience with edming stainless steel. This would be with a sinker edm. Any help would be great!

[Müřlıń®]

you mean using SS electrodes??

 

Hrmmm I have used copper, graphite, carbide, and even bolted the top and bottom molds to the plattens and EDMed the final fit of the PL.

 

Your control on your EDM just has to be able to use metallic electrodes.

 

You can prol use just about anything conductive to use as an electrode but how effecient it is is another story.

 

If you are just talking about EDMing a SS workpiece, then it will be no diffrent than any other metal workpiece.

 

 

Murlin

 

[ 10-29-2003, 09:42 AM: Message edited by: Murlin ]

[KJS]

Murlin, Thanks for your feedback. The workpiece is stainless and I'd like to use a graphite electrode if possible. I'm just burning a clearence hole through it but it isn't burning well at all.

[crazy^millman]

What is your gap set at on your spark. What is your contration on your Dielectric soultion. Its been over 10 years ago but if I rmemeber correct you need to apporach it like aluminum in that is burns funny. I would go to the extreme high or the extreme low and see what that does also I believe if the gap was to little is would give a fit also sorry I cant be of more help been a few years and that book I dont have any more.

 

Crazy Millman loves the smeel of burning dielectic solution in the morning taste real good too when it pops up in your mouth.

[Keith Graydon]

You must remember that Stainless is a REALLY BAD conductor of both heat and current.

 

[ 10-29-2003, 10:15 AM: Message edited by: Keith Graydon ]

[Kevangel]

If a burn is not going well, # flush, flush,flush(need good flushing) sometimes even less amps will actually burn better and putting an AM radio next to edm you can hear burn better by listening to static.

[Müřlıń®]

quote:

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If a burn is not going well, # flush, flush,flush

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We use to listen to our burns in the next room with a raido also Get that steady schreeching sound and you better get in there cause it's arcing like a big dog!!!

 

I can tell you are an old head when I comes to the EDM:)

 

+1 to MIll....heh, I have burned with fluid that looks like mud its all in the settings.

Crank down the off time and crank up the on time.

be sure to use plenty of flush holes.

 

All of the considerations have to be made "Before" you make yoiur electrodes.

 

You want to get that plating effect on graphite to minimize wear.

 

Muddy oil just means you need more flush.

 

If you are getting a dirty spot on your burn, drill a flush hole in there.

 

Its all in the settings......I am making a CNC plasma torch out of my edm frame. it has ballbearing round ways with ball lead screws.

42"x33"x15" tank.

 

I have an old 120 amp ss power supply I will give away if anyone wants it.... I even have all the wiring diagrams for it.

 

 

Murlin

[Lars Christensen]

Sounds like flush to me, flush is your best friend in edm, but remeber high presure is not, just want the paticalers out of the way.

 

Lars

[KJS]

Thanks for all your help. I got it to go with alot of fine tuning on the settings.