Can I Forge INCONEL?
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- Опубліковано 16 сер 2021
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Taking on the Challenge of trying to forge Inconel today! This is a material that is used quite a lot in aerospace because of its incredible properties at elevated temperature. Not only am I curious to see if I can forge it, but also if I can cut, sand, face, mill, drill, and tap. Make sure to watch the whole video to find out how it all goes!
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My first expericence with inconel was many years ago and the company chemical division was trying to develop a new process to refine copper ore. That division asked us to expose the ore to high temperatures to bring about a chemical change. The material was placed into what looked like large baking pans. The pans were made of sheet inconel probably .050 thick. Once the pans, containing the ore were placed in a forge and brought up to several thousand degrees, the inconel pans were nearly white hot and you could see the ore material through the side of the pan. After a number of heating and cooling cycles like this the pans were warped, but there were no failures of the metal.
Tim: “Today we are going to be working with a really hard material”
Also Tim: “WHAT?! It’s so hard!”
i think he meant that he didn't expect it to be hard at such a high temperature lol
I don’t know what else he expected…..
That’s also what she said
@@gasgasgas gottem
@@call_me_mado5987 tbf that’s the main reason anyone uses inconel
You need constant coolant flow when milling inconel at lower rpm with very specific inserts made for it, or you can get ceramic inserts which you _have_ to run at very high speeds, the chips come off glowing red. I've machined inconel parts weighing several tons (using a mill with 42 feet of X-axis travel, 13 feet on Y and seven feet on Z, not your average mill lol, the thing could turn a 12 inch face mill at a half inch depth of cut in steel), going through four grand worth of inserts in a day was normal operating costs which were actually very optimized. The stuff is universally hated by machinists, every time one of us knew an inconel part was coming down the line the bitchfest began, the stuff is awful.
Also, you need carbide drills if you want to poke any kind of accurate or deep hole in inconel, HSS or M2 cobalt is just way too soft and not rigid enough, that's the awful chattering you're seeing/hearing. Straight flute gun drills with pass through coolant work the best.
And when using any endmills, keep the flute length as short as physically possible and chucked up as close to the flute ends as possible, every micron of deflection you can prevent means a longer tool life. And use high helix endmills, they're absolutely necessary.
I've always equated any kind of work that involved Inconel as to trying to get a chip off Superman's chest. Doing it yourself saves a pittance of money (not time!), but any time we had to send some out to get work done to it, every single work order was 3-4x the price right off the bat.
On the flip side, watching it shrug off afterburner exhaust as 'lowly' stainless begins to warp is quite rewarding.
@@C-M-E That's a good comparison, I like it😂. Trying to get a chip off Superman's chest, yeah that's pretty close to reality. But yeah, Inconel's high heat strength retention is the stuff of legends, there's a reason orbital rocket engine bells are made of the stuff. There's a few videos of the older much higher powered F1 cars revving their motors while sitting still and their exhaust pipes are literally glowing white hot, enough to provide light to the surrounding area, and like you said not warping or oxidizing the slightest bit. Amazing alloy...
What industry were the several ton Inconel parts for?
@@Minerals333 Usually for steel refineries, but we also did some work for a massive hydroelectric dam, they use a lot of nickel alloys for wear resistance. We built (from start to finish, cutting all the plates out, welding them together, heat treatment and then machining) a number of gate valves built mostly from a nickel stainless alloy with inconel valve faces, which had a 6 foot internal diameter (big time flow, in the millions of GPM flowrates). They were turned on a 12' swing vertical lathe then moved to our Union mill (the aforementioned 42'x13'x7' travel mill) to drill bolt holes on all the flanges, cut seal groove rings and oil ports and any other small details.
We started to switch over to end Mills that have the replaceable inserts, it makes it alot cheaper but just as time consuming. Running it on a lathe is alot easier you just have to keep sharp inserts or else you end up pushing the material.
I forge bell helicopter impellers from inconel. We also use inconel as the racks in our furnaces for titanium and our inconel. Furnaces stay at 1720f year round and the inconel racks only get replaced as they get bent. Pretty crazy. Although the furnaces are pumped full of nitrogen to avoid oxidation of parts and racks. We forge around 2000f for inconel parts with a 12000 ton Erie mechanical press .
Inconel doesn't get upset easily, but it falls apart at a moments notice
haha clever
I have a drawing at work that has an upset piece with a sad face and the caption "this forging is upset"
It has an odd characteristic in that when it breaks, it has a “tear” (paper tear) effect to it. The nickel content is what gives it a crazy surface finish to it
Sounds like a republican - except they scream like little autistic girls before throwing a fit - they call that a Snowflake.
