|What is this?|
I've done all of the welding on my tractor with a tiny little TIG welder. It puts out just barely enough heat to weld 1/4" steel. It takes about a minute to make an inch of weld with it. I was using TIG on the advise of an experienced machinist (my instructor).
This week I switched to MIG at the suggestion of another fabricator. I could weld at about a foot a minute with this (much more powerful) machine. That is a speed increase of 12 times. I'm very proud to say that I finished all the welding on the Hydraulic tank (see above)! I need to do a leak test as quality control, but I may be ready to move to the next component.
Note: While MIG is faster, it's more likely to leave voids. With the TIG I could probably have made the tank leak free on the first try. With MIG I expect to have to make some (quick) patches. I took some pictures of the welds to show the difference in quality.
|TIG - Smooth finish, lots of control, slow|
|MIG - Lots more material, some spatter, fast|