Day 2: Lincoln Electric’s GTAW (TIG) welding class

Day 2 was all about stainless. We began the day at 8am with approximately 90 minutes of lecture. We started with some basic metallurgy and went over the different families of stainless. We then talked about some of its physical characteristics and really focused on its thermal conductivity and why stainless wraps the way it does. Then we went into machine settings and techniques. Pulse was introduced and we were encouraged to experiment with high frequency pulse to reduce heat input and (hopefully) warpage. A little Q&A and then we were off and running. Bob cruised around all of the booths and did some demos for us. But really, it’s been all about booth time. I’ve been skipping lunch and staying late. The six straight hours of uninterrupted practice has been fantastic. Here are some photos. Please be kind. With only a tiny bit (maybe an hour total) of previous experience, these are some of my first attempts at welding of any kind. The entire album can be seen HERE.

The booth.

Lincoln InvertecV205-T

16 gauge carbon steel butt welds

16 gauge carbon steel T joint

16 gauge stainless butt weld

stainless T joint

my first tubing sample attempt

There’s a lot of photos showing a ton of nasty welds in that gallery link I posted above. Fun stuff.

Thanks for reading!

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