In addition to what others have said about the ceramic inserts, nickel alloys like inconel are also highly thermally stable so you dont have to worry about large temperature causing parts to be unable to be machine to tolerance.
Also the design of these high speed cutting tools are meant to remove the material so fast and the heat is carried away from the part in the chips. Once you get the rpm married to the feed rate for each cutting edge (per tooth) you can acquire an amazing show of material removal with optimum heat transfer!
Thanks for the info. I'm mostly just a hobbyist at this stuff, so I don't have that much info about this. Tungsten carbide's the only form of carbide I've used. Good to learn more!
That is amazing. I can't believe those cutters put up with that abuse. And to naysayers: You can use Carbide tooling with Inconel just at much slower speeds.
High feed milling tools also does not require coolant, since it needs the heat, it just cuts better, im not that experienced with them. but that ive seen and heard. correct me if im wrong. please:)
@bradenn Of course. Coated ceramics or diamond is the only thing you can use on this stuff. Certain grades of carbide will cut it, but it's very hard on it.
@MegaMarclar Ceamic dissipates heat quicker than almost ANYTHING. Which is why F1 cars use ceramic disk brakes, instead of metal ones. Cool tip = long life.
thats sort of what I meant. They get very hot and can deal with it, but once they get to a certain temperature, as long as the feeds and speeds stay the same, the tip wont heat up or cool down, it will stay at a steady temp, and be able to cut fine.
@TheShiningmaster most of the heat should be going into the chips (that's why they're glowing red), and inconel will expand less when it's hot than aluminum or common stainless steels.
@greatdestroyer1 Yeah, but in the end, I found that the Seco ceramic with nitride coating gave us the best tool life and finish. But to run it at the surface footage Seco specfied, we had to max out our spindle speed @ 10,000. It sounded like a jet engine!
Inconel? That's balls! Wire it (EDM in some fashion). non-contact, no crashing, no inserts, no tool wear issues. However, pretty cool man! 10/10 I'd watch it break. Nice.
@greatdestroyer1 Your old Fadal machines still have an advantage over this Haas machine, though, and that is rigidity. Haas machines were not made for doing heavy cutting.
The way to think of how this tool works is like a hot knife through butter. The inserts get so hot they just destroy the material as it cuts it off. Don't get me wrong that part is super hot when those tools get done running. Coolant goes to an instant boil inside those pockets for the carbide tool that is used after.
CNC machines with ceramic blades freak all the old machinists. I get it. they are scared of the effect of a blade at that rate of feed and speed. It works and it's amazing!
Yep. Looks like a main axle for either a gas-turbine- or a turbofan- engine. Or maybe even a steam-turbine for high temperature nuclear applications, but the size makes the last option unlikely. Anyways, a high-temperature and high speed axle of some sort.
No, Ceramics can Handle heat better, often are even very good in heat shielding (Space shuttle tiles?) because they stay strong at these high temperatures don't need to cool down a lot. It would even be better if they isolate the heat a bit, because the steel milling body will be staying a bit cooler.
Ceramics are very susceptible to cracking from heat differences. Applying coolant when it's running this hot could cause them to literally explode from the thermal shock. Ceramics are also much better at handling the temperature than carbide or high speed steel. They've got much lower thermal expansion rates and soften much more slowly, so keeping cool isn't as important.
I work for DRIL QUIP in Houston, TX Ceramic is must on Inconel rough cut and finish it up with carbide. High RPM and Feed rate on both, carbide and Inconel. Coolant or not its up to your machine, if your machine can handle S10000 rpm or not or S7000 rpm like HAAS. You be the Judge.
aha, oil drilling equipment, that would explain the use of Inconel, as the down-hole environment is usually quite hostile; certainly high-pressure, and often corrosive (sulfur compounds), high temperature, or both!
But I would imagine they would use air cause remember Inconel tends to work harden. and yes coolant would cause a lot of thermal shock to the ceramic insert.
Have you tried C5 or C6 carbide(steel-cutting grades)? Those grades are typcially used for high heat applications and I imagine you could then take deeper cuts with a carbide insert.
@thedreamliner2012 Well on the bright side atleast you have a machine that can handle 10k my old fadals cannot. Anything over 8.5 and I start to get worried.
