How Strong Are Tungsten Carbide Tool Bits? Hydraulic Press Test
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- čas přidán 29. 04. 2022
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How strong are tungsten carbide machining tools or tool bits? We are going to use our 150 ton hydraulic press, 240 ton force sensor and Chronos 2.1 high speed camera to find out!
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Do not try this at home!! or at any where else!!
Music Thor's Hammer-Ethan Meixell - Věda a technologie
Can the watermelons get some googly eyes next test maybe? 👀
This is a serious channel - no silly suggestions ,please 🤪
Yes yes yes!
They have them. They were sleeping in this video. Next time they'll wake them up.
Very good idea, agreed.
Please don't. They'll be humanised and then I'll feel sorry for them :-(
We use a lot of those tungsten carbide endmills and inserts at my job.
The tools are definitely not meant to be used for anything other than cutting various materials - they have amazing properties for edge retention when used properly.
The edge should stay nearly atomically the same i defiantly when used properly
@@commanderoof4578 that's not realistic, that's just in theory. In practice there are hard-spots in metals, air infiltration in coolant, metal adherence to the tool over time. You can definitely get many times more tool life with the right feeds, speeds, coolant, and application= it will wear though.
@@akaroth7542 tungsten doesn’t wear it only chips
And so running the machine too fast or with too high of a torque will chip tungsten bits
But wear from use is not a thing!!
Hell some tungsten tip quarrying bits have been used for decades and the cast iron housing has given out but the tungsten bits themselves are in flawless condition minus maybe a few dozen atoms of tungsten
Not realistic… its a god damn FACT!!
@@commanderoof4578 you clearly have no idea what you're talking about. Try turning heat resistant superalloys like Inconel 718 and then speak about NO EDGE WEAR 🤣
@@qualified_monkey8813 so using it wrong you mean
Some materials you dont CNC you cast if possible and then use diamond grit
Or you CNC anyway and loose dozens of bits to needless chipping from poor use
Tungsten carbide is like peanut brittle. Very hard and tough when rubbing against something but will shatter if you subject it to a shock like dropping it. I don’t know how many times I’ve had a brand new carbide insert or end mill and accidentally dropped it just to have it chip on me.
The strangest thing about carbide is when you accidentally go WAY to aggressive with your feeds and speeds, or accidentally plunge the cutter into the material, but it ends up just fine.
Like the roof of your mouth comrade
As a machinist for 35 years I have to agree. It's like saying how sharp is this knife that we made from glass shards? Lets hit it with a hammer and find out. On the flip side, it's fun to watch stuff explode!
Well brittle and tough are opposites so it cant be both, it can be hard and brittle but then we have to skip tough
@@thomaslindroos1667 brittle literally mean "hard but liable to shatter" i just looked it up
I think the best take-away from this is: wear safety glasses! They really do their job well!
Absolutely a huge advertisement for safety glasses. Should put Nord VPN stickers on them.
Does a falling tree make a sounds if only a watermelon observes it?
When the tree falls on the watermelon it does!
If it is the holy watermelon of wogga-wogga then yes.
Depends on if it’s seedless or not...
If the tree falls on a grape it lets out a little wine!
What is a sound when it spins?
Bring back Ani, we miss her!! I hope she makes a 'Guest Appearance' once in a while!
Metallurgist here. WC is very dense and quite hard, it has an excellent life against normal deformations. But when exposed to stress, its Young’s Modulus is extremely brittle and it will fracture readily when exposed to any sustained stress like compression. Plus, it has to be treated as a particulate metal because its melting point is extremely high and it will never have the mechanical properties as a forged and heat treated metal. This makes it extremely good for tooling and high temperature applications.
It's also sintered in manufacturing, no?
Lauri, I have a question...
I know that sometimes you stop if you feel like the experiment will damage your press.
Is it time for a servicing of the big squishing machine?
What parts wear out? What about the frame? You've certainly tested the green monster to its limits.
What would you measure to see if the press is within specifications
I come here for the danger and stay for the Finnish accent!
