The explosions are in fact from the combustion of carbon which heats the metal particles to a liquid state at least internally. As the outside of the spark cools the rapidly expanding carbon gases burst the shell causing a small explosion. Try your experiment again with a piece of glass perpendicular to the trajectory of the sparks. I would be curious if the high speed camera can clearly show the explosive sparks behaving as a liquid. -Mike
Challenge accepted... Dang, that's beautiful... Can't dislike this. Oh, one thing I noticed when an Oxyacetylene torch was used to cut through metal (personal experience), it made little balls filled with air. It might be the oxygen in the air causing certain metals, containing carbon, to explode when being put on a grinder.
I think the carbon is acting as a fuel causing repid oxidation whin it encounters both heat and oxygen. Carbon is an important part of nearly all fuels.
I think there’s a runaway nitrous oxide reaction somewhere in your garage during your “ium “ phase of the video:) Merry Christmas btw. I look forward to more videos soon on both of your channels. Btw. Where’s the video of your cannon shooting. I watched every episode as they came out and I was hoping you would have it out already. Also lol. I hope you make another cannon without the void and film it the same way. I learned so much from you machining everything:)
Its carbon and metal comming off together ans and as its already hot and flying its getting hotter like bellows in a harth. that majes some parts burn out and fall away making tbe branches
As the flow of particles comes off the rough grinder (fine grit even) homogeneous metals come out in their color and cool. When you have alloy metal that comes out you might have one or three to a particle. Fe, Co, Mn, etc. Try Stainless! - as the changing cooling of each is different it is going crazy and shatter, glowing with heat as it goes. Try Stainless and try Oxygen flowing - more flame and fire... Carbon isn't needed - you put in pure (maybe) Ti and it didn't have carbon. It is the oxygen that does the twinkle.
"Of course I talk to myself" Tee shirt, I would have bought. Be careful, be safe don't make any mistakes. Your wiggling, damn it, Pay attention! Ha. Ha. Ha.
Threre are channels related to slow-motion, or chemistry, or crafts or physics, or guns. But on this channel topics mix together so that author not only feeds you with what is called content but you can also see how those are applicable to each other. Pressing like button for sure.
@@FarmCraft101 I think I figured it out a different solution for you but you would need to make a rig to test it, and test metals with known properties (so test your test materials at a lab or buy materials with definite characteristics). I think it has to do with the speed that heat diffuses through out it/the speed that the metal is burnt (wrote my first comment and came up with the theory before I heard yours and about the burning iron),the thermal expansion coefficient, and how brittle the metal is. So it would be like putting a blow torch on a piece of glass how if you heat it up slow enough it melts but if you hit it with too much heat too fast it just shatters. I wrote another comment about it first but now that I have watched the second half of the video I don't know.
Great vid, I know i'm late but i didn't see this answered in the comments, the seven Metals discovered in 'antiquity' don't have the ium suffix. All the metals from before actual metallurgy (read: not Voodoo and experimentation) existed were dubbed 'The Metals of Antiquity' and are the seven metals which humanity used in prehistoric times: gold, silver, copper, tin, lead, iron, and mercury. Everything else after that had the ium suffix. As for which is right or wrong, to be that guy, technically it is Aluminium, and American English (Simplified English, is joke, don't shoot) removes a lot of in my opinion, letters that aren't necessarily needed. Typically the fundamental meaning stays the same with exceptions. I personally interchange both Aluminium and Aluminum without thought because it's the same thing and only pedants like me care. The more you know and all that.
Coming form the future: the channel *Rob Words* has a good explanation about "aluminum" and "aluminium" in a video explaining how the elements in the periodic table got their names. *Spoil alert:* both spellings are right, pretty much like color and colour, center and centre, tire and tyre.
This from a dumb ole mountain man, that was dang interesting! I really enjoyed and understood most of it except for the awlyouminnyiyoumin part, but ya done good son! Thanks for a great video, I believe you could make an interesting talk about a video why molasses runs slow uphill in the winter time. Take care and keep yer powder dry!
We all wonder about the answers to some questions. It is easiest to just think about it and use our intuition. The problem is we frequently end up thinking we then have the correct answer, especially after we forget the actual source of the “information” that we pulled from thin air. We do need to follow the lead of Smarter Everyday and go to the trouble of actually learning. It is common to believe we know more than we actually do. RUclips producers need to be careful to not encourage sloppy thinking and to provide good information.