Why no coolant??? as per i know, coolant is must in machining operation like that, it will reduce the cutting tool life.. Please someone clarify my doubt
Gough Custom +1 the same with boron nidtride, you shouldn't forget that Carbides keep their hardness up to 1000°C, Ceramic up to 1200°C and Boron nitride up 2000°C, you can use cooling lubricant with Carbides (I just use cooling lubricant when milling (but often dry) and at turning I use it for finishing if the workpiece is stainless steel). If you use coolant with ceramic or Boron nitride tools/inserts it my break faster than you could stop the feed of cooling lubricant...
Ryan Willis Gough Custom is correct and so is Ryan Willis. I used a BXP tool with ceramic inserts cutting ring grooves that are inlayed with Inconel. Never use coolant or air! Ceramic insert feather light but take a hell of a beating. They like to run hot!!!!!!!!!!!!!!!!!!!!!!!!!! \m/
Hi. This is a beautiful video!!. I have a lot of question about it. What was the Cutting speed and feed? This is a round inserts? What was the Ap? What was the tool life? Which kind of holder use?
If ceramic cuts the part machining time down by 6 hrs how long did it take total time with carbide? Also if the 718 is a 40 hrc how much harder can it get by work hardening from the cutter?
+Jeffrey Shook Hard composites like ceramics are extremely subject to thermal fracture. Ceramic matrix composites have microscopic cracks within their substrate that produces a very low coefficient of linear expansion, 7-10 at the high end, and an almost non existent modulus of elasticity (.03-.05 @ 10^(6) PSI). Because of this, modern ceramic inserts can take a huge amount of heat (more than 4000 degrees F; carbide powder tools max out at about 1600 deg. F), but if the temperature is cooled suddenly by as little as 6%, vacuous fracture and catastrophic failure occur. In reality coolants are used in machining for lubricity and chip evacuation, not to cool. Actually, when a tool is in the cut, the material being cut is brought to near its melting point by friction. If this fails to occur, then the cutting tool chips or breaks. If you look at a "C" chip from a lathe cut, the inside of the "C" is wavy and blue. This occurs when the metal being cut is brought to its plastic state by friction. When the correct combination of SFM and chip load is achieved, even Cobalt and carbide tooling don't require coolant in most materials. The heat stays in the chip, so the material left remains cool. The exceptions to this is drilling, plunge milling, boring or any operation that requires chip evacuation to avoid re-cutting shavings. Also, very abrasive materials such as cast iron require surface lubrication to avoid tearing the material. Surface lubrication is also necessary when grinding, or machining fine finishes.
no.. it really isn't... it is not an either or... but an all of the above and every other, circumstantially. with exception to circumstances, like this, where coolant cannot be used... it is generally considered very desirable for many reasons, very much including to not burn the part....and or to prevent part warpage through heat transfer during and after machining which can effect with your finished dimensions . Friction does not melt the chip off... the chip is sheered with carbide tooling and yes friction is most certainly involved and heat is generated... it is perceived differently than what is considered a cutting action with a high speed steel tool.. or a hack saw... or cold forging or cutting a chain with a bolt cutter... but.... at the end of the day with the exception of actual melting.... you are using pressure and a substance that is harder than the substance being cut to cause mechanical deformation. mechanical deformation occurs in many materials long before an actual state change does.. when you exert force (the movement of energy) on a piece of wood... that energy is dispersed through the matter until it splinters... some of the electron exchange is absorbed into the wood, warming it, some is released into the atmosphere... if you continue to exert energy in such a fashion as not not allow the wood to splinter.. like with a bow drill for starting a camp fire... it will eventually become field saturated with electrons and undergo a chemical reaction, (a state change) turning into fire and gas. A very similar thing happens with metals... though, you can actually friction drill or friction weld metals... In machining, where a chip can be displaced: the heat generated in the machining operation is dispersed through coolant, the body of the work piece, the chip itself, and the atmosphere. In that process the crystalin structure of the part is effectively stretched beyond it's elastic potential and the molecules separate from each other... the heat in the form of electrons that are not absorbed by the part, the coolant, or the atmosphere are distributed in the chip... the separated chip being a much smaller body of matter, and the focal point of all of the input of energy, hasn't the ability to maintain its specific atomic state, undergoes a partial state transformation and takes on a "heat treatment color". If you tell your supervisor that you are creating a full state change into a miniature liquid melt at the cut.. you could be putting your future at risk.... what i have to say on this topic is common knowledge for most experienced machinists. A good man wont hurt you for not knowing the right words... but it could cost you; and it does help to try to find the right words.
