How to weld 6G Copper Nickel Pipe Test Guide for Navy Shipyards

This is a guide to help someone prepare for the copper nickel 6g pipe test 90/10 with 1/16 RN67 filler wire.

[@amossnowdaharleyman9179]

I was a Machinist Mate 1st Class in the Navy and on my last ship I stick welded on 600PSI steam lines for repair and valve change outs. The Hull Techs (welders) kept saying they weren't "qualified" and once I showed the Chief Engineer (full Commander) that I could do it he relegated all of that to me. Never did figure out why the HT's refused to do it. My welds never failed btw and passed closer inspection when we had yard repairs and refits.

[@belalangbambu6453]

I am welder SMAW/GMAW,, i'm from indonesian,, salam persaudaraan welder. Semoga kita semua di berikan kesehatan dan rezkih dengan penuh berkah,🙏🙏🙏

[@marvinharms1891]

Good stuff man. That's the way it's done here on my side of the world. S Africa that is. Cunifer will keep you on your toes. Before you know it- its role up time!

[@mikemcclune1440]

Interesting video, never saw or dealt with that type of material before myself. I like how you show mistakes when they occur and ways to correct them when they happen.

[@johnbrennan203]

Here in the UK we weld CU/Ni alloys with mix gas of either 2.5% Hydrogen 97.5% Argon or for heavy wall 70/30 CU/NI or for Monel alloys try 5% Hydrogen 95% Argon the hotter arc and cleaning from the hydrogen reaĺly make a big difference

[@michaelsays7131]

yeah i agree, i actually weld alot of 70/30 CuNi and i prefer to weld it with 95/5 Ar/Hydrogen..i find that with that hot gas mixture the puddle runs alot like stainless. very active and watery puddle, it also just weld much cleaner with 95/5..

[@MegaBoilermaker]

Also used a similar mix for Duplex Stainless.

[@MegaBoilermaker]

@@djyul Did not find pure Argon all that good for heavy wall Duplex pipework, a small percentage of Hydrogen improved weld puddle fluidity when using semi-auto TIG but that was 40 years ago..

[@OminousObelisk]

@@MegaBoilermaker hydrogen and duplex doesn't mix actually. The water content in the hydrogen can cause pit corrosion/pitting and eventually pipe rot. You don't want that 😜

[@MegaBoilermaker]

@@OminousObelisk Was the Welding Engineer on a heavy wall Duplex sour gas pipeline over 40 years ago, not much written research to go on at the time.

[@ubaldoalfaro6670]

KEEP IT COMMING VERRY HELPFUL

[@WELDorDIE]

we will. thank you!!

[@chrisrios435]

Man I never seen something so dirty, that is difficult

[@okiedoke6373]

Oh I was just waiting around for the Bend part

[@koshjosak]

I weld a ton of this stuff. Have you ever tried the RN60 Copper Nickel wire? Far superior to the RN67 in my opinion. Runs much cleaner and less dead.

[@daskiier]

I think rn67 welds much better than rn60. Though we only usually use rn60 for cuni to carbon

[@Grady0783]

RN 60 is for CUNI to HY 80 (Hardened carbon steel)

[@deckum23]

We had 2 types when I was in, we called one copper-nickel, and the other nickel-copper, and the difference was that nickel-copper had a higher nickel concentration.

[@moiseslopez2462]

What wire did you use for root ? 332?

[@STRYKER7191]

Im having difficulty in the overhead. Everything from suck back to undercut.

[@Aint1S]

That's a great video and that puddle... Very misleading to work with when you don't know to feel for that drop. Thanks for posting! I was aboard CG-48 in Bender Shipyard several years ago.

[@kez0o9]

great content stainless one was good new one on me .onley been at it 32 years thou)

[@alexanderesquivel4703]

No se les plbide cuanto amperio cuantos batios en cada cordon el amperage esplisuelo por fabor y disculpe

[@andycrawl2128]

Thanks guys. Great video.

[@hoodlums5149]

What filler metal you use????

[@kenneyminter2023]

Does it run a lot like inconel? Looks like it at least.

[@Ben-ro4gc]

Which Navy yard does it this way?

[@mirfan147]

How much power root pas and caping pas

[@patrickfarley8036]

Where would this be used? I'm very use to seeing pipe being back filled so the root has a more cap like appearance on the inner diameter as opposed to a sort of groove look such as this joint has. Thanks very much sharing your knowlegde! God bless!

[@zakhamilton8096]

They are used in a lot of marine piping systems. This is because it resists saltwater corrosion.

[@patrickfarley8036]

@@zakhamilton8096 gotcha! Thanks alot!

[@echoserenade]

Whats the best way to cut the arc on the cap to prevent pin?

[@MrVegasTube]

Great video on cu ni.

[@alfredflores1278]

No back feed for the bottom?

[@bigjim435]

Welds like stainless crossed with iconel

[@EducationTruth]

Are you using 100 percent argon?

[@arweldguide1729]

Nice

[@boily78]

Did you feather your tacks? What amps was your cap at

[@Salvation4allnations]

I’m currently doing the shipyard weld test now and the nickel is way different

[@WELDorDIE]

Nick Britton what is different maybe we can do a video on it for you

[@vincentgizdich2842]

Yeah you can sure tell copper is involved, looks like straight copper being welded

[@whatareuduing]

Great video, are you running downhill in the 6G and 5G position?

[@bsideadventures2180]

Just found yalls channel. Great advice

[@dr.sparks6461]

I am coming over to get them go tips

[@chrisv.6951]

Did u roll the bead ?

[@ricardom.santiago4105]

how much do you have the temperature

[@Lunatech04]

What kind of clippers do you have on the video?

[@fitrider6pointoh]

Juan carlos Luna those are knipex

[@vincentgizdich2842]

Only way to go

[@johnkantar]

I'm thinking of doing copper exhaust any suggestions / thin wall

[@bonerDB]

better is using 1.5mm thin ss pipe. It will stay much longer, its cheaper and easier to make

[@johnkantar]

@@bonerDB im just trying to do something different for motor shows and ive heard from some old timers it would sound great. I currently have ss.

[@bonerDB]

@@johnkantar if u want do smth special use Cunifer. Polished Has the most beautifull collor and blink. Try it and be carefull if.u want weld that material its very hard to.make if u dont want leave any sight

[@johnkantar]

@@bonerDB thank you ill look into it

[@djyul]

DONT!

[@skidrow6929]

hye is same to monel 67 filler metal?

[@koshjosak]

Very similar if not the same

[@orlandofernandezgarcia2097]

I want see you but in 8" schedule 80 Cooper-niquel gtaw Welding.

[@Swishasweet2811]

fuck you

[@ojsdaddy]

@@Swishasweet2811 woah lmao

[@cgarciacg67]

Any advice to copper to stainless

[@phiksit]

Silver braze it :)

[@kaleb238]

You never walk the cup for the Navy

[@bonerDB]

when u welding cooper nickel u dont see edges of melted puddle. And as u said there is no place for walking the cup on real "work". Author should show how to weld that using free hand

[@jacobjames1171]

So sick of the cup walk technique.

[@shahidalam5485]

Sir i not satisfied your video