[laugh if you must] High school education here :) Wouldn't it merely be an issue of "heat" which then causes the heated atoms to increase to an accelerated pace until they end up dispersing which then causes their elements to make contact with the air giving us sparks?
Amateur Blacksmith here, I know that with enough surface area steel, iron, and titanium all combust in the presence of oxygen when exposed to a flame or other source of heat; The small pieces of hot sparks are the metal burning up as they fly. The higher carbon content likely adds to the surface area making the sparks burn faster and hotter making them more likely to explode, the brighter the spark the hotter the spark is, allowing for easier catastrophic combustion(Explode)
I reckon the explosion has nothing to do with the carbon itself but much rather with the ductility of the iron alloy. Mild steel is a rather soft material but at the same time very ductile whereas high carbon steel is much harder but also more brittle. So let's take a look at the mild steel first: I reckon that the mild steel when grinded deforms before it breaks away. Therefore the small metal particles (that then form sparks) are rather big compared to harder steel, and I guess they are more rounded. For that reason they have a small surface area compared to their volume. If you watch the high speed footage of mild steel sparks you see them emitting a very bright yellow light in the center, but the further left they travel they seem to become darker but also more red. Therefore I would say these sparks just do not have enough surface compared to their volume to keep up the high temperature so they just cool down and fade away. Now we look at the high carbon steel: As I already mentioned the carbon makes it harder but more brittle. Therefore I reckon when grinded down there is much less deformation happening. The metal particles are probably torn away much more violently. Therefore they are smaller and have many sharp edges which increases their surface area in relation to their volume. For that reason those sparks are burning much faster. If you take a look at the footage you can see that those sparks seem to either fade away or explode so I'd guess those sparks that have the highest surface area will burn the fastest and get hotter and eventually explode whereas those sparks with smaller surface areas just cool down. Now for the explosion: As we have already established high carbon steel is hard and brittle. If a steel particle is hot enough and has enough surface area to further increase its temperature by burning it will expand. However this expansion creates lots of internal stress which eventually causes the spark to explode. If you want to verify or falsify this theory you should collect sparks from mild steel as well as high carbon steel and take a look at them through a lens or a microscope. However when collecting the particles ground away from high carbon steel you somehow have to cool down those sparks that tend to explode. Maybe take a piece of dripping wet cloth and place it so that the sparks are flying into it and the water cools them down. Under the microscope the particles ground away from the mild steel should appear more rounded with deformed edges whereas the particles from high carbon steel should look much chunkier with sharp edges and little deformation. Also the high carbon steel particles should be significantly smaller.
Hey man, this has got to stop. I did learn something from your bullet skipping video. Then acted like a smart ass while drinking with buddies. Now you show more interesting info. I bet I won't be able to shut up in front of others again. If I continue to learn more like this, I will be too smart in front of my buddies for my own good. It was an interesting video though.
Go back to Organic Chemistry. It has much to with the number of electrons available to be taken or shed. For each electron, there must be a certain level of energy to strip it from carbon or add it to the carbon. There is a bit of a chain reaction of steps in the conversion process. I will even venture to say that it does not take much energy to break off chunks of cast iron, hence low sparking. It takes LOTS of energy to take even a little bit of high carbon steel chunks away from the rest of the sample. That energy is in heat, and a that heat (energy) will hang onto the little metal chunks longer, as the chain reaction continues as the chunk is flying through the air.
The purpose of language is to transfer ideas and information inside one humans head into anothers. So spelling differences and bad grammar, at the end of the day do not really matter as long as the correct information and ideas are transferred. Who cares if it is Aluminium/Aluminum, colour/color, aeroplane/airplane or grey/gray, they are close enough for people with any sense to guess.