Inconel is a man made alloy made of several different base metals. It is considered a Nickel alloy due to it's high Nickel content. It is very useful in several applications because of its toughness and stability in high heat environments. It is also a royal pain in the ass to machine compared to the average material a machinist has to cut
No They use (if i read it correct out of the infos carbide and ceramic which are pretty resistent against high temperatures) If you use cooling in such a process the cutting plate switches between cold and hot and break
As I understand, the majority of the heat goes into the cutter when machining inconel. This is why ceramic inserts are favored in this application, they love the heat. Still, looking at the chips coming off that thing, those chips are hot!
you've got something wrong. it's not the heat of the tool which lets the material get soft. i'ts the energy of the tool-impact which gets converted to heat and nearly melts the material. you can see that fact clearly in this video: /watch?v=dyN3nxcQadk
It was just a statement.. why do you have to get all personal about it.? So what if I said I wouldn't feel very accomplished for the day only running one part? Does that hurt your feelings? Also why did you send me a message.. why not reply to me here?
The whole point in hard milling is that it's done _after_ heat treat (or in allows that are crazy hard to begin to with). When the part/economics call for it it's mill-heat treat-mill, instead of mill-heat treat-grind, or even better just mill.
This is incorrect. When you say "carbide" you mean tungsten carbide WC or WC2 : it's sintered powder with a metal binder which will melt at the speeds seen in the vid. But there are other carbides that are not sintered with a metal binder, such as boron carbide, as well as several borides (titanium diboride) and nitrides. This word "carbide", in the trade, is a real misnomer.
+henrik2k i am a machinist, im actually really curious about this. ive never used ceramic cutters or cut inconel, isnt it like carbide though? flood coolant or no coolant? or blow air on it. that looks like its warping the hell out of that part, the heat isnt all going out in the chips, which looks more like dust. air wouldnt shatter it?
+Colin B. Ceramics are highly susceptible to thermal shock. The key to any inserted tool when working with inconel is to keep your feed high enough that you don't work harden the surface you're working on.
Yeah thats crazy, ive worked with really hard steels before but nothing like this. I understand not using coolant, or course. It just seemed strange that there isnt even air blowing on the cutters. If this were steel, that would be beyond work hardened and warped from that amount of heat. No way all the heat is being transferred into those dust like chips.
It's not your fault but rather that of the commercials who market tungsten carbide (sintered with nickel/cobalt binders usually) under the name "carbide", going as far as calling it "tungsten" sometimes, the same way titanium nitride coating is called "titanium coated" by some stupid companies. An elemental metal and it's oxide or carbide or nitride or boride or a combination of these are absolutely not the same thing. Boo to the commercials who induce everyone in error
Definitely not carbide inserts, I've cut inconel on a manual lathe and ONLY ceramic inserts cut effectively. Inconel destroys carbide, and thats wasted money if you ruin a bunch of carbide tooling without knowing.
In addition to what others have said about the ceramic inserts, nickel alloys like inconel are also highly thermally stable so you dont have to worry about large temperature causing parts to be unable to be machine to tolerance.
Also the design of these high speed cutting tools are meant to remove the material so fast and the heat is carried away from the part in the chips. Once you get the rpm married to the feed rate for each cutting edge (per tooth) you can acquire an amazing show of material removal with optimum heat transfer!
Thanks for the info. I'm mostly just a hobbyist at this stuff, so I don't have that much info about this. Tungsten carbide's the only form of carbide I've used. Good to learn more!
That is amazing. I can't believe those cutters put up with that abuse. And to naysayers: You can use Carbide tooling with Inconel just at much slower speeds.
Correct: Silicon Nitride 2016. Wonder what 2066 will be like?
Actually, that is not exactly true. You just need to know how to cut inconel with carbide.
