This GunTec presentation covers the process of annealing, or softening, casehardened parts so that they can be polished prior to the finishing process. Larry Potterfield, CEO and Founder of MidwayUSA, starts this process by packing each part inside a metal canister, also referred to as a crucible. The parts are covered with charcoal to prevent scaling as they cool. Once the canister is full, it is placed inside the furnace which is heated to 1500 degrees F. The parts are held at that temperature for two hours and then allowed to cool.
Yes, you would have to re-harden anything that is meant to be hard. Annealing puts metal into its softest state and at 1500 degrees for two hours, the entire piece will be annealed.
this only “softens” the steel enough to be able to polish it because otherwise it’s Too hard. you really have to know what you’re doing to Anneal properly.
Don’t you have to re-harden them?