Aluminum was the original name but it was latterly changed to be in line with other elements. The craziest thing is that Webster changed so much to make English simpler e.g. removing the letter U from words such as colour, favour, harbour etc. so surely standardising would have made sense although in this case they're names not words. BTW it's not leadum but I'm sure you know that really, you plumbum! lol
THERMAL EXPANSION CAUSING BRITTLE METALS TO EXPAND FASTER THAN THEY CAN DEFORM LEADING TO AN EXPLOSION? So it would be like putting a blow torch on a piece of glass how if you heat it up slow enough it melts but if you hit it with too much heat too fast it just shatters. Well that is my guess... I think it has something to do with a combination of the brittleness of the metals, the speed that the heat spreads through the metal and thermal expansion coefficient. So with the mild steel as the heat spreads through the little chips it is ductile enough to deform while the high carbon steel gets hot enough fast enough and is brittle enough causing the hot parts to expand and flake off/apart. The fact that Titanium also has this branching pattern backs this up but the more metals you can test the better of a result we can find. you should buy small pieces of metals and list the info about the brittleness, the thermal expansion coefficient and how fast the heat spreads through the metals and see if we can nail down some parameters. We also need some sort of way to classify this so we would need to maybe count the total number of sparks and the percent of them that "branch" so maybe like counts on every 100 images or something like that? but the area on the grind stone needs to be constant and hopefully you can create a device to apply constant pressure to eliminate as many variables as possible. Those are beautiful shots with some unknown underlying science! My favorite kind of youtube videos, and hopefully someone smarter than me can read my comment and make sense of it.
I JUST had a discussion with my wife about spark testing. Pretty sure we were watching some show and they had the exact WRONG sparks you'd expect. Maybe they were grinding Titanium and getting orange sparks. Can't remember. I was yelling at the TV.
It is more than simple chemistry. Annealed high-carbon steel does not spark near as much as hardened (quenched in water) high carbon steel. Blacksmiths know this when they make fire starting steels.
Awesome, again! For the higher-carbon steel, I posited at the start that it was the carbon reacting with oxygen. I can't see what else it can be. Also, it's called NICKELODIUM :-)
I don't know how it applies to grinding, because I know essentially nothing about chemistry, but the sparks thrown by very hot blacksmithing of high carbon content iron seem to closely resemble these sparks. I believe I've heard blacksmiths call it "the carbon being driven out" as well. In fact, I think I can remember seeing iron heated to welding temperatures spontaneously sparking as it comes out of the forge. As a layperson in this subject, that seems to lend credence to the co2 gas explosion idea.
I am thinking that with the presence of carbon making the molecules spread out the iron molecules. There for the outside will cool faster in the air. With the outside being cooler then the inside it builds pressure and explodes like popcorn. Just my thoughts. Awesome video man.
As a metal fabricator, I have seen/know this but this is very good info for anyone who doesn't know this has many uses and can save you in a pinch no thumbs down from me it's good knowledge for the people who don't know
The explosion effect also happens with the titanium. And the heat of solution/dissolution is really quite negligible compared to everything else going on. So I think the carbon thing is a red herring. This phenomena appears to correlate with the material hardness. So my theory is that it has to do with a sharp implosion of a hard skin of solid metal which first forms on the outside of the molten blob and is then put under increasing stress as more metal solidifies and shrinks inside this shell. I think a situation like in a Prince Rupert's drop develops, but which fails to remain intact, probably due to irregularities. Then the energy of the implosion disperses tiny droplets of fresh un-oxidized metal into the air where it promptly burns and creates the crows' feet effect.
There is a Japanese firework called "Senko hanabi." It's a completely different process and no iron involved but creates the same branching pattern. The only common factor is carbon. So, I'm guessing that as you said when the heated atomic carbon oxidizes it fractures the structure of the spark. Side note: This shouldn't happen when you grind graphite because the carbon is in a highly stable state.
My theory is that as the hot metal leaves the wheel, it undergoes rapid cooling to the point where a thermal shock is induced and the near molten metal explodes. The carbon plays a role in this by raising the freezing/melting point of the metal and making the shock easier to achieve.
why do some of the sparks in slow mo oscillate in color from red to blues and even possibly greens? is it just reflecting light? different tempering levels? different oxidation states?