@@kuei12Actually, it’s mostly true. Carbide can’t match the SFM ceiling of ceramic.
@@Icutmetal Th problem is tool life. Ceramic tool life is awful. The time/expense you spend changing tools defeats any gains.
@@kuei1215 Sure 👌
i dont even know how to approach this material..... props to every cut
High feed milling tools also does not require coolant, since it needs the heat, it just cuts better, im not that experienced with them. but that ive seen and heard. correct me if im wrong. please:)
@bradenn Of course. Coated ceramics or diamond is the only thing you can use on this stuff. Certain grades of carbide will cut it, but it's very hard on it.
@MegaMarclar Ceamic dissipates heat quicker than almost ANYTHING. Which is why F1 cars use ceramic disk brakes, instead of metal ones. Cool tip = long life.
thats sort of what I meant. They get very hot and can deal with it, but once they get to a certain temperature, as long as the feeds and speeds stay the same, the tip wont heat up or cool down, it will stay at a steady temp, and be able to cut fine.
@TheShiningmaster most of the heat should be going into the chips (that's why they're glowing red), and inconel will expand less when it's hot than aluminum or common stainless steels.
@thedreamliner2012 most "cemented carbides' will cut inconel it just might take you 2x as long and you might break a few tools along the way.
Ceramic is great and if you can machine with it and not run the inserts to fracture they can be sharpened and used again
@greatdestroyer1 Yeah, but in the end, I found that the Seco ceramic with nitride coating gave us the best tool life and finish. But to run it at the surface footage Seco specfied, we had to max out our spindle speed @ 10,000. It sounded like a jet engine!
Inconel? That's balls! Wire it (EDM in some fashion). non-contact, no crashing, no inserts, no tool wear issues. However, pretty cool man! 10/10 I'd watch it break. Nice.
Stu Capco EDM is great and all, but it takes houuuurs and hours of time to EDM parts.
+Luke Collette Not to mention frustrating and expensive!
@greatdestroyer1
Your old Fadal machines still have an advantage over this Haas machine, though, and that is rigidity. Haas machines were not made for doing heavy cutting.
it's impressive, i should try it once i have the chance.
The way to think of how this tool works is like a hot knife through butter. The inserts get so hot they just destroy the material as it cuts it off. Don't get me wrong that part is super hot when those tools get done running. Coolant goes to an instant boil inside those pockets for the carbide tool that is used after.
Really crazy fast turning in this sort marterial. Doesn't the material expant when it's this hot ?
CNC machines with ceramic blades freak all the old machinists. I get it. they are scared of the effect of a blade at that rate of feed and speed.
It works and it's amazing!
I guess you look for a change in the spark pattern to tell if your inserts are done.
Finish and noise the tool makes
Also watch for the burr to see when your ceramic tool is getting dull
Yep. Looks like a main axle for either a gas-turbine- or a turbofan- engine. Or maybe even a steam-turbine for high temperature nuclear applications, but the size makes the last option unlikely. Anyways, a high-temperature and high speed axle of some sort.
AND you want the heat to be carried away by the chip so the cutter is not damaged.
i make indrustrial diamond for mypodiamond ^^ this is amazing ive personally never liked ceramic inserts until ive used them manually
No, Ceramics can Handle heat better, often are even very good in heat shielding (Space shuttle tiles?) because they stay strong at these high temperatures don't need to cool down a lot. It would even be better if they isolate the heat a bit, because the steel milling body will be staying a bit cooler.
Great machining operation. But with a little bit more interpolation in the corner will be badass, the machine spindle will tell u tanks! 👌
WoW, my specialty is electronics but I do love this kind of amazing engineering, mind blowing using ceramics!
5D programming for the win.
@1991goth1
Correct. Cooling ceramic makes this job impossible and useless. Inconel alloys are hard machinable.
Ceramics are very susceptible to cracking from heat differences. Applying coolant when it's running this hot could cause them to literally explode from the thermal shock. Ceramics are also much better at handling the temperature than carbide or high speed steel. They've got much lower thermal expansion rates and soften much more slowly, so keeping cool isn't as important.
hell of a feed rate for such a hard material.
