I work with Edison Welding Institute in Columbus, OH. We have done significant work with flash butt welding. I tried to forward your post to one of my collegues but something went wrong with the e-mail process.
If you would like some more information you should e-mail Tim Stotler. Tim_Stotler@ewi.org
He would be happy to answer any questions you may have regarding this application. [sig][/sig]