Hard facing with Tig

[northwest]

As is usual with the type and style of welding I like to do, I need to hard face a few small components. What sort of wire is available for Tig hardfacing?
I know I can get Hardox rods for MMA hard facing but the rod would only need to strike once and that will fry the sort of size of the parts I typically work on.

This is often the type of repair I do and often a very hard material would be best, before:



The missing piece is 2mm x .9mm approx. After:

 

[123hotchef]

is that a pistol barrel

 

[Brad93]

Usually they're cobalt Alloys like
Stellite.

I've used stoody 6. Some Manufacturers do a metal cored TIG wire.

what sort of hardness do you need? Abrasion or impact resistance?

 

[northwest]

is that a pistol barrel

No.

 

[Brad93]

I mean you could always use a tool steel alloy like P20 but I don't know if cracking would be an issue

 

[northwest]

what sort of hardness do you need? Abrasion or impact resistance?

On the trigger sears definitely abrasion but on breeches it would be impact to take the slamming shut forces. Don't get me wrong, what I am doing now is really good and miles ahead of anyone else but I know there are better materials out there.

 

[Brad93]

On the trigger sears definitely abrasion but on breeches it would be impact to take the slamming shut forces. Don't get me wrong, what I am doing now is really good and miles ahead of anyone else but I know there are better materials out there.

I think you'd need to speak to @TechnicAl

 

[northwest]

He will be along shortly I am sure. Meanwhile looking through ebay I have come across this: https://www.ebay.co.uk/itm/223982363920
Flux cored Hard facing wire that you can use with Tig? Surely not?

 

[Brad93]

He will be along shortly I am sure. Meanwhile looking through ebay I have come across this: https://www.ebay.co.uk/itm/223982363920
Flux cored Hard facing wire that you can use with Tig? Surely not?

Yeah that's the stuff. Metal cored. Not flux cored usually. Flux won't do anything in a TIG arc

 

[northwest]

Yeah that's the stuff. Metal cored. Not flux cored usually. Flux won't do anything in a TIG arc

I get that Brad, flux cored is less than useless in Tig. Do you think he has confused the core (metal) with flux? I am going to take a punt and see what it is.

 

[Brad93]

I get that Brad, flux cored is less than useless in Tig. Do you think he has confused the core (metal) with flux? I am going to take a punt and see what it is.

I think so mate

 

[Rrobson]

As above, cobalt alloys are the material of choice. Excellent corrosion and abrasion resistance and very hard.

 

[hotponyshoes]

I get that Brad, flux cored is less than useless in Tig. Do you think he has confused the core (metal) with flux? I am going to take a punt and see what it is.

The seller is talking about not needing gas and being able to use it outside

Also looking at how it's coiled up I reckon it is actually flux core mig wire that he is breaking down off the big spools.

In fact I'm pretty sure it's this stuff:

Self shielded cored wire. Features and benefits Dual primary carbides resistant to abrasion, erosion with moderate impact up to 450°C. Ready formation of stress relief cracks. Dual pass capability for optimum properties. Few slag residues save weld c

Self shielded cored wire. Features and benefits Dual primary carbides resistant to abrasion, erosion with moderate impact up to 450°C. Ready formation of stress relief cracks. Dual pass capability for optimum properties. Few slag residues save weld cleaning time. Deposits are grindable and rust...

www.castolin.com

I had a load of mig wire that I listed on ebay and I think that's the chap who bought a load of the more unusual stuff from me including several rolls of the stuff above.

 

[northwest]

He also talks about it being useable in the Tig process, can't see that happening if it is flux cored. If you could shed any light on that I would be grateful. Also, don't suppose you have any 1 or 1.6mm stellite or Cobalt wire? (worth an ask).

 

[Brad93]

He also talks about it being useable in the Tig process, can't see that happening if it is flux cored. If you could shed any light on that I would be grateful. Also, don't suppose you have any 1 or 1.6mm stellite or Cobalt wire? (worth an ask).

You won't find much stellite in 1.0mm, it's too hard to draw down. It will be beyond expensive.

flux in a TIG pool just floats to the surface and you out barely any
Metal down because it's mostly flux you can't feed 12m/min

 

[hotponyshoes]

He also talks about it being useable in the Tig process, can't see that happening if it is flux cored. If you could shed any light on that I would be grateful. Also, don't suppose you have any 1 or 1.6mm stellite or Cobalt wire? (worth an ask).

If it's the same guy he had some of this from me as well

WARod | TIG Welding Rods

Fux cored filler rods for TIG welding. Designed for root pass welding where gas purging is impractical. Slag to protect the reverse side of the root pass. Perfectly suited for stainless steel pipe welding

www.welding-alloys.com

That might be were he has got the idea you can use fluxcored for tig.
Or maybe you can use fluxcored for tig?
Not something I have ever tried.
I would think you would still need gas to cool/protect the tungstan?

 

[hotponyshoes]

Also, don't suppose you have any 1 or 1.6mm stellite or Cobalt wire? (worth an ask).

I think 1.2mm was the smallest size in any of it.
I will have a look as there might be some 1.6?

 

[Kram]

Same seller has this listed with almost identical description, so it does appear to be mig flux wire, Esab Tubrodur 15.43
www.ebay.co.uk/itm/223500358220

Maybe this one?
www.ebay.co.uk/itm/302847189447

 

[Brad93]

I can tell you right now flux cored wire does not work for TIG.

Metal cored kind of works. But you still barely put any metal down

 

[northwest]

On the breech you would need to add in the pressure curve into the equation if it is being fired.

I get what you are saying but this is not anything for pressure bearing parts, not in the way you are thinking. You can't just weld a breech up. Not unless you want to see some very interesting (dangerous) results. It's not really hard to work out where and how you can facilitate a repair.