I must say, all these comments remind me of some tips from my first girlfriend in college.....hotter, slow it down, work the edges, move that up rather than down...etc, etc....
I must say, all these comments remind me of some tips from my first girlfriend in college.....hotter, slow it down, work the edges, move that up rather than down...etc, etc....
So these noted areas aren't porous or contaminated?
Also, I agree that your newest weld looks a bit convex, thus 'cold' looking. However, it is looking much more like a proper MIG weld. Keep it up.
Edit: I too, get better results from vert up MIG. Just remember to account for lesser penetration, due to the faster travel speed. When going vert up, I like to weave ("V's " really) a little bit, too.
Porous, I don't think so...the spots are ground out now, but I don't recall cavities. I don't recall visible holes or anything that looked like an air pocket. I have had those in my welds before and take them out with a grinder. But, what do you mean by inclusions?
I am not trying to parse words and am really asking for feedback. If you see porosity or the tell tale signs of contaiminates....do tell. I am trying my best to only weld over a ground down surface...fresh metal.
I would add, although I am not a professional or even a "good" welder that you can tell something about you welds by the sound. I try for the "frying bacon" approach.
The only time time a good welder runs wire downhill is on non-structural light guage fab jobs. It's always uphill, and one of the few times I push my weld. There is a technique of doing this where you run your arc faster across the root of the weld, and pause to let it cool before starting another pass across the face.
I like to pull my welds. One of the advantages of pulling your weld is you can see your work as your welding. The purpose of oscillating your weld is to pre-heat the material in front of the weld pool for better penetration. This is tough to do when pushing your weld. There are times when I push my weld though. An example would be certain light guage welding jobs, especially aluminum wire welding.
