Rotor Forging

A "general arrangement" would be a room temperature input section, followed by progressively hotter sections of appropriate size to accommodate the workpiece, and heat it per the requirements of the specific item/process to be heat treated. That would be followed by progressively cooler sections leading to a room temperature output section.

The total length of the furnace and the dimensions should be appropriate to the process.

Or, you could do it all in one chamber by controlling the temperature/duration of each step.

Hope this helps. _{I know it really won't, but I'm bored.}

"formally" - I'd never have guessed