*This is one of the best videos I've seen on YT in a long time. I especially liked the sound effects added to the slo-mo. Like you, I've always wondered about the exploding "fireworks" effect, and I came to the same conclusion that you did... it's probably caused by tiny bits of rapidly expanding gas within the particles. I never noticed that it doesn't happen with low carbon steel, so I hadn't come to the CO2 explanation that you did, but I suspect you're right. I don't think you mentioned that the titanium sparks are always white, compared to the orange sparks from iron or steel. Metallurgy is like witchcraft to me...* Almost 20 years ago, I actually had a side business on eBay selling "Dragon Blocks," which were hunks of titanium securely bolted to a heavy duty piece of angle iron. That was after I found out that certain people have a peculiar fascination with bolting chunks of titanium under the frames of their cars, which were also equipped with lift systems. What they would do, is get going really fast (at night) and then drop the car until the titanium contacted the pavement and started throwing sparks everywhere. One of my customers sent me a video, and it was truly a sight to see. He must have gone at least 200 feet. Of course, they were all doing it on their own private roads. I can attest to the fact that titanium is a bitch to work with, after many broken drill bits and taps. Cobalt drills and slow speeds worked best.
The explosions are in fact from the combustion of carbon which heats the metal particles to a liquid state at least internally. As the outside of the spark cools the rapidly expanding carbon gases burst the shell causing a small explosion. Try your experiment again with a piece of glass perpendicular to the trajectory of the sparks. I would be curious if the high speed camera can clearly show the explosive sparks behaving as a liquid. -Mike
Challenge accepted...
Dang, that's beautiful... Can't dislike this.
Oh, one thing I noticed when an Oxyacetylene torch was used to cut through metal (personal experience), it made little balls filled with air. It might be the oxygen in the air causing certain metals, containing carbon, to explode when being put on a grinder.
I remember learning this in A school. Thanks for the refresher!!!
I think the carbon is acting as a fuel causing repid oxidation whin it encounters both heat and oxygen. Carbon is an important part of nearly all fuels.
Well done sparky....and Merry CHRISTmas.
really awesome quality video, excellent job
I think there’s a runaway nitrous oxide reaction somewhere in your garage during your “ium “ phase of the video:)
Merry Christmas btw. I look forward to more videos soon on both of your channels. Btw. Where’s the video of your cannon shooting. I watched every episode as they came out and I was hoping you would have it out already. Also lol. I hope you make another cannon without the void and film it the same way. I learned so much from you machining everything:)
Wow never knew that, amazing thanks for sharing!
"at this speed we see them for what they are" that's dark
Its carbon and metal comming off together ans and as its already hot and flying its getting hotter like bellows in a harth. that majes some parts burn out and fall away making tbe branches
As the flow of particles comes off the rough grinder (fine grit even) homogeneous metals come out in their color and cool. When you have alloy metal that comes out you might have one or three to a particle. Fe, Co, Mn, etc. Try Stainless! - as the changing cooling of each is different it is going crazy and shatter, glowing with heat as it goes. Try Stainless and try Oxygen flowing - more flame and fire... Carbon isn't needed - you put in pure (maybe) Ti and it didn't have carbon. It is the oxygen that does the twinkle.
Will you be fixing the G clamp?
internal stress?
I hear more people saying it more like alumin-yum than I do alumini-um
"Of course I talk to myself" Tee shirt, I would have bought. Be careful, be safe don't make any mistakes. Your wiggling, damn it, Pay attention! Ha. Ha. Ha.
You just taught me more about Spark Testing than all the hundreds of Black smithing videos i've watched for years. THX
You forgot Helium. From the word "Hell", the sun and Yum, for delicious.
Threre are channels related to slow-motion, or chemistry, or crafts or physics, or guns. But on this channel topics mix together so that author not only feeds you with what is called content but you can also see how those are applicable to each other. Pressing like button for sure.
You're right on the money my man its co2 building pressure that causes the branching...that was a fantastic and well thought out guess
Up the contrast on that slowmo and it looks like a galaxy being formed
My guess: CO2 makes it like a soap bubble, and when the iron bubble breaks, it throws glowing sparks around.
Well that's beautiful! Who needs fireworks when can have film like that?
Are the explosions the actual sounds slowed down?
No. All slow motion sounds are artificial, at least when things are slowed more than just a few X of normal.
@@FarmCraft101 I think I figured it out a different solution for you but you would need to make a rig to test it, and test metals with known properties (so test your test materials at a lab or buy materials with definite characteristics). I think it has to do with the speed that heat diffuses through out it/the speed that the metal is burnt (wrote my first comment and came up with the theory before I heard yours and about the burning iron),the thermal expansion coefficient, and how brittle the metal is. So it would be like putting a blow torch on a piece of glass how if you heat it up slow enough it melts but if you hit it with too much heat too fast it just shatters. I wrote another comment about it first but now that I have watched the second half of the video I don't know.
