Turning INCONEL 718 age hardened. 390mm - 360mm x 1300mm long.

[@grumpyg9350]

It put up a good fight, but you kicked its ass. Fun to watch 👍👍👍👍👍👍👏🏻🍻

[@oliviermalige3279]

After a quick search, it seems like Inco 718 can be around 68 Hrc !!! Inserts are not crying for nothin' :)) Thanks for sharing !!

[@missmymountain]

It's an Inconel alloy I've never welded but I've worked in Special Metals and watched it made back in my days as a pipefitter in WV. Interesting to see it get finished into a working part.

[@MWL4466]

Tough stuff that 718 ! Those long cuts do give you a chance to read the paper though. Cheers from Canada.

[@sminkles]

Great job bud! I used to machine a lot of Waspaloy,which was an absolute git! I believe they are similar in composition.

[@dirtysteve309]

I turned 450 bhn waspaloy 30"x5" disk... with hammered forging and a 1/4 in. Scale depth....took me 2 weeks to turn...talk about nasty stuff!

[@catabaticanabatic3800]

Impressive,. Never tried turning it but have milled inconel grate bars from energy from waste boilers. Tricky to get right with interrupted cuts on three of the faces.. Hammers the inserts. Expensive process.

[@nectouxpierre4634]

The 718 is hard as a rock. 😀 Nice job

[@userwl2850]

NECTOUX Pierre yes it's really good stuff.

[@johnstrange6799]

Looked good at the end. Nice job.

[@userwl2850]

John Strange cheers John.

[@gredangeo]

Really nice work. :)

[@userwl2850]

Thank you. 👍

[@mer9706]

What is even more insane than dealing a chunk of inco like that is trying to imagine what the hell it's going to be used for. Aerospace, nuclear, military, the beginnings of a turbo shaft? One interesting description I have heard about trying to machine the stuff is that it's like machining rubber bands. Tool shredding rubber bands, obviously.

[@userwl2850]

jUsto hi. This had been age hardened so ????? Really hard stuff.

[@talkvideo9059]

I'm guessing this piece of metal was pretty expensive. Is that what you were trying to show, that the tool only made it about 9" before the insert was used up?

[@bluejay3691]

I have to turn this stuff all the time and i work for a company that makes valves for many different companies including paper waste, oil, steam, and nuclear reactor valves.

[@userwl2850]

@@talkvideo9059 yes. The inserts don't last long.

[@johnbaugh9736]

Na there's no bend in inconel, your probably about a super duplex or a monel

[@neilmchardy9061]

When I was doing hard metals turning a small amount of coolant could promote localise work hardening, an absolute deluge was needed.

[@theessexhunter1305]

Nice finish on the last pass.....

[@userwl2850]

The Essex Hunter all ways leave 1mm to finish.... it looks pretty. 😉

[@RemyMartinVSOP]

Old lathes pull like trains. Only thing I'd be wary of is tapering away. Coolant should always be used on hard material. The square tip is the right one to use to dig in. I think it's set up right speed and feed looks good. The last cut should be no less than 20 thou a side unless it's going to be ground to get better finish?

[@poridgebowl]

It's too hard to machine how it is machined so smoothly? Which cutting tip is being used?

[@chloehennessey6813]

Looking at Inconel videos to see why it costs so much. My exhaust headers and turbo/plumbing are Inconel 718. I know it’s Inconel. Just not sure about the 718z maybe 640? Anyhow it cost me an arm and a leg lol

[@userwl2850]

Yes 718 is used for car exhaust but only very expensive cars.

[@gj91471]

Inconel 625 for exhausts.

[@jaggynettles]

@@userwl2850 how do you rate the type 18 dsg with the electric clutches

[@ruslend2028]

bigbig lathe...big big job 😊

[@peterfitzpatrick7032]

Gnarly... those inserts are EARNIN their keep.. whats the Rockwell # on that grade ?? 🤔 😎👍☘🍺

[@bbradleyish]

I want a snare drum shell made of Inconel! 14” diameter by 6.5” deep. 1mm thick Can this be done?

[@userwl2850]

Yes it can. It would be the most expensive in the world. 🥁😩

[@Shoorit]

David Wilks 3hat would be the order in which you turned it? And what would it be like with 1mm wall thickness?

[@subwooferbone]

Not hard to make a drum shell from 718, you just have to go about it a different way. Get some aerospace grade 718 sheet, cut, roll and weld. If you want uniform material properties it needs a full heat cycle after getting it properly round. Not going to be cheap, though!

[@neilbrown3359]

Inconel is some insert killing shit!!!

[@dustinwolfe9591]

Is age hardening like work hardening or is it literally letting it age?

[@alby2317j35]

What's happening if you take a Small pass arond 4/5 mm radial and feed of 0.5/0.7 mm-rev and increese the Speed about 60/85m-min ? The insert seams to break for the low cutting Speed

[@userwl2850]

Alberto Dal Maso this steel is 718 age hardened. The ruffing cuts was on 10 rpm and .2mm feed rate. If it was 12 or 13 rpm with a .3mm feed it would not cut. The finish cut was 22rpm and .3mm feed rate removing .5mm. There is no faster way to cut it. Thanks for your comment. 👌

[@alby2317j35]

userwl2850 in my workshop in CNC lathe i saw turning duplex about 850/950 mm of diameter at 74/80rpm 10 radial depth and feed of .84 . The tooling use is of sumitomo brand (i don't know what kind of duplex in commercial Number)

[@landlifem5872]

@@userwl2850 There is a faster way. 45° approach angle, positive rake, lots of coolant, 20m/min and .8mm/rev feed.

