Welding thick 4130 parts requires a preheat in order to prevent hard brittle areas. ER70 filler wire was used.
The basic settings are 100-140 amps using foot pedal so basically what that mean is at times I am at 140 amps but also much lower when heat soaks the small practice piece.
i used nearly 140 amps but when the aluminum gets soaked with heat, I used the foot pedal to use less amperage.
AC balance ...
If you have ever walked a 55 gallon drum across a shop floor, you understand how it works.
In this video I found some scrap pieces of 303 free machining stainless and chucked then up in a turntable and made a multipass weld walking the cup.
For a total of 7 passes.
I brought you along for t...
Science might say no but after a period of non use, rolling the tank sure seems to help the arc smooth out.
When you Mig weld after a long period of non use. It seems to help to roll the tank
