telegraphroad

Thanks for your inputs. I do want to change the microstructure. Turning the weld metal round was to get a slip fit within the extrusion tube. Was going to use glass frit as a liner but will look at graphite. I also think I'll start with aluminum and see what happens before increasing the temperature/changing to steel alloys. Strain control could be more critical than just getting a minimal amount of work in the weld metal--I'll look for an institution that has the capability. Regards

Looking for a mechanism of removing the "as cast" structure of weld metal. Metal is cast in a water cooled copper shoe, then turned round and cut to length. Alloy is stainless steel "like" although is much harder than what most people are aware of. Have anyone tried extrusion? Zircar makes mounted ceramic extrusion dies in 0.05 inch to 1/16 inch diameter. Looking at log splitter hydraulics (30Ton) as a forming tool. Starting diameter would be about 3/8 to 1/4, about an 1 inch long. Would a power hammering and annealing sequence be an alternative? Have not found a minimill that is willing to accept such small quantities of material. Motivation is finding a thesis topic. Glad to share results/processing techniques. If I've posted incorrectly please advise. Regards,