Weld through ceramic coatings??

p5.0ny · Aug 26, 2006

Does anyboby know if you can weld through ceramic coating or does it have to be ground off?

The real question is on a pair of MAC LTs. If they are bolted up to the block and I cut some 3/8" steel to bridge between the tubes and welded it, would it work? Anybody try it. I can't be the first person with the idea. Would the coating bubble and pool in the weld?

Thanks

R2D2 · Aug 26, 2006

wont work

RYC CUKR · Aug 26, 2006

coating has to be ground down. You gotta have bare metal to weld to .

bluevenom867 · Aug 27, 2006

The exhaust shop was able to weld tabs onto our ceramic coated header collecter.I was also able to weld a small aera of the pipe to flange,and the enitre header is coated inside and out.As long as the work cable is is making a good connection,I think it will work.

BlooDReigN · Aug 27, 2006

bluevenom867 said:
The exhaust shop was able to weld tabs onto our ceramic coated header collecter.I was also able to weld a small aera of the pipe to flange,and the enitre header is coated inside and out.As long as the work cable is is making a good connection,I think it will work.

I bet those are some strong welds you got there!

bluevenom867 · Aug 27, 2006

BlooDReigN said:
I bet those are some strong welds you got there!

Actualy they are,%100 penitration at the flange to pipe joint and the tabs are very secure.

fastford91 · Aug 27, 2006

i am a welder by trade and you must take the coating off before trying to weld or all youll get is a huge mess and probably a usless part!! do it right and save time and money !!!

bluevenom867 · Aug 27, 2006

fastford91 said:
i am a welder by trade and you must take the coating off before trying to weld or all youll get is a huge mess and probably a usless part!! do it right and save time and money !!!

What kinda welder did you try it on?

I used a flux core type,so perhapse most of the molten ceramic ended up in the slag?

fastford91 · Aug 28, 2006

bluevenom867 said:
What kinda welder did you try it on?

I used a flux core type,so perhapse most of the molten ceramic ended up in the slag?

ya some of your coating did end up in the slag but some of it also got mixed into the base metal creating a weak weld! i guarantee if you xrayed or ultrasound the weld it will show impurites and weak spots in the weld though not visable with the eye! they are there ! but it dosnt mean that they will break ! not yet anyway! but like i said do it right and save time and money! just a little grinding no big deal!!!

Weld through ceramic coatings??

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