In my opinion, you will need many solar panels and a controller/inverter that can handle the power draw of your equipment. To give you an example, I have (6) 300 watts 39-volt panes and ISC of 9-amps per panel. I have them configured as three branches and each branch consists of 2 panels in series. This is in the theory of course under ideal conditions. I get on the average 65 to 70-volts on most days here in California and could in theory get ISC (of 27-amps) but have never reached that due to the location of my panels from my controller and force to use different lengths of cable (cord) to my controller.
With respect to my MPPT all-in-one PIP-2424lv-MDS controller/inverter, it is rated for 2300 watts. But it doesn't like my microwave pulling 1800 watts or the clothes washer and dryer. (I'm running 120Vac with this system.
The point I'm getting at is you would need, in my opinion, a much bigger controller/inverter or multiple controllers in parallel with many more pannels than what I am using just to run the Tig and MIG welders for example.
In my experience in the very long past using a Tig and a Mig welder, would dem my lights and everything else in the shop when plugged into the utility company grid.
However, don't get discouraged based on my newbie experience, there are a lot of guys in this forum that are really smart dudes in this solar stuff.