I've worked in aerospace engineering for years, and I've seen machinists reduced to tears because this material is just a contrary beast. If you want to poke holes in Inconel, you'd better go to the sinker EDM machine, because trying to dill a hole in will just piss it off.
its not that hard to drill, just can't be an idiot, use sharp drills and proper speeds and feeds, carbide helps but isn't necessary. It work hardens quickly, so if a drill does go bad, then the part is done, most will continue to try drilling throwing new drill after new drill into the same hole with the same results.
@@northmanlogging2769 Have an oven to anneal it
I worked as a CNC machinist for 5-6 years specialising in LARGE inconel parts for the oil and gas industry, you do go through ALOT of carbide and ceramic inserts… cutting premium threads was an absolute ball ache due to the sheer strength of the material. Every spring pass would take out more material, due to tool deflection and wear of the insert, that is, until you work harden it. if that happens you’ll need to take a much deeper cut to get under the hardened layer, not easy when you’re working to +/-.001” with a 16 finish on £1/4million parts.
There’s actually a few different grades of inconel, 718 was one of the worst to work with, so much so that 925 grade inconel felt like mild steel in comparison. You can tell the difference between inconel and mild steel very quickly, inconel has a very familiar looking yellow sheen and weights significantly more pound for pound
We use it all the time at work for output carriers, sun gears and so on. It’s hard on inserts, but it machines fairly nicely and has an incredible surface finish.
I waterjet it with 80,000 psi.
nobody: "I'm going to forge inconel."
inconel: - laughs in metallurgy of non-earthly dimensions -
lol 😆
Why am I hearing the Black Knight of Williams Pinball fame now..... (BTW, that was Pat Lawlor that did the voice recordings of the legendary pinball antagonist.)
Try to forge diamond
@@carlislenightingale8853 Similar.
I love that Martin is the "Teller" of this duo and Tim is the "Penn".
Inconel is a trademark that covers a big family of different alloys. It helps to be precise. There's a huge difference between an annealed inconel 625 and a precipitation hardened inconel 718.
I'm guessing you had something like 718 which is why it behaved the way it did. If you can get it up to about 1000-1100C and hold it for a few hours, that should dissolve the precipitates so it softens to the point where you can work it.
I was inspecting a vessel made of Inconel and the legs were just stainless I think SA-316 and the customer called and wanted the the 16ft legs to be Inconel also. Response went "what? are you sure? You know how.... yea we can do that." Then looks at me "well more money for us!" I was both shocked and laughing because that is not what Inconel is for.
I've held Inconel nuclear fuel cells before fueling and seen them being removed from a reactor. The stuff is light but can take huge amounts of heat until the material fails. Seeing what the Inconel cladding looks like after a meltdown is exactly the same as his failed hammer forging.
@@dagger6467 That is why they use Zirconium alloys for cladding. Unfortunately that alloy has this tendency to get brittle from high temperature water steam (1,230C). Resulting in a condition called hydrogen embrittlement.
Inconel:
You're flying on it. A lot of the jet engine rotating components are made with it. It's hard as hell. Part of the Unobtanium metal alloys group.
I’m a machinist and work In the aerospace industry. Can verify this stuff is hard as hell
Titanium is brutal as well. Destroys Hanita endmills.
@@edgeofentropy3492 Titanium and it's alloys are not hard. They do gall easily.
@@christianhubbard8444 Not even close to the hardness of bearing steels or stainless steels (at room temp). But it retains strength at high temp.
@@FinnMcRiangabra i work with plenty of stainless steels and all types of materials. Inconel 718 is one of the harder and frustrating materials I’ve worked with. I use 17-4 and 15-5 SS on a regular basis and it’s a significant difference.
I worked in aerospace and we used inconel 718 all the time... It took a 120 ton forming press to mold that stuff into shape and our material was only 1/4" thick. We could not go from bar stock to final part, there was about 5 forming steps with different dies in the press. In between each step we had to send all the parts out for a heat treat. We manufactured the different compressor stages for the GE 90 Turbofan engine, the one used on the Boeing 777... So yeah it is a total pain in the ass LOL
It's like stainless steel on steroids! No scale or flaking at any of the temps shown. Amazing! Thanks, Tim. ⭐🙂👍👍
Exactly why it was first created actually.
