Monday, 18 January 2010

Selecting a welder - TIG vs MIG

Since attending the welding evening class, I've been saving up for my own welding machine. To help make a decision, I've been reading a variety of books such as Performance Welding

I also found a video from Andy Fogarty the At Home Welder @HomeWelder which explains some of the key differences.



Summary











 MIG (GMAW)TIG (TMAW)
SpeedFasterSlower
Ease of useEasierHarder
Initial CostLowerHigher
PrecisionLowerHigher
SpatterYesNo
Gas?Flux core wire can be used insteadGas always needed
Post weld cleanupOnly needed with gaslessNot needed
Filler material?AlwaysOptional
Thermal distortionHigherLower
Cold startsYesNo
Typical useGarage or workshopBench

1 comments:

Andy from Workshopshed said...

Additional comment from a couple of sources is:

"The wire used in MIG cools harder than in TIG welding, making it harder to hammer and dolly the weld afterwards" as the MIG weld would be more brittle/

Ref: Classic Concepts

Workshop Practice Series