Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by mchidester

  1. mchidester

    17-4 H900 Questions

    So in working with the foundry to try and figure out how they are treating the parts, this was their response. Keep in mind, they are overseas and communication can be difficult. "The workpieces are heated in the vaccuum furnace at 1900°F, without anneal, cooling down naturally, and the...
  2. mchidester

    17-4 H900 Questions

    Ok, so I think I have figured out the issue, and it is a material problem. I have 3 different parts I am working with. 1 comes from one vendor and 2 from another. All 3 prints call out the same material (ASTM A747 TYPE CB7Cu-1 SOLUTION ANNEALED OR ASTM A564 UNS S17400 TYPE 630 SOLUTION...
  3. mchidester

    17-4 H900 Questions

    Ed, So it sounds to me like you are saying that my process looks correct, which would leave the only other cause of the bad results to be a material issue? I ask that question because I am trying my best to rule out process issues on my side before starting to go down the material rabbit...
  4. mchidester

    17-4 H900 Questions

    Yes, all thermocouples are new and calibrated.
  5. mchidester

    17-4 H900 Questions

    Thanks everyone for all of the information up to this point. I got pulled off of working on this with a bunch of other stuff going on. I have done more testing and I am still not getting good results. I have been using the following process. - Place part in oven at around 500F and attach...
  6. mchidester

    17-4 H900 Questions

    MagBen, Yes, the temp is reading in F. I don't have the ability here to solution anneal (oven only goes to 1000F), so any parts that come out bad are just scrap (which I am ok with as we are just in the testing phase). I did try fan cooling the last batch with no change. bobjustbob, I have...
  7. mchidester

    17-4 H900 Questions

    Hello All, I work for a manufacturing company and we are currently looking at the feasibility to bringing out heat treat processes in house to reduce cost and lead time for the parts. We have an oven that use for a different purpose and I have done some testing in that oven with mixed results...
See more

Part and Inventory Search

Back
Top