tigger2

Try http://inductionheatertutorial.com/ . Lots of good info about power requirements, and how to make your own. You will probably need 220v, maybe 40 or 50 amps to generate the power you need, 8KWatts to maybe 10KWatts for 1" stock, and you will need decently tight coupling to keep the power demands as low as possible, so you will wind your coil to fit your forging, plus enough room that you don't touch the coil. May want to line the coil with a layer of ceramic cloth, just to avoid contact, if your coil is very tight.