Shield Arc said:Here is the others I did. I didn't catch the amps on some of these, the Invertec only holds the amp reading for a few seconds and I always forget to look!http://imageshack.us/photo/my-images/35/mur.gif/
You hit the nail in the head Al. I am a level 2 UT, my job sent me for a one week school a long time ago through a company called Lucious Pitkin, and I passed all my tests and got certified, but do you want to talk about mass confusion, I left there dumbfounded, like what the heck did I just learn. This instructor couldnt prove anything on either end of anything.
Sadly only the second photo appears to have good fusion to the base metals. Running too cold with MIG and trying to get that fish scale look may look cool, but you run a very high probability of getting cold lap between those scales and non fusion on the sides which the other 3 photos show distinctly on the top edge more prominently than anywhere else.I never had much trouble getting that " fishscale" look. It is all in the type of weave you use. The >>> look is probabally just from a typical u shaped or z-weave. You can run the amps hotter and still get the "tig" look if you do the lower case e pattern. The problem is doing it SOOO consistantly.
Here is a pics of some I just did. Miller 350P welder and .035 wire. Volts @ 15.8 and wire @ 160 FPM. This was 1/8" cold roll. And I too feel it isnt hot enough. I tried it colder and slower as per suggestions here. I normally would have welded this somewhere around 18.5V and 200-230 FPM.
The second pic is the same size metal, only set up to pulse. Wire speed @ 280. (there is no voltage/amperage adjustment on pulsed). This is about 2x's to 3x's faster travel speed than short curcuit welds.:thumbsup: And **** strong too.
The last two pics was a little TIG'ing on some stainless. Welding 1/4" bar to 14ga sheet for a guard.
Sadly only the second photo appears to have good fusion to the base metals. Running too cold with MIG and trying to get that fish scale look may look cool, but you run a very high probability of getting cold lap between those scales and non fusion on the sides which the other 3 photos show distinctly on the top edge more prominently than anywhere else.
Welds in general and TIG welds especially should be rather slightly concave , to flat with sides tied in well to the base metal when joining plate rather than convex.