The aluminum ball got a like but this one got a subscribe. Thank you brother!
Great vid, I know i'm late but i didn't see this answered in the comments, the seven Metals discovered in 'antiquity' don't have the ium suffix.
All the metals from before actual metallurgy (read: not Voodoo and experimentation) existed were dubbed 'The Metals of Antiquity' and are the seven metals which humanity used in prehistoric times: gold, silver, copper, tin, lead, iron, and mercury. Everything else after that had the ium suffix.
As for which is right or wrong, to be that guy, technically it is Aluminium, and American English (Simplified English, is joke, don't shoot) removes a lot of in my opinion, letters that aren't necessarily needed. Typically the fundamental meaning stays the same with exceptions. I personally interchange both Aluminium and Aluminum without thought because it's the same thing and only pedants like me care. The more you know and all that.
Coming form the future: the channel *Rob Words* has a good explanation about "aluminum" and "aluminium" in a video explaining how the elements in the periodic table got their names.
*Spoil alert:* both spellings are right, pretty much like color and colour, center and centre, tire and tyre.
This from a dumb ole mountain man, that was dang interesting! I really enjoyed and understood most of it except for the awlyouminnyiyoumin part, but ya done good son! Thanks for a great video, I believe you could make an interesting talk about a video why molasses runs slow uphill in the winter time. Take care and keep yer powder dry!
material produces the fewest sparks during a spark test is tungsten carbide or titanium?
We all wonder about the answers to some questions. It is easiest to just think about it and use our intuition. The problem is we frequently end up thinking we then have the correct answer, especially after we forget the actual source of the “information” that we pulled from thin air. We do need to follow the lead of Smarter Everyday and go to the trouble of actually learning. It is common to believe we know more than we actually do. RUclips producers need to be careful to not encourage sloppy thinking and to provide good information.
[laugh if you must] High school education here :) Wouldn't it merely be an issue of "heat" which then causes the heated atoms to increase to an accelerated pace until they end up dispersing which then causes their elements to make contact with the air giving us sparks?
Amateur Blacksmith here, I know that with enough surface area steel, iron, and titanium all combust in the presence of oxygen when exposed to a flame or other source of heat; The small pieces of hot sparks are the metal burning up as they fly. The higher carbon content likely adds to the surface area making the sparks burn faster and hotter making them more likely to explode, the brighter the spark the hotter the spark is, allowing for easier catastrophic combustion(Explode)
I believe that magnesium DOES spark. Fire starters, doncha know. Or is it the iron that glows? Hmmmm. Have to think about that some more.
I reckon the explosion has nothing to do with the carbon itself but much rather with the ductility of the iron alloy. Mild steel is a rather soft material but at the same time very ductile whereas high carbon steel is much harder but also more brittle.
So let's take a look at the mild steel first:
I reckon that the mild steel when grinded deforms before it breaks away. Therefore the small metal particles (that then form sparks) are rather big compared to harder steel, and I guess they are more rounded. For that reason they have a small surface area compared to their volume. If you watch the high speed footage of mild steel sparks you see them emitting a very bright yellow light in the center, but the further left they travel they seem to become darker but also more red. Therefore I would say these sparks just do not have enough surface compared to their volume to keep up the high temperature so they just cool down and fade away.
Now we look at the high carbon steel:
As I already mentioned the carbon makes it harder but more brittle. Therefore I reckon when grinded down there is much less deformation happening. The metal particles are probably torn away much more violently. Therefore they are smaller and have many sharp edges which increases their surface area in relation to their volume. For that reason those sparks are burning much faster. If you take a look at the footage you can see that those sparks seem to either fade away or explode so I'd guess those sparks that have the highest surface area will burn the fastest and get hotter and eventually explode whereas those sparks with smaller surface areas just cool down.
Now for the explosion: As we have already established high carbon steel is hard and brittle. If a steel particle is hot enough and has enough surface area to further increase its temperature by burning it will expand. However this expansion creates lots of internal stress which eventually causes the spark to explode.
If you want to verify or falsify this theory you should collect sparks from mild steel as well as high carbon steel and take a look at them through a lens or a microscope. However when collecting the particles ground away from high carbon steel you somehow have to cool down those sparks that tend to explode. Maybe take a piece of dripping wet cloth and place it so that the sparks are flying into it and the water cools them down.
