When laying beads (for notches etc) when you are welding vertically, does it matter if you weld up or down. Cuz its a helll of a lot nicer lookin and easier goin down. I'm arc welding if that matters. Thanks.
thats actually a false statement. first of all you should point the end of the electrode up and drag down. if you do this all the slag get blown away from the weld pool. it does not trap impurities or and slag underneath the weld. when welding uphill it heats up the top piece of your plate and when you get towards the top of the plate it could either blow out your material you are welding on or you could overheat the plate and it will create fractures in the plate. if you point the electrode downhill and weld downhill it will blow the slag onto the plate in front of you creating imperfections in your weld. like you described. when you start welding for a living and going to welding school at night, and get about 5 years arc welding 6 years mig welding and about a year of tig welding under your belt let me know. or i can have my teacher who is a certified weld inspector and a union pipefitter of 35 years prove you wrong. either way you can decide i just hate to see people give wrong info.alteredimage said:When welding down hill you trap slag under the weld which creates porosity and you get a weak weld.