Press Forge Welding
Press Forge Welding
(OP)
I'm having issues with press forge welding. The material is SUP9 and heated to 1050 C before pressing. I am using a hydraulic press. I have attached a picture below of the weld joint. As you can see there are three distinct gaps. Any help would be appreciated.









RE: Press Forge Welding
RE: Press Forge Welding
The material being pressed is a pipe end, OD 24.4mm, ID 16mmm. So the force required should be even lower.
These are samples of previous trials done before w/o any surface prep. I'm pretty sure the lack of surface prep caused the previous failures. I currently am ordering fluxes (anhydrous borax, silica, boric acid) to apply to the interior of the pipe during heating. About the smooth contact surfaces, I don't know how much surface prep I can do to pipe end interior.