Well inconel is a nickel base alloy and it is alloyed with (mostly) chromium, molybdenum, vanadium, niobium, cobalt, manganese etc... Nickel and chrome (vanadium and molybdenum not so much but still) are the most important alloy elements for making steel resistant against corrosion and other properties a also achieved by adding these metals to iron alloys for example nickel is used in steel alloys for low temperatures (-50°C and lower) to prevent that the steel get to bridle in the real world that and similar alloys a used for almost any liquid gas application
“I thought that was gonna be easy peasy….”
I love the spirit y’all have on here!
It is perfect for making tongs, mandrels and other tools that contact very hot metal very often
This alloy was the foundation for molten salt Nuclear reactor. If you can forge it maybe you can make a fission reactor and solve all our energy problems.
Except salt reactor tech has been abandoned orphan technology for decades lol
@@joshschneider9766 Because it can't enrich uranium/plutonium for nukes. It's however much safer than water cooled reactors, if deprived of power it cools, rather than reacting harder, so it'll never have a serious accident, barring destruction of the reactor by an outside force, like someone bullseyes a bunker buster on it. It's also having a bit of a resurgence, reactors are being built. In fact one is scheduled to be completed and start testing in September this year.
Inconel is routinely forged, just with slightly bigger presses
This material is a foundation in water cooled reactors as well.
@@OnlyKaerius If you look at the video that is out there for what happened to the molten salt test reactor you can see why it was set aside. Salt is not your friend. The thing nearly melted down.
INCONEL machining is often done with extreme levels of cooling and lubrication, i notice.
Yes. That’s a true statement. I work as a machinist in a machine shop
and low cutting speed. unless you have ceramic inserts then you need high cutting speed
We use formcut 150 in our machines and never have an issue. Slow speeds and feeds for sure though. .01 d.o.c. on edge passes and .02 on bar out processes. It machines beautifully to a mirror finish though. I like it.
@@985476246845 My understanding too is that you need a deep cut our else you are fighting against work hardening.
Where I work, we do mostly inconel and titanium parts. The learning curve for inconel can get expensive. I suggest doing a good amount of research before you mess with it in any major way to save yourself some cash and time. Edit: Also, as someone said before, coolant is absolutely required if you are trying to cut it with HSS, extremely recommended if you're cutting with carbide. Both of those cutter types will fail much more quickly without coolant when cutting inconel. Also, I dunno why you'd want to use inconel unless you're making a combustion chamber or certain other parts for a rocket or high performance jet engine. It's primary application is environments with extreme heat. It's not harder than the hardest types of steel, but it doesn't get softer with heat like steel until you get it VERY hot. Some types of inconel are actually harder at higher temps than they are at room temperature.
Tim: This is the hardest material I ever forged.
Me: Make a hammer out of it, just for the sake of it xD
I so agree.
That was my first thought "Fuck, if it doesn't workharden easily that would make a wicked hammer"
@@maeve615 it does
I wonder what an inconel anvil would cost.
@@hughezzell10000 probably more than your house. The stuff is expensive, and as the video shows, a huge pain to machine.
I worked in a machine shop in Houston back in the ‘80’s. We used a lot of inconel for the oil industry. I don’t know which particular alloy(s), but I remember picking up a bar about 1’ long and 3” diameter and it was insanely heavy.
I used to machine it years ago when I had a shop and made small Aerospace parts. It machines similiar to Titanium-Stainless alloys. Nice orange colour while it was in the forge! That power hammer is wonderful.
"Two heat treatments are generally utilized for INCONEL alloy 718: •Solution anneal at 1700-1850°F followed by rapid cooling, usually in water, plus precipitation hardening at 1325°F for 8 hours, furnace cool to 1150°F, hold at 1150°F for a total aging time of 18 hours, followed by air cooling."
did he say 718? I think its more like 625 what he used...
@@mrjodoe just showing it can be annealed. Would probably need to be done multiple times during the machining and drilling process, much like working with copper.
@@NOTSOSLIMJIM got it. Crazy material...i wonder what to do with a whole roll of wire. Maybe robotic mig or tig welding of inconel parts?
@@mrjodoe I have tig welded it before, it's a pain. I use it for firearms parts
@@NOTSOSLIMJIM oh ok, didnt know this. Eg gas pistons? Or also slides and/or barrels?
Old man: Power hammers make less of a blacksmith.
Me: yo I bet you can’t even handforge this mild steel bro…. 😅
Well, not all old men are wise men i suppose...
I had to start by hand when i was young, bit my master did use the powerhammer "You need to learn, but i need to save time"
@@sheep1ewe If you use ANY modern equipment and do not smelt your own alloys by digging up minerals, you are NOT a smith, you are a metal worker.