I work for DRIL QUIP in Houston, TX Ceramic is must on Inconel rough cut and finish it up with carbide. High RPM and Feed rate on both, carbide and Inconel. Coolant or not its up to your machine, if your machine can handle S10000 rpm or not or S7000 rpm like HAAS. You be the Judge.
Thats amazing! I would have chickened out in the first 30 seconds because of the light show
aha, oil drilling equipment, that would explain the use of Inconel, as the down-hole environment is usually quite hostile; certainly high-pressure, and often corrosive (sulfur compounds), high temperature, or both!
But I would imagine they would use air cause remember Inconel tends to work harden. and yes coolant would cause a lot of thermal shock to the ceramic insert.
What's wrong with using good ol' uncoated tool steel inserts?
Thats just insane
Have you tried C5 or C6 carbide(steel-cutting grades)? Those grades are typcially used for high heat applications and I imagine you could then take deeper cuts with a carbide insert.
Deeper cuts at much lower SFM.
does it leave bad burring on certain cuts or is it as clean as i assume?
usually when my tool is glowing I know its time to change it... how will you know with this? when nothing is left? lol
but this is rough-machineing, on final cut you use other cutters
ceramics would get to hot and damage the surface right?
it's great...best tool..hard material
Great video. What SFM were you running this at? Any info on the insert cutter being used, spindle RPM and/or feed? Just interested. Thanks!
FIRE, FIRE,FIRE! Cool.
Bet HSS would a worked too
at a cost to your tme.
not a chance
@thedreamliner2012 Well on the bright side atleast you have a machine that can handle 10k my old fadals cannot. Anything over 8.5 and I start to get worried.
i must have missed something... how is ceramic stronger than carbide?
It’s not.
sorry if this question was already asked but i was wondering why there is no coolant being used?
Thermal shock.
Why no coolant??? as per i know, coolant is must in machining operation like that, it will reduce the cutting tool life.. Please someone clarify my doubt
Thermal shock. Carbide or ceramic running at these temperatures will fracture due to thermal stresses if exposed to a coolant.
What Gough Custom said. These tools like to run hot.
Gough Custom +1 the same with boron nidtride, you shouldn't forget that Carbides keep their hardness up to 1000°C, Ceramic up to 1200°C and Boron nitride up 2000°C, you can use cooling lubricant with Carbides (I just use cooling lubricant when milling (but often dry) and at turning I use it for finishing if the workpiece is stainless steel).
If you use coolant with ceramic or Boron nitride tools/inserts it my break faster than you could stop the feed of cooling lubricant...
Ryan Willis Gough Custom is correct and so is Ryan Willis. I used a BXP tool with ceramic inserts cutting ring grooves that are inlayed with Inconel. Never use coolant or air! Ceramic insert feather light but take a hell of a beating. They like to run hot!!!!!!!!!!!!!!!!!!!!!!!!!! \m/
You know you're making money when the chips glow.
so, what is the part being worked in this vid for anyways? a gas turbine or something?
cooling??? i think its a must
Nope.
I've never had the chance to use ceramic. Just wondering why you are conventional milling and not climb milling.
Hi. This is a beautiful video!!. I have a lot of question about it.
What was the Cutting speed and feed?
This is a round inserts?
What was the Ap?
What was the tool life?
Which kind of holder use?
If ceramic cuts the part machining time down by 6 hrs how long did it take total time with carbide? Also if the 718 is a 40 hrc how much harder can it get by work hardening from the cutter?
what material is that
Hanzhen harmonic drive gear ,
strain wave reducer, robot joint , over 30 years experience
id hate to get to few of those in the neak
What is your speed and feed rate as well as depth of cut per pass? Also have you machined P550 using ceramic?
why do you not use coolant with ceramic inserts?
Jeffrey Shook the thermic shock caused by coolant would make the inserts disintegrate
i understand that now i recently got a job at a machine shop and i asked the same question lol thanks
+Jeffrey Shook Hard composites like ceramics are extremely subject to thermal fracture. Ceramic matrix composites have microscopic cracks within their substrate that produces a very low coefficient of linear expansion, 7-10 at the high end, and an almost non existent modulus of elasticity (.03-.05 @ 10^(6) PSI). Because of this, modern ceramic inserts can take a huge amount of heat (more than 4000 degrees F; carbide powder tools max out at about 1600 deg. F), but if the temperature is cooled suddenly by as little as 6%, vacuous fracture and catastrophic failure occur.
