Until recently the only anvil in my shop was my bench vise. However I have recently acquired an anvil cut out of a short piece of railroad track. Its about 18 inches long with a horn and a flat cut on either end. I've been making knives by stock removal for a few years now but I'm just starting out in forging. Should I heat treat, or do anything else to, this anvil before I start hammering on it? Thanks for any advice.