@@michaels.ramsey7803 And don't dare to buy any of your tools...
@@michaels.ramsey7803 Incorrect.
A Blacksmith is anyone who works with steel, Iron, etc using hammers and other implements to deform it.
A metalworker ironically is anyone who works with metal in any way; casting, mining, etc.
Even historically not all Blacksmiths would've mined their own ore. Miners EXISTED at those times too; and iron was a hot commodity for anyone willing to mine it.
So was coal. Coal was mined, and sold, almost never mined by the smith.
If this was a mild steel and not a super alloy, I’d be more keen to agree with you
Drill it with SuttonTools R40 Inox drill bits low speed and plenty of lube. Have used them many time to stop crack propagation in gas turbine exhaust inner shells. Love the vid's keep them coming.
Inconel is a nickel alloy. To cut it on a band saw you need to set your speed, feeds and drop to a minimum. Cut slow, feed high and drop slow. The settings we use is 19rpm speed, 8 feed and 0.5 drop. It takes a long time to cut so just be patient and it will cut. Oh and you need constant stream of coolent. If you try to cut this stuff without coolent you will just burn out your blades.
General Motors forged inconel for years at their locomotive division. It was used to make heads of diesel engine valves. The valve line at the plant was pretty impressive, I used to give tours of it. The line started with the inconel bar stock, which was cut into slugs of the proper length, heated by high-frequency induction until it was red-hot/glowing, and then forged into the rough shape of the valve head.
Great video - superb workshop.
It's also used in extreme chemical environments where even the most corrosion resistant steels wouldn't last five minutes. It has great resistance to hydrogen sulfide for example, so it's very popular in the oil and gas industry in places with sour gas.
It can be readily machined using the right tooling. It can certainly be forged too. You need to get your speeds and feed rates right too.
I made a firearm safe and used Inconel sheet, dura plate 5 on 5 and 8mm SAF2205 in a laminated configuration and ran 30 kg of 6mm ball bearings in grout slurry between one of the lamination, then I ran a spring loaded glass relocker on the four sided 12 x 30mm stainless steel pins running off a four way gear driven locking mechanism all locked by a custom locking set up!
Let’s just say I needed to hire a crane to get it home!!
I would say thermic lance would be the only way in for undesirables!!
Metals are crazy stuff to work with love em all!!!
Gotta use carbide only on inconel. And only an abrasive wheel saw to cut it. Been machining it for 20 years. We found that having the drills and taps TiN coated makes a HUGE difference.
I love experiment day! That was very cool.
Seriously burst out laughing … the noise it made on the first strike was amazing… cheers you made my day 🍻🍻
just like hitting a dead cold piece of steel. Amazing.
@@entropy11 sounded exactly like that, you could even hear it in the power hammer.. really tough stuff…
Cool video, much more interesting than I anticipated. :)
I worked 625 inconel in aerospace apps. One thing you find out is you can't hand drill with cobalt bits and fast drills. Once it snags...you have a shattered bit. We used hss bits and replaced them often. If you ran a bit until it dulled...it would work harden the hole instantly. So any heat buildup is bad news. You use a lot of bit lube (boelube) and slow rpm. that is probably what happened to your small end mill and drills.
I haven't had a single bottle to open with my bottle opener, but I fucking love it. It sits on my desk while I work from home and I just mess around with it. I am not stoked for the first time I drop it into my lap and crush one of my family jewels, or onto a toe. But still, love it and so glad I can do even my small part to support the hard work you and Marten do.
Perfect material to make some forging equipment :)
A set of the worlds most durable hot chisels would be interesting additions to your collection of exotic metal blacksmithing tools.
I enjoy how you progressively try forging more difficult materials.
I wonder if the folk over at the inconel foundry are having a chuckle
Timmothy it is always good to learn things. Always really like seeing ur videos. Because as a beginner up and coming blacksmith I always learn from your videos. Great job they as always. Keep up the great craftsmanship and hard work my friend. Keep planning. Forge on. Keep making. God bless.
Grew up in a s work in my old mans welding & machine shop. The hardness of this material is beyond what we would deal with. Props to you for tackling this.
These are my favorite videos that Tim does😄
I’ve sanded the flux off incolnel welding rod and twisted them up with cable Damascus, works great.
I'm digging the midweek content. Keep up the awesome work
Tim Make an Inconel hammer, punch, and chisel set!!!
The hammer wont have any heft. Its very light for its strength.