In reality coolants are used in machining for lubricity and chip evacuation, not to cool. Actually, when a tool is in the cut, the material being cut is brought to near its melting point by friction. If this fails to occur, then the cutting tool chips or breaks. If you look at a "C" chip from a lathe cut, the inside of the "C" is wavy and blue. This occurs when the metal being cut is brought to its plastic state by friction. When the correct combination of SFM and chip load is achieved, even Cobalt and carbide tooling don't require coolant in most materials. The heat stays in the chip, so the material left remains cool. The exceptions to this is drilling, plunge milling, boring or any operation that requires chip evacuation to avoid re-cutting shavings. Also, very abrasive materials such as cast iron require surface lubrication to avoid tearing the material. Surface lubrication is also necessary when grinding, or machining fine finishes.
+William Murrell Thanks for that, very good explanation.
no.. it really isn't... it is not an either or... but an all of the above and every other, circumstantially.
with exception to circumstances, like this, where coolant cannot be used... it is generally considered very desirable for many reasons, very much including to not burn the part....and or to prevent part warpage through heat transfer during and after machining which can effect with your finished dimensions . Friction does not melt the chip off... the chip is sheered with carbide tooling and yes friction is most certainly involved and heat is generated... it is perceived differently than what is considered a cutting action with a high speed steel tool.. or a hack saw... or cold forging or cutting a chain with a bolt cutter... but.... at the end of the day with the exception of actual melting.... you are using pressure and a substance that is harder than the substance being cut to cause mechanical deformation.
mechanical deformation occurs in many materials long before an actual state change does.. when you exert force (the movement of energy) on a piece of wood... that energy is dispersed through the matter until it splinters... some of the electron exchange is absorbed into the wood, warming it, some is released into the atmosphere... if you continue to exert energy in such a fashion as not not allow the wood to splinter.. like with a bow drill for starting a camp fire... it will eventually become field saturated with electrons and undergo a chemical reaction, (a state change) turning into fire and gas.
A very similar thing happens with metals... though, you can actually friction drill or friction weld metals... In machining, where a chip can be displaced: the heat generated in the machining operation is dispersed through coolant, the body of the work piece, the chip itself, and the atmosphere. In that process the crystalin structure of the part is effectively stretched beyond it's elastic potential and the molecules separate from each other... the heat in the form of electrons that are not absorbed by the part, the coolant, or the atmosphere are distributed in the chip... the separated chip being a much smaller body of matter, and the focal point of all of the input of energy, hasn't the ability to maintain its specific atomic state, undergoes a partial state transformation and takes on a "heat treatment color".
If you tell your supervisor that you are creating a full state change into a miniature liquid melt at the cut.. you could be putting your future at risk.... what i have to say on this topic is common knowledge for most experienced machinists. A good man wont hurt you for not knowing the right words... but it could cost you; and it does help to try to find the right words.
What does it mean inconel metal?
Inconel is a man made alloy made of several different base metals. It is considered a Nickel alloy due to it's high Nickel content. It is very useful in several applications because of its toughness and stability in high heat environments. It is also a royal pain in the ass to machine compared to the average material a machinist has to cut
When using Ceramic inserts you cannot have a single drop with coolant on it. that will crush them. you need the heat.
What kind of PVD coating are you using?
no cooling?
No They use (if i read it correct out of the infos carbide and ceramic which are pretty resistent against high temperatures)
If you use cooling in such a process the cutting plate switches between cold and hot and break
can you share the tools info on this video please
how does the heat effect dimensions?
