How to do TIG Welding Cast Aluminum, TIG ACDC 201 By CANAWELD PART 2

Cast Aluminum welding tutorial video from Canaweld!

Equipment used in this video: TIG AC/DC 201

The TIG AC/DC 201 Pulse is a portable, powerful and versatile welding machine. This unit is capable of either AC or DC TIG welding (stainless, mild steel and aluminum) or SMAW Stick welding. The professional pulse features of the machine combined with its HF start, make it ideal for welders looking to perform high-quality TIG welds with no distortion for even very thin steel alloys or aluminum.

CONNECT with CANAWELD:

[robertweeks]

A carbide burr on a die grinder will be a big help to remove the crud and make a decent groove to fill.That big piece of cast needs lots of heat all over as the heat is drawn away from the weld by the cooler metal.After grinding and cleaned with acetone give it a good SS wire brushing.
I use an old oven to preheat and post heat.Tack it together then pull it apart then clamp it on flat material to keep it in alignment, preheat again before finish welding will help also.
This is how I do it on used motorcycle heads and they look pretty good when finished.
Cast is hard to get the contaminants out from years of service.
Nice to see you are honest and did some research Nick.

[robertthomasson]

Just because you have a camera and can make a video doesn’t mean you should. Canaweld was on my shortlist of welding machines but no longer.

[mmck]

Hi Nick, You have picked a difficult repair. Did you mention filler rod? I usually use 4043 for cast. Jody Collier at Tips and Tricks has suggested 4047. It's higher silicon content helps it flow and reduces shrinkage. I would also suggest a foot pedal so you have better control of heat.

[garypostell]

Weld it grind it weld it again until a clean weld !

[garypostell]

No time to groove the cracks with a carbide bit ?

[margaritajanes]

I know it is more trouble, but why not disassemble the cracked part and work on it separate from the guts of the pump? Easier to clean dirt out of the crevices, as well as able to weld INSIDE the part also?

[garypostell]

You should wear rubber gloves with that acetone!

[margaritajanes]

Ah! since this cracking happens frequently, consider taking a NEW pump and laying bead in the usual crack zone to reinforce it and prevent cracking?

[garypostell]

Maybe a heat gun to preheat just a thought!

[garypostell]

Really looks like Fido’s butt very disappointed!