[@mickocallaghan4896]

hi david nice work i love dsg lathes i have 2 a17t and a 1609 that machine looks like a 25?

[@userwl2850]

Mick O Callaghan hello Mick. It's a type 21. Never in 25 years has it had a problem. Everyone should have a DSG.. BEST lathes...... ever.

[@mickocallaghan4896]

totally agree david,is their any chance i could get your email i would like to contact you about some material i,m considering for a project thanks mick.

[@matthewpigott5568]

Why would you turn toward the tailstock rather that toward the Chuck? I always apply pressure toward the Chuck whenever possible..

[@kuei12]

For more views and comments.

[@poparab]

and when you are using more cooling emulsion, your tools will be hold longer 718 is was very hard

[@leontalijan5514]

Well really depends on the insert. If its a ceramic insert, then its best without coolant.

[@СЕРГЕЙРУЛЬКЕВИЧ-е6х]

Не проще было справа подавать, прямым. ММ по 15-20? И обороты побольше. У этго резца площать резания то больше, труднее... Хотя, если оклад...😉

[@rc8rsracer1]

Why are you cutting chuck to tailstock?!?!?

[@userwl2850]

If you look on my videos "unconventional turning explained" you'll see. Sorry can't post link I don't know how to do it.

[@kuei12]

@@userwl2850 I looked. Did not see any explanation.

[@leegenix]

I started watching Keith Fenner on his channel, but after awhile,it got boring (sorry about that pun). Ha..I like to watch the action with no interruptions like titles or too much talk.

[@chachi_luna]

Fuck! We have to inlay our valves with 625 inconel, for some reason it cuts better away from the chuck like here haha, interruptive or not!

[@userwl2850]

chachi luna hi. I've got to machine 625 today. 13" long

[@chachi_luna]

Enjoy!

[@DolezalPetr]

sounds like it is tearing the material instead of cutting it

[@MakinSumthinFromNuthin]

Impressive as always....what is the largest diameter you can turn in that beast ?

[@userwl2850]

Makin Sumthin From Nuthin hi Richard. 16" x 120" long..... just got this in with .5" to spare on diameter.

[@literoadie3502]

Imagine doing that with HSS....

[@userwl2850]

Lite Roadie it's not possible to cut with HSS.... no chance.

[@literoadie3502]

userwl2850 What was the surface speed here? Could you do it with brazed carbide?

[@davesnothere512]

@@literoadie3502 I think a brazed tool can work, you just need to mind the tool pressure?

[@UncleDonut66]

Wow, how many inserts did you go through?

[@userwl2850]

David Rich hi Dave. X2 19mm square negative so 16 edges.

[@Sanatmaji]

Very nice #sanatmaji

[@perfectionist2032]

Userw2850, I might be to help reduce you carbide costs. What size of SNMG is that kzbin.info/www/bejne/l5SrdHx5hZ6fpbs ?

[@johnbaugh9736]

No coolant is daftness, I wanna be no where near that swarf

[@userwl2850]

Trust me.... it burns you seriously. Red hot litrely.

[@johnbaugh9736]

My 718 swarf doesn't, it's like razor sharp silky ribbons

[@johnbaugh9736]

That a ward 7 your spinning it up on?

[@RemyMartinVSOP]

@@johnbaugh9736 Try lowering the speed, and put the feed up to encourage it to chip. Also consider tip shape you are using and cut size. Inconel can be machined successfully if you are patient with it and find feed speed that works for your machine.

[@johnbaugh9736]

@@RemyMartinVSOP I know dude, I work a lot of inconel, last week had some high yield 718 on my capstan making some cap screws. Had my surface finish like glass on the plane shank, 178rpm with plenty feed on my roller box, loved it,it did! Inconel is easy, you just gotta cut it how it wants to be cut. Want something horrible, try Nitronic 50. The thought makes me cry lol

[@MaximumDistortion2]

you said once you dont use coolant because its easier to see if the insert is worn out or not. it would be interesting for me to know how much longer the edge would last if you would use coolant, because one hears all the time how important coolant is on this stuff or similar like titanium. not that i think i know it better than you, i'm aware of that you´re machining this stuff everyday. personally i never machined inconel or titanium, looks like a real nightmare to machine.......

[@userwl2850]

MaximumDistortion2 hi. Not always allowed to use coolant. This runs so slowly it makes no difference. All the heat is transferred into the chips and not running fast enough to bother the carbide. I give the tool itself a little drink now and then. Titanium exactly the same. Boring it by trepanning is a different game altogether. Couldn't possibly do it without coolant as it's cutting the centre away and the heats transfers into the job. Understand? 👌

[@MaximumDistortion2]

thanks for your answer!

[@ИгорьСухов]

Rigid metal.

[@dirtysteve309]

Stink inky

[@sokolovaaaa9112]

Хуже ток ПТУшник сделает..с 1-го курса. Ужастная мех обработка.

[@justtim9767]

If you like machine noise it's ok, but with no explanation it serves no purpose. Thumbs down.

[@nerd1000ify]

If you know a little about machining and materials science this video is very interesting. Inconel 718 is a 'superalloy' used for making machine parts that must endure very high loads whilst also being subjected to very high temperatures and/or extremely corrosive chemicals. Example applications would be jet engine turbine blades or valves and pumps in nuclear reactor cores. It's expensive, rare and notoriously hard to machine. In this case, the metal has been heat treated to increase its strength: this makes working with it even more difficult, so the turning being done in this video is an impressive display of skill on the part of the machinist.

[@userwl2850]

@wombat 🤣👏🏻😎

[@userwl2850]

@@nerd1000ify thanks for that. You are the exact type I wanted to watch. 👏🏻👏🏻👏🏻👍