Recent content by Old Gold

Greetings, all! I'm new here and reside in Western Washington. My primary interest is in foundry work, although I am also a retired machinist/toolmaker. I hope to learn from you folks, and would like to try to be helpful for others. Old Gold

I am not aware of that problem, although it may be unique to melting in a crucible with flame. What you had to say is true of ductile iron, however, where the window of opportunity to pour the inoculated metal is relatively short. That's not true. Nodules are not formed in gray iron, nor in...

True, that. I own a 50 Kw Ajax Magnethermic induction furnace. It's a second generation machine (motor/generator) and is fully water cooled, right down to the high frequency transformer contained within. It requires a circulation of ten gallons/minute of water not beyond 90°F for proper...