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I'm new to tig welding. I bought a multimatic 200. Learned a few tricks from some people and some settings. The question I have is about the argon post flow. The gas flows for approx. 8-10 seconds after the arc is finished. Is this correct and is there a way to change it? It seems longer than necessary. Any help?
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Definitely too long. I reckon it should be around 2-3 seconds. Best to consult the owner's manual.HTP Invertig221 D.V. Water-cooled
HTP Pro Pulse 300 MIG
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Welcome to the forum.Lincoln A/C 225
Everlast PA200Comment
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1 second per every 10 amps
Typical rule of thumb on TIG Argon postflow is 1 second per every 10 amps of welding current...Originally posted by the family forge View Post
a few seconds more than your intuition may tell you will help to give you a sound shiny bead.. gas flow is measured in Cubic Feet per HOUR... so... it really is not as much as you may think..
Being a gas mizer could be a very poor trade against weld quality...
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My bad, I was thinking MIG, not TIG, didn't see that part, lol.
8-10 might be excessive depending on the amperage, but also depending on the part. the 1-second-for-every-10A rule is not adhered to by everyone, I know I don't use it if I'm doing anything with mild steel that is "sufficiently" thick. If I'm near 100A, I might go 5-6 seconds if the part can wick away the heat on it's own from the thickness of the joint. If you're welding at 200A, the part you are welding is likely thick and heavy which acts as a natural heat-sink----you won't necessarily need 20 seconds of postflow, especially if it is just plain ol' mild carbon steel. Stainless steel is a different story, as well as other reactive metals.HTP Invertig221 D.V. Water-cooled
HTP Pro Pulse 300 MIG
HTP Pro Pulse 200 MIG x2
HTP Pro Pulse 220 MTS
HTP Inverarc 200 TLP water cooled
HTP Microcut 875SCComment
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post flow?
The longer post flow is for protecting the tungsten as it cools. Higher amps = longer cooling timeComment
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I don't think you can adjust post flow on the Multimatic.Ed Conley
http://www.screamingbroccoli.net/
MM252
MM211
Passport Plus w/Spool Gun
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You can call me BacchusComment
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The post flow on the Multimatic 200 is automatically set 1 second for every 10 amps. It has a minimum of 8 seconds and a maximum of 15 seconds.Kevin Schuh
Service Technician
Miller Electric Mfg. Co.Comment
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