In a message dated 1/5/03 12:53:05 PM Central Standard Time,
john.szalay@worldnet.att.net writes:
<<
>Cranked the argon up to 18 cfm. My
>instruction book says that is the right range.
I never went over 10 cfm. the high flow rates tend to pull air into
the weld area if you tilt the torch.
>>
John makes a very good point on to high a flow rates, it will draw air in the
weld zone. I remember years ago welding at a nuke plant on carbon steel pipe
and was getting porosity in some of the welds using a small cup about a 4 or
5. An old welder said to try and turn down the gas flow and see what happens,
he was right on the money no more problems. They make what is called a gas
lens which gives better coverage but I never used them much but some people
swear by them. Larry Mac
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