As I understand, the majority of the heat goes into the cutter when machining inconel. This is why ceramic inserts are favored in this application, they love the heat. Still, looking at the chips coming off that thing, those chips are hot!
well, I'm pretty sure the workpiece will be pretty hot, although not as hot as the chips
right^^ i've forgot that
On a cnc mill shouldn't you be using coolant or would that gum up the insert
+andrew w Ceramic likes the heat. Softens the metal which reduces forces required to remove the metal.
plus the coolant can cause thermal shock to the insert, which will crack it, especially ceramics, they are super touchy
Crap that looks hotter than hot lava!!
no because the temperature goes into the chips
you've got something wrong. it's not the heat of the tool which lets the material get soft.
i'ts the energy of the tool-impact which gets converted to heat and nearly melts the material. you can see that fact clearly in this video: /watch?v=dyN3nxcQadk
You're using air on this, no?
No swarf only molted metal, dam.
Imagine what a machinist from the 1930s would have to say if he watched this . Science fiction ! Alien technology ! WTF is that?
Pesky downhole tools? Damn non-mag directional requirements?
It was just a statement.. why do you have to get all personal about it.? So what if I said I wouldn't feel very accomplished for the day only running one part? Does that hurt your feelings? Also why did you send me a message.. why not reply to me here?
thats novel, heat treatment in the milling mch LOL
The whole point in hard milling is that it's done _after_ heat treat (or in allows that are crazy hard to begin to with).
When the part/economics call for it it's mill-heat treat-mill, instead of mill-heat treat-grind, or even better just mill.
nope its a battery insert for hallibutron I've done a shit load of them easy job :)
please: cutting depth, feed, rpm. please..........
"cooling ?"
"no thanks, i like the sparkles !"
u dont use coolant on ceramics, the thermoshock would kill the inserts almost instantly. They actually thrive in the heat.
haydebedoit
yes, i forgot :D
This is incorrect. When you say "carbide" you mean tungsten carbide WC or WC2 : it's sintered powder with a metal binder which will melt at the speeds seen in the vid. But there are other carbides that are not sintered with a metal binder, such as boron carbide, as well as several borides (titanium diboride) and nitrides. This word "carbide", in the trade, is a real misnomer.
This is not the best machine for hard milling anyway. I'd be using a larger Fadal with box ways or even an Okuma.
that fuckers getting way hot, no air blowing on it or nothing eh? seems like the speeds way to high
+henrik2k i am a machinist, im actually really curious about this. ive never used ceramic cutters or cut inconel, isnt it like carbide though? flood coolant or no coolant? or blow air on it. that looks like its warping the hell out of that part, the heat isnt all going out in the chips, which looks more like dust. air wouldnt shatter it?
+Colin B. You can't flood cool ceramic, I don't think you can even air cool. I'm also pretty sure they compensate for warping.
+Colin B. Ceramics are highly susceptible to thermal shock. The key to any inserted tool when working with inconel is to keep your feed high enough that you don't work harden the surface you're working on.
+Colin B. The keyword here is "Inconel"
An Inconel 600 can have up to 72% nickel. It's a really a tough one to machine or punch.
Yeah thats crazy, ive worked with really hard steels before but nothing like this. I understand not using coolant, or course. It just seemed strange that there isnt even air blowing on the cutters. If this were steel, that would be beyond work hardened and warped from that amount of heat. No way all the heat is being transferred into those dust like chips.
It's not your fault but rather that of the commercials who market tungsten carbide (sintered with nickel/cobalt binders usually) under the name "carbide", going as far as calling it "tungsten" sometimes, the same way titanium nitride coating is called "titanium coated" by some stupid companies. An elemental metal and it's oxide or carbide or nitride or boride or a combination of these are absolutely not the same thing. Boo to the commercials who induce everyone in error
Definitely not carbide inserts, I've cut inconel on a manual lathe and ONLY ceramic inserts cut effectively. Inconel destroys carbide, and thats wasted money if you ruin a bunch of carbide tooling without knowing.
Not true at all. Next time you turn inconel try this for starting:
Uncoated carbide
200sfpm
.02"doc
.02"-.025" ipr
6 hrs a part... I wouldn't feel very accomplished at the end of the day..
Hmm..looks like the work would get real hot...too hot
k
That's awesome! Inco is a bitch!
If that one part sold for $15,000 you wouldn't feel accomplished.
this is not the machine for milling..... period
Lack of coolant is sickening haha
Not everything is designed to run with coolant. most steels cut better with simply air blast or maybe a squirt of wd-40. The more you know......
Waist a lot of time
ma che cosa è?!!!