I I know some of you guys have alot of technical experience in the machines themselves and repairing them. I am looking for a bit of that info.
I have purchesed a 1980's Lincoln Idealarc Tig 250/250 machine for a VERY good deal. It has sat for some time but was working fine when the guy stopped using it. I have it hooked up a full bottle of pure argon. It has a nice great condition air cooled torch and a nice foot pedal.
It was already labeled as to what switches need to be where for Aluminum and steel...
The machine looks almost new. It is still shiney and all cables and hoses are in good shape.
I am having some trouble with it though that I can not seem to figure out. I learned to tig on a Miller Syncrowave 350 and the flame on the torch is VERY different. I do not expect my older Lincoln to weld the same as that Miller, but the flame is so different I can not control and feel like there is something wrong.
When I start the arc it seems fine, but as soon as it starts up, then there is an orange flare around the flame. The nice fine focused white arc that I am used too seems to wander around alot and flames outward in an orange ball sort of.
It does it on steel, but I seem to be able to control it better and can weld kinda decent, but on aliminum it is uncontrolable.
Any I deas on what it may be? Like I said I learned to weld from one of the best welders I have ever seen. His welds on ANY material look like rolls of dimes. I know how to grind my tungsten, I have tried different amounts of gas, I have it set on A/C and the arc starter switch on.... everything correct. I feel like there is some internal component that is not working properly. Some transformer or circuit or solenoid not working?
Thanks for any input...