Help with RAM material removal rate?

Question

I'm using a ram EDM with the following settings: on time is 40us, off time is 60us frequency is 10kHz and the amperage is 50 A. What material removal rate in cubic inches per hour should I get

Answer 1

Depends on what material you are using and what size and shape of hole you are making.  Different materials have different characteristics and so will "cut" at different rates.  The size of the hole is more complicated.  The surface area of the tool in contact with the work piece will have an effect on the erosion rate.  If the removal rate of the ram material is the same as the removal rate of the work piece, you will go thru a lot of electrodes.

Answer 2

Browse:

http://www.fs.uni-lj.si/lat/edm/index.ht...

http://www.makino.com/about/article/0/RA...