Welding Stainless Spray Bar Question

[Waxman]

The vertical portion of my spray bar is cracked just below the gusset at the top.

I have had a friend weld stainless before for another section of spray bar assembly (not this part now leaking).

He did fix it, but it took 4 tries of thinking we had it welded properly, and reinstalling, only to find small leaks until the fourth try, which had no leaks.

My question is; is there a simple way to inspect a weld to make see if it is sealed prior to field testing under pressure?

Thanks!

 

[cleaning up mud]

We used to use die penatrant and a black light in the aviation business. That's a little extreme but it beats a wing falling off!

 

[aberaleigh]

We air check ours. Block all the nozzles and fill the spray bar with air than spray the welded area with soapy water and look for bubbles.

 

[bigleo48]

Waxman,

Had to get our spray arm welded too a few months ago. Got a professional welder (instead of my friend). Done right the 1st time in about 5 minutes...$20.

Sometimes friends are not cheaper

 

[Waxman]

Yeah. Taking it to the welding shop.

Thanks!

 

[I.B. Washincars]

What if your friend is a professional welder? Can you take it to him then?

 

[Waxman]

My friend taught himself to weld, but is a pro in that he builds custom exhausts for Yamaha XS 650's. This is his website. http://www.xs650exhaust.com/

He is out of town on vacation.

I had it welded at the local shop today. I reinstalled and it has a leak.

Bringing it back tomorrow.

 

[Mr.Aap]

My friend taught himself to weld, but is a pro in that he builds custom exhausts for Yamaha XS 650's. This is his website. http://www.xs650exhaust.com/

He is out of town on vacation.

I had it welded at the local shop today. I reinstalled and it has a leak.

Bringing it back tomorrow.

JB Weld.....

 

[MEP001]

JB Weld won't adhere to metal against pressure. It can fill a gap or serve as threads if it's not able to move, but if you try to put it on something to hold pressure in, it can handle maybe 5 PSI.