Under the microscope the particles ground away from the mild steel should appear more rounded with deformed edges whereas the particles from high carbon steel should look much chunkier with sharp edges and little deformation. Also the high carbon steel particles should be significantly smaller.
Definitely an underrated video here!!
Thanks, it's nice to hear that. I was disappointed at how poorly the algorithm ranked it. Cheers.
Hey man, this has got to stop. I did learn something from your bullet skipping video. Then acted like a smart ass while drinking with buddies. Now you show more interesting info. I bet I won't be able to shut up in front of others again. If I continue to learn more like this, I will be too smart in front of my buddies for my own good.
It was an interesting video though.
Thanks for the vid. Fascinating stuff. I rarely comment but you deserve it.
Go back to Organic Chemistry. It has much to with the number of electrons available to be taken or shed. For each electron, there must be a certain level of energy to strip it from carbon or add it to the carbon. There is a bit of a chain reaction of steps in the conversion process.
I will even venture to say that it does not take much energy to break off chunks of cast iron, hence low sparking. It takes LOTS of energy to take even a little bit of high carbon steel chunks away from the rest of the sample. That energy is in heat, and a that heat (energy) will hang onto the little metal chunks longer, as the chain reaction continues as the chunk is flying through the air.
The purpose of language is to transfer ideas and information inside one humans head into anothers. So spelling differences and bad grammar, at the end of the day do not really matter as long as the correct information and ideas are transferred. Who cares if it is Aluminium/Aluminum, colour/color, aeroplane/airplane or grey/gray, they are close enough for people with any sense to guess.
Magnesium sparks. I've dragged it across concrete like chalk and it got mad lol
HOW FUCKING COOL IS THIS?
Awesome man
You are correct sir! Same reason why charcoal burns hotter than wood. Carbon rules!😎✌
Non-ferous no touch grinder!!! Hot water burn baby!!!
I heard somebody make a good case for calling Al alumium.
knew this already.. but great great video like always
That is very cool....well, you asked!
Aluminum was the original name but it was latterly changed to be in line with other elements. The craziest thing is that Webster changed so much to make English simpler e.g. removing the letter U from words such as colour, favour, harbour etc. so surely standardising would have made sense although in this case they're names not words.
BTW it's not leadum but I'm sure you know that really, you plumbum! lol
would it not be the intense heat reacting with the impurities and rapid heat exchange
THERMAL EXPANSION CAUSING BRITTLE METALS TO EXPAND FASTER THAN THEY CAN DEFORM LEADING TO AN EXPLOSION? So it would be like putting a blow torch on a piece of glass how if you heat it up slow enough it melts but if you hit it with too much heat too fast it just shatters.
Well that is my guess... I think it has something to do with a combination of the brittleness of the metals, the speed that the heat spreads through the metal and thermal expansion coefficient. So with the mild steel as the heat spreads through the little chips it is ductile enough to deform while the high carbon steel gets hot enough fast enough and is brittle enough causing the hot parts to expand and flake off/apart. The fact that Titanium also has this branching pattern backs this up but the more metals you can test the better of a result we can find. you should buy small pieces of metals and list the info about the brittleness, the thermal expansion coefficient and how fast the heat spreads through the metals and see if we can nail down some parameters. We also need some sort of way to classify this so we would need to maybe count the total number of sparks and the percent of them that "branch" so maybe like counts on every 100 images or something like that? but the area on the grind stone needs to be constant and hopefully you can create a device to apply constant pressure to eliminate as many variables as possible. Those are beautiful shots with some unknown underlying science! My favorite kind of youtube videos, and hopefully someone smarter than me can read my comment and make sense of it.
I JUST had a discussion with my wife about spark testing. Pretty sure we were watching some show and they had the exact WRONG sparks you'd expect. Maybe they were grinding Titanium and getting orange sparks. Can't remember. I was yelling at the TV.
It is more than simple chemistry. Annealed high-carbon steel does not spark near as much as hardened (quenched in water) high carbon steel. Blacksmiths know this when they make fire starting steels.
That also makes the spark test less definitive
Awesome, again!
For the higher-carbon steel, I posited at the start that it was the carbon reacting with oxygen. I can't see what else it can be.