I guest the thing to watch for is not being within specifications, but if any parts are approaching breaking point. Are some parts getting worn out or embrittled? Most notably, is there any damage or wear from the sudden jolts that shake everything when hard targets snap.
If I had to guess I would say nothing is being damaged, every component of that press is massive and can take far more abuse than he subjects it to. The only thing he could really damage is the end of the ram, but he uses detachable heads to prevent that from happening. I imagine he has to replace the main seal every decade or so but other than that, I'll bet you it's fine.
Lauri said in one video that some experiments can bend the piston if it does not push in a straight line. That could be a massive problem.
@@Macieyevsky there's definitely that, you always want to press perfectly perpendicular to the ram and baseplate.
Very entertaining as usual, thanks!
The issue with not getting higher pressures is that all the tools have very thin cutting edges which, because tungsten is so hard, shatters at relatively low force. Once the surface is compromised it pretty much just crumbles.
Yes! I've been asking this cause I figured the hardened material would explode
I love you, this video and the channel! Keep going! ❤️
there are different "strength" / "toughness" measurements in materials, very hard materials which are good a cutting tend to be very brittle, so they do not deform, defect, instead they tend to split / shatter / explode.
That may have been the purpose of this video ;)
I can say with confidence that is not the reason why we watch these videos.
Shut up. You think lauri doesn’t know this?
This is one of the most satisfying shatters on the channel…
I'm so glad that Mr. & Mrs, Walter Mellon are wearing their safety glasses!
Great video.
I think using silly putty to fix the safety glass on one melon and one melon without safety glass would have helped see difference between no protection and protection.
Well, shrapnel need to hit the melon though, but really interesting and entertaining video :3
Excellent Work!!! Some other Honourable mentions :-)) UltraFort Steel and cobalt based alloys like Delora Stellite 100 quite hard and stellite 6 medium hardness with greater toughness and corrosion resistance :-))
Most people don't realize that hard materials are also very brittle. Carbide is more like glass. You drop any of these tools on the floor and it pretty much chips the cutting edges.
These video series do proof that safety glasses are pretty effective!
For those that don't know.
If you pause the video, you can use period and comma keys to go forward or backward "frame by frame" to really see what happens.
That's awesome, never knew that. Thanks!
Fascinating. Thank you.
I just realized that Material Scientists/Engineers must *absolutely love* your channel! Particularly once you started using a quality highspeed camera...
In the end, we all love you for the same exact reason: _THE DEESSSTRUCTIOOONNNN!!_ mwahahaha 😈 😁
You should try hardened steel tool bits, I think they'll cause a lot more fragmentation at higher speeds. (though I'm not to sure)
Have you done carbon fiber nanotubes yet?
What about copper nanotubes?
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Yea there was carbon fiber nanotubes previously sometime ago. Love ur voice btw
Try no danger, ok.
Exspolise things are Not needed!
Unless you are testing strength...
Try axially pressing the inner ring of a ball bearing out. Make a housing that sits the outer ring and press onto the inner ring with a shaft.
Yes those are turning inserts - cnmg432 to be exact. I've used thousands of them
The tap scared the Mellon's they jumped a bit! Hahaha
I remember reading about making carbide bits in Theodore Gray's "Mad Science." Surprisingly easy, provided you have an acetylene torch.
Look, there is Lori Watermelon and Anni Watermelon! I miss Anni laughing in the background. 😢
The watermelon audience is a great addition!
Thanks for the opportunity to watch different material reaction to pressure stress.
Hello!
Should do hardened steel gears from a transmission. Have personally seen them explode in a press.
I'm a CNC machinist and very familiar with carbide. Carbide is extremely hard (some grade rate almost as high as diamond on the Mohs scale) but as zero tolerance to flex or deformation. The way I see it in your video you're mixing up hardness and toughness. I think HSS (High speed steel) used for tooling would take more pressure since it has more flex and it's less brittle , you could use carbide to cut thru HSS but I can assure you that HSS can't even leave a mark on carbide . Carbide reacts a bit like glass when exposed to shocks . When using carbide "properly" you can increase rpms by about 4x what you would use with HSS allowing for a faster feed rate in material removal. Besides in plastics and other few materials almost no machine shop use HSS besides for drill bits.
