Porosity on cap with 7018 Excalibur
Ok I was at welding school the other night and done my tig root hot pass and 7018 cap then cut it and bent it and it passed. Ever since then though I kept getting porosity on the cap. My rods were not stored in an oven and are a couple months old. I bought a oven that gets to around 250deg. Can I just put my rods in there and them be ok or do I need to bake them? Here are some pics. Running 3/32 rods at around 90 to 95 amps. I think I might be moving to fast also. I am keeping a really tight arc though (REALLY TIGHT). Is there such a thing as to tight of arc? The first pics are from the un heated rods and the last two are from ones stored in oven at school. Had one area of porosity still and some undercut.
Sent from my XT901 using Tapatalk 2
Reply With Quote