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  1. stillcrazy

    Filler wire for touching up thin walled 4340 EB welds?

    My firm produces a weldment made of 4340 steel that is EB welded at an outside vendor. At times post weld machining does not fully clean up the weld zone. I would like some info on the correct filler to use for touching up the affected area. The wall thickness is approx. .100 thick. These are...
  2. stillcrazy

    Weld repair 4340

    I'm trying to formulate a repair procedure for a part that has been EB welded. This isn't a weld integrity issue as much as it is cosmetic. Post machining of the weld area occasionally doesn't clean up the weld completely. I would like to fill in the pitts with a GTAW process and wonder about a...
  3. stillcrazy

    Stress relieve 17-4PH

    metengr, I think what happened here was that the powers to be believed that machining stresses were present after the rough operations. That may or may not be true. However, a short soak like the one described seems tantamount to tickling a rhino with a feather. Does it really do what they want...
  4. stillcrazy

    Stress relieve 17-4PH

    We're bringing in forged rings of 17-4 that are at condition 1150. After two rough machining operations, we stress relieve them at 1135-1165 for 2 hours. I'm not sure if this is doing anything useful except paying for my heat treaters new boat. Anybody got a suggestion?

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