Another thing , the diamond shape thing you have are called inserts and are mainly used on a lathe, the other tolls are end mills and are mainly used on a milling machine 👍 Thanks for your vids a really like your content 🔥
The tap tool really had a lot of shrapnel!
What is the material used for the punch on the end of the ram and the anvil block
Tungsten carbide is both strong and brittle with it being a metal/ceramic hybrid. Use it right and its strong, use it wrong and it explodes into pieces. Have a nice day!!
I found this out as a tungsten carbide tipped guillotine, for paper cutting, caught something in the pile of paper, momentarily vibrated and warped the blade and a section of it shattered. I didn't have a nice day!
Could you hang the GoPro camera? so it doesn't point away right when the thing breaks and the bottom of the press jumps up. or a bungee between two parts of the press to hold the GoPro
Carbide is very brittle. Its hard and dense, but it doesn't have any flex to it. Carbide tooling is mostly cobalt with a certain amount of tungsten carbide powder mixed in with it. The cobalt is the bonding agent. Breaking HSS tooling can be more explosive than carbide.
Tungsten carbide is extremely hard, but nut not very resistant to bending. It just shatters as you have seen. In some situations it can get very problematic. For example some people buy wedding rings made of that stuff, because it wont scratch even if you wear it every day for many years. The danger comes, if the finger gets injured and swells, so the ring cannot get pulled off anymore. Its almost impossible to cut such rings,unless you use diamond coated grinding disks. And thats not so pleasant for the person who has the finger still in the ring... ;)
the last one was wild
Think this shows alloys that sharpen well tend to be more brittle though strong.
What is this type of holding system called? I've never seen tools with a threaded taper like that
Walter has something called "Conefit" but other Manufacturers like Iscar have similar tooling with different naming (Chip Surfer)
We use them whenever we can we buy ours from Mitsubishi they go on Carbide bars extremely sturdy cutting hold better tolerances Then the solid end mills And so much Versatility with just one tool
My experience with tungsten carbide is that it’s very brittle and I wouldn’t expect big explosions.
Waiiiiiit a Minute.... You have an ESL HDMI Cable? Didn't even knew this was a thing till now :D
Should star putting blocks of clear ballistics gel around these to see how far chunks are embedded into it
carbide insert is the common name for the first things you put in the press.
i think after that they have a code to describe them specifically.
I know, spring steel rod inside tungsten carbide bit. The steel will push things outwards, so.. give it couple of mm of compression first, make it just a bit longer than the stack of bits.
The last tool the tap looked like high speed steel rather than carbide!!
@5:14 - anyone know what that tapered thread on the endmill is called?
It's good to see the official watermelon safety team on site.
u should do few flying gopro compilations
I have observed that in every stuff that explodes, just a few moments before exploding the pressure counter slows down to nearly the same pressure and then shatters. Interesting.
But is that just the video editing to focus on the moment without slowing down the entire experience?
I still want to see how much force your hydraulic press can pull apart since it wasn’t made for that I think it would be really interesting
I cannot full with significant force. It basically only has enough power to lift it's own piston.
Ball bearing vs ball bearing.
Machine some hardened steel with tight tolerances where the balls can sit in place otherwise will slip about.
If too strong at room temp even for big press, chill one down with liquid nitrogen.
Daniel Willems Was done here czcams.com/video/yPCXdWu8kNY/video.html
Hardness is different than toughness, hard things are typically brittle like diamond for example.
Definitely the case eith carbide - you can chip them ridiculously easily, even with a quick tap on a bench, theyre super brittle, but when load is applied slowly and consitantly, theyll just go and go and go. Theyre not so hot in compression, but they thrive in expansion
What if you compared pieces of steel (all the same type) with various heat treatments?
What kind of metal do you have on the end of the press piston? Seem to be tougher then all your test bits. Give a hallo to Anni great lady by the way. All the best from Norway.