@Belagerungsmörser the Sheep That would be cool. I have my forged metal working hammer (RH4) and a 18oz titanium riveting hammer. An Inconel or Zircaloy 4 hammer would be a rich mans indulgence.
great test ... bravoo
I have an entire new respect for this stuff.
I used to work in an automotive machine shop rebuilding engines. I cut valve seats and install inconel valve seat replacements. Inconel machines wonderfully. Great for engines that run boost and nitrous, proventing the water jackets from being pierced from the etreme pressure of high lb valve springs and cylinder pressures👍
Best blacksmith channel on the Tube in my opinion. I will say that I prefer this kind of content. Inconel and Titanium. You should keep experimenting with different metals! Great stuff, Tim!
Friction welding Inconel ? great video. What an amazing material.
Smooth,,,,, lol.
How to baffle a Canadian with a space hockey puck 😆😆😆
This was the prelude video to a McCulloch gear drive supercharger. Love to all your buckin ears (John Lithgow 3rd rock)
Jeebus... That stuff is gnarly!
Being an aerospace and strategic materials melter, Vacuum induction. We made a lot of super alloys. We got some scrap 718 in wire form, couldnt bend it with a hammer. It loves heat even for the hi NI. content. Turbine blades are made from it.
I had a turbo kit from Audi Performance and Racing on a 98 Passat. Killer little kit. The exhaust manifold that came with it was a lost foam cast manifold made of Inconel 625. Seem to deal with the heat great. No rust, no leaks and was a really nice smooth surface from the casting method. Probably overkill.
I would have felt bad but I would have laughed so hard if when you set it back 8n the press if it fell back into the hole.
Really interesting experiment Tim! Also got my bottle opener last week! So SICK! And works amazingly well!
I am impressed how well it maintained hardness under heat.
Inconel would be great to use for forging tools. Imagine a punch or cutting tool for the anvil made out of it. You would never have to replace it.
I was thinking tongue . You could heat them up with the project and prevent heat loss
I love how you experiment with different materials! Had never heard of inconel. Please keep experimenting! 🙏🏻🙏🏻
Inconel is a trademark of INCO (International Nickel Co), and is really a generic name for a lot of different alloys which actually have a big range of properties. The really strong ones used for turbine blades can’t be forged or welded at all, just cast and machined.
I encountered several exotic alloys while I was in the relief valve business. Monel, inconel and hasteloy. I still have some that were discs from relief valves.
Was waiting for somebody to do something with forging inconel!
Looks like it makes some good drifts or Hardy hole tools like one hell of a hot cut off
Maaan, why is this man with his awesome videos, not getting enough views and subs? Really appreciate the content!
I made Inconel and 52100 San Mai. It's pretty easy with a powerhammer. Turned out great.
All a good demonstration that you have to match the tool and machining operation to the material. I had an abrasive, coolant-flushed cut-off wheel absolutely fail to work in the face of a modified Invar bar. Normal Invar it would go through like a hot knife through butter.
The Camera work is awsome!
Love the scene where the Inconel is heated in the Forge.
I used to blank punch .071 inconel on a 140 ton press. Each part was about 15 square inches and each cycle sounded like a shotgun going off. The punch and die were made of a2 and the part had sharp 90 degree corners which cracked after about 12 parts. Pinning of the plates was required and the punch tool was scrapped after 50 parts.
I worked with it at a factory that produced glass. Used it as a gate to block the flow of glass. We used a welder turned all the way up to gnaw our way through until we got a plasma torch to cut it. Tough shit for sure.
Interesting stuff. It didn't even look like it had any scale on it after it was heated. Maybe you would have to pretty much drown it in coolant to prevent it from getting hardened from the temp of the drill bit.
Has good chemical resistance also. amazing stuff.
It's also super hard to weld with, at least with stick. We chew through bits like crazy with pneumatic bevelers on inco cladden boiler tubes. Sometimes we use inco for hardfacing boiler walls in high wear zones with $1,000 per roll mig wire. It's a beautiful material.
wow, make a round hole punch with this material. It's perfect, you don't have to cool it off to re-punch the metal.
Welding it is always a trip haha if you don't follow the right process and preheat (usually) prepare for the cracks haha
Hey Tim I am new here..... know nothing about blacksmithing other than I think it's cool! I was rolling.... literally LOL when you hit that with the hammer. Funny thing was that you looked at the hammer! Hilarious
I just want to say that you and your videographer do some really great work with lighting.
