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  1. Greg Mercurio

    Fracture Free Forming

    All: The bends are all 90 degrees, we have successfully bent both with and across the grain as our nesting program for the router ignores grain for maximum part density. We are bending some domestic plate today in both directions for comparison. The radius I have stated thus far in this post...
  2. Greg Mercurio

    Fracture Free Forming

    metengr and btrueblood: The parts are not structural to the extent that the H32 is required. We could easily accommodate the H0 temper. Thanks for the tip. As to the pin dia and missing data, we're being told by the supplier that the lack of N data means it can't be formed. I laughed out...
  3. Greg Mercurio

    Fracture Free Forming

    IRstuff and mrfailure: For reference, we are a small fabrication facility, and tooling for the press brake is limited, as are the opportunities for "process improvement". Having 40+ years of manufacturing behind me including 10+ building aerospace structures for solid rockets give me a fairly...
  4. Greg Mercurio

    Fracture Free Forming

    We are going to see if we can get the Montana State University Materials Department interested in a cooperative project. Two of our engineers are grads, still have contacts, so we might be able to help the students with some real world situations, while we get some definitive answers. Win-Win...
  5. Greg Mercurio

    Fracture Free Forming

    Appreciated. We will try to do that but here in the wilds of NW Montana, met-labs are few and far between. :-)
  6. Greg Mercurio

    Fracture Free Forming

    Good morning: I have a problem that requires expertise not available locally. We are experiencing moderate to severe fracturing of 0.250 inch 5052-H32 plate during forming. We are using a CNC press brake with a .375R forming die. We have successfully formed this plate hundreds of times in...

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