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Q. I have a Miller Dialarc HF TIG welder and I have been welding 4130 tubing, and now I want to weld .063 Aluminum. Can you tell me the right machine setting for welding Aluminum? (Submitted by: Danny Sutton from unknown)
A. You should use your Dialarc on the AC setting with the H.F. switch in the continuous mode. Set your amperage based on material thickness. Example: 1/8th is equal to .125 inch thickness. Start your amperage above 125 amps. I would go about 150 and use the foot pedal to fine-control amperage. For .063, start your amperage around 80 or so.
Use a green tungsten and make sure the tungsten size is large enough to handle the amperage. If you experience an excessive amount of "balling" at the tungsten, use a larger size. For .063, a 1/16th tungsten should be ok.
Good luck.
A. You should use your Dialarc on the AC setting with the H.F. switch in the continuous mode. Set your amperage based on material thickness. Example: 1/8th is equal to .125 inch thickness. Start your amperage above 125 amps. I would go about 150 and use the foot pedal to fine-control amperage. For .063, start your amperage around 80 or so.
Use a green tungsten and make sure the tungsten size is large enough to handle the amperage. If you experience an excessive amount of "balling" at the tungsten, use a larger size. For .063, a 1/16th tungsten should be ok.
Good luck.