Wonder if anyone has an idea of what gas post flow time should be for air-cooled torch set up, being used with a 200amp inverter, mainly on aluminuim?
TIA
Rob
- posted
19 years ago
Gas post flow aircooled TIG torch?
Loading thread data ...
- Vote on answer
- posted
19 years ago
- Vote on answer
- posted
19 years ago
Just downloaded very good Miller tech guide to TIG, and according to that, post flow gas needs to set at 1 sec, per 10amps of welding current, to prevent electrode oxidation (exactly the problem I am having).
- Vote on answer
- posted
19 years ago
Post flow is mainly to protect your tungsten. Protecting the weld puddle is secondary and only useful on Stainless steel.
I tend towards 15 to 18 seconds. The test is if you tungsten stays silver. If it turns purple then you need more post flow gas.
- Vote on answer
- posted
19 years ago
contaminated by
Thats exactly the problem I was having Ernie............will reset post flow later today, and hopefully tungsten oxidation will go away.
Rob