SShep71
Hot Rolled
- Joined
- Sep 17, 2014
- Location
- San Diego, Ca
I have a part that needs heat treat, I originally sent it out but it came back as the heat treater could not get to it in time. It is now on me to get the parts done in time for the hard drop-dead timeframe. The part is just shy of a 6" OD ring that is 5" long, the ID at the smallest is 4.5" The thickest cross section is 1.35". There are .1 fillets on the two internal corners to reduce the chance of cracking. I need to harden the piece to about 50hRc just on the ID of the two opposing sides. I was hoping that someone out there would have some experience with heat treating this type of material. I have one piece that is 8740, the second piece was made from 8620. The second piece is just a spare in case the first develops problems. There is .025" that needs to come off the ID to bring the part to size. So question, who has or can recommend a process to HT these parts to the appx 50hRc? I am going to be borrowing time on a local oven that is an controlled HT oven, there is oil for quenching, water for quenching if I need it.