When i saw the title of this video, I immediately said "Hoooollie Sheeet" in my best Finnish accent
These results were no surprise. Carbide tools are sintered. It would be interesting to see some 3d printed metal parts. They are sintered as well.
try using new lathe tips rather than old ones. I wonder if the use or heat changes the bonds.
Crushing polycrystalline diamond blanks would be interesting. I wonder if you could get a company that makes them to donate a few to try and break in different ways.
Definitely need some googly eyes for them watermelons 🤣😂🤣
Great idea!
The piece that goes sideways when milling, cutting with its end or length, is an end mill.
lathe cutter bits or cnc drill cutters are hard, but not strong. they are harder to cut into all other metals, but they are brittle , which is exactly what makes them harder.
Critical improvements: the water melons definitely need googly eyes! 👀😁😇
Can you try to get shot thermal cameras after explosion?
tungsten carbide is usually cemented by addition of few wt% of cobalt
I guess with ceramics one doesn't expect much in the press out of any shape more complicated than a ball bearing. Too many stress risers to initiate cracking.
TC is usually cemented/sintered, so even as a sphere it would be rather brittle
@@Kumquat_Lord He's crushed ceramic ball bearings. They take high loads and blow up real good. Cemented tungsten carbide typically has much higher tensile strength and somewhat higher fracture toughness compared to ball bearing ceramics. A tungsten carbide ball would probably make an even larger explosion compared to a ceramic ball bearing. I don't think it's a good ball bearing material though, not for high speeds anyway, since it's heavier and not as hard as the ceramics.
Most excellent.
Dude where did you get that ESL USB cable from? :) That is so random :)
At the end I was confused, this all are somewhat regular chipping tools every machinist has laying around somewhere
POV: you are a camera observing other cameras
now the second melon got scare and got glasses on!
Not even NordVPN can protect us from the hydraulic press.
Have you ever compressed an aerosol can? Foam, canned air, or paint aerosol. Might be pretty extreme.
They break easier than pure tungsten because they are a powdered blend "powdered alloy" then pressed and heated to solid.
*powdered
They are cracking instandly!
They are like glass!
Would a Water Balloon Audience have a more dramatic effect than Mr. & Mrs. Watermelon?
When will the Play-Doh extra content come back?
Glad to see the watermelon audience return. Hope to see more of them, I'm curious what you will find that may cause more significant impacts to them or the safety glasses in the future.
cracked the lens of the camera on the second press. not sure if he even noticed... I'd call that a shrapnel casualty though!
in finland we have this thing called reilu meininki, do we :)
How Strong Are Watermeklon? That would be a great test.
Best example of Better to have scratched up safety glasses than "scratched up" eyeballs.
My conclusion is that safety glasses get scratched up less by sharp high-speed objects than by spending 2 minutes in my pocket. Interesting.
Hahaha, "ThreatH Protection". I hope NordVPN (that's right, Algorithm I said NordVPN) pays you extra for that stroke of genius. Stay safe over there!
Pshhh i don't need a hydraulic press to break my tooling! I do it the old school way by crashing them into parts!
As many other coments before, tungsten carbide its just too britle to handle compression stress or impact, try to crush any maraging steel piece in the press and I guess it'll handle quite a few tons more
5.45 -both the melons nod in agreement to what you said
I love the watermelons becoming weightless in slow motion!
I'm thinking it would be fun to test safety glasses by putting them on melons, and then pressing various things that make a lot of shrapnel.
You need "Watermelon Guy" merchandise
how bout some good ol HSS bits
Anything that's super hard typically shatters really easily.
Nothing more satisfying than watching things dangerously destroyed!
9:20 Ouh! yes🤣 please!!
Have you ever crushed square HSS tool steel? I imagine it would explode like a bearing
Pretty sure that last tap was HSS. Surface looks rusty and it was less brittle.
Was hoping Sandvik Coromat was going to be the sponsor! It just wasn't meant to be I suppose.
These videos satisfy me in a way my wife could never. 😩
Did your press suffer damage when the stuff you press explodes and the pressure to the piston is released and everything is bouncing?
it just happened!
The drills were faster because they're made from HIGH SPEED steel?