I used to build gas turbines in a previous life (industrial ones for running oil pumps, making power etc) and I've worked with inconel (and nimonic) a *lot* though I've never machined it myself. We used to have a robot that would take pre-cut blocks and mill them (with intricately hollow air channels inside and have super fine air holes drilled) into gas turbine blades all day and all night and then they'd be sent off for ceramic powder coating and the like - this was the very late 90's when basically nobody was doing that. We used to go watch it do that on like lunch break or whatever - but there would have been a time when people would have done that not totally unlike the way you're machining it here which is crazy to think. It's my understanding that with these superalloys you're supposed to essentially take out big lumps in one go with really powerful machines to get around the work-hardening problem.
Whatever you do, please e safe and have fun. ✌🏽
It would make some cool knife scales
I admit, I knew what was going to happen here... I just really wanted to see someone figure it out for the first time, lol. Inconel is a monster material!
The North American X-15 rocket plane had skin made from inconel (actually, Inconel X), as the skin reached over 1200C at speeds approaching (and exceeding on one flight) Mach 6.
Inconel has been used to make exhaust valves in Top Fuel Drag applications.
This material is brutal.
I've worked for a company, Tempress Netherlands, in the eighties that made furnaces for eletronic wafers, and in these machines they did heattreatments with special gases. To hold these gases in the spot they usef baffle plates which were hanging on wires that were fixed on the top of the furnace. All inner material was made of Inconel and the holes in the top plate, which was 5 mm thick, were 3 mm drilled holes. Every plate had maybe more than 100 holes. With one drillbit you could drill 3 to 5 holes. Untill I found out that if you aliviated, by grinding, the drill bit and leave just a small contact brhind the cutting edge, so that coolant could get very close to the edge, tha then I could drill up to 25 holes before sharpening the drillbit again.
Yes it is a special material to work with.
My entire forges ducks nest and clinker breaker (weighs about 60#) is made from 3/8” incolnel I cut out at work lol. It’ll still be usable in 10,000 years. Remember that old Johnny cash song, “I got it one piece at a time…and it didn’t cost me a dime”
Looses piece of Inconel in hole under flypress.
Proceeds to pull it out and throw it right beside the same hole
That clank when you took it out of the forge the first time and hit it with the hammer was so satisfying.
Inconel suppressor parts are the holy grail for full auto rated cans.
Back in the old days. On a car tune up we would file the outer electrode on the spark plugs leaving the edges as sharp as possible. Same with the center electrode.
Inconel files and grinds fairly easily compared to trying to burn or shape it.
You can forge anything you set your mind to Tim!
We use this a lot at my work in the oil industry.
It's is VERY EXPENSIVE and tough 💪💪
Inconel has a high Nickel Content. Low RPM, Light cuts. I cut Inconel 600-900 pretty much daily. In a lathe there are special inserts that are designed to cut inconel. Inconel 718 is a Heat Resistant Super Alloy. Its a tough material to cut. But very rewarding.
How over stated, exaggerated, wild and out of control is Marten. Awesome guy.
Congrats your a material scientist now you've just discovered that the molecules of inconel are ridged in extreme temp's
How would this work as a hot punch/drift?? Make one and try?
@@jarlove you can't.
Good job, I never heard that before. ypu guy made youtube more interesting to explore.
Inconel X-750 was used on the X-15, the airframe that Pete Knight flew to Mach 6.7, over 4000 mph. It keeps its strength at high temperature. If forms a variety of crystaline structures based on different concentrations, though the matrix is Face centered cubic (like red hot iron) the various precipitates form tretragon or romboid crystals which block the slip planes.
I've been reading the comments and it's easy to tell who was taught the right way how to machine inconel and who wasn't
Inconel is fairly common in the high end valve industry. It is fun to machine ACME threads for a valve stem.
I’m impressed, you worked me up with the “it’s extremely hard” bit. But god damn
Wow I was surprised to see it mush out under extreme heat,,, an inkanel hammer? Awesome footage Tim 👏😎
I made a knife blade of a cold saw blade. I don't know what that metal is called but when it's cold it's extremely hard even without hardening. The way I drilled holes for wooden handle was to use a masonry drill bit and let it heat up to red hot and thereby drill through. No way you can drill it with ordinary metal drill and I believe even ordinary tungsten drill bits would be damaged. The masonry drill bit got red hot but appeared unharmed afterwards - not even slight wear and 100% still working properly.
Inconel is pretty brutal. We work with a lot of machine shops and while some are able to work with it, there are a lot of others who don't want to touch the stuff. It's just brutal on tooling