Also, it's called NICKELODIUM :-)
In Germay we have Strohdummium.
from an Irish man I hear the USA says Al correct
Carbon oxidizing and combusting
@smartereveryday make a video about it!
Alsome video, thanks
Wow! Very beutiful!
I really wanted to give you a thumbs down.
@@jeffallen3382 because he dared us but sadly i could not give it a thumbs down
thx for great info
Very cool. 👍👍👍
awesome
O2 brah
I don't know how it applies to grinding, because I know essentially nothing about chemistry, but the sparks thrown by very hot blacksmithing of high carbon content iron seem to closely resemble these sparks. I believe I've heard blacksmiths call it "the carbon being driven out" as well. In fact, I think I can remember seeing iron heated to welding temperatures spontaneously sparking as it comes out of the forge. As a layperson in this subject, that seems to lend credence to the co2 gas explosion idea.
I am thinking that with the presence of carbon making the molecules spread out the iron molecules. There for the outside will cool faster in the air. With the outside being cooler then the inside it builds pressure and explodes like popcorn. Just my thoughts. Awesome video man.
That was amazing! Great production and information! Well done sir!
As a metal fabricator, I have seen/know this but this is very good info for anyone who doesn't know this has many uses and can save you in a pinch no thumbs down from me it's good knowledge for the people who don't know
Does the titanium contain carbon?
I don't think so. The titanium is a different process, and much more likely to happen obviously since almost every spark does it.
The explosion effect also happens with the titanium. And the heat of solution/dissolution is really quite negligible compared to everything else going on. So I think the carbon thing is a red herring.
This phenomena appears to correlate with the material hardness. So my theory is that it has to do with a sharp implosion of a hard skin of solid metal which first forms on the outside of the molten blob and is then put under increasing stress as more metal solidifies and shrinks inside this shell. I think a situation like in a Prince Rupert's drop develops, but which fails to remain intact, probably due to irregularities. Then the energy of the implosion disperses tiny droplets of fresh un-oxidized metal into the air where it promptly burns and creates the crows' feet effect.
There is a Japanese firework called "Senko hanabi." It's a completely different process and no iron involved but creates the same branching pattern. The only common factor is carbon. So, I'm guessing that as you said when the heated atomic carbon oxidizes it fractures the structure of the spark. Side note: This shouldn't happen when you grind graphite because the carbon is in a highly stable state.
My theory is that as the hot metal leaves the wheel, it undergoes rapid cooling to the point where a thermal shock is induced and the near molten metal explodes. The carbon plays a role in this by raising the freezing/melting point of the metal and making the shock easier to achieve.
why do some of the sparks in slow mo oscillate in color from red to blues and even possibly greens? is it just reflecting light? different tempering levels? different oxidation states?
I totally felt like I was watching smarter every day! Good and interesting video, thanks.
Excellent video, this is what RUclips was supposed to be
Do you have a Bitchute account? largest YT alternative
I mean i tell yah, you have done what no one ever have done. you were amazing truly. wish the best luck. hope you are in a good health.
Rapid, uneven heating and cooling through different elements in the alloy that have different thermal expansion and contraction properties.
titanium sparks looks really cool way different than anything else, good video cheers
Magnesium most definitely sparks, like a lot
hot metal hitting water vapor-minature steam explosions?
I wonder if the deflections off the tool rest are changing the spark appearance
Awesome episode !!!!!!!!! Also thanks for the knowledge
Good on you for being inquisitive and sharing.
Thank you for making this video it was so cool to see!
like the shirt like the porn i mean slow motion shots.
I would think it’s got a high magnesium continent.
this video blew my mind! awesome!
You always make the coolest vids! 💘
That's way cool---
*This is one of the best videos I've seen on YT in a long time. I especially liked the sound effects added to the slo-mo. Like you, I've always wondered about the exploding "fireworks" effect, and I came to the same conclusion that you did... it's probably caused by tiny bits of rapidly expanding gas within the particles. I never noticed that it doesn't happen with low carbon steel, so I hadn't come to the CO2 explanation that you did, but I suspect you're right. I don't think you mentioned that the titanium sparks are always white, compared to the orange sparks from iron or steel. Metallurgy is like witchcraft to me...*
Almost 20 years ago, I actually had a side business on eBay selling "Dragon Blocks," which were hunks of titanium securely bolted to a heavy duty piece of angle iron. That was after I found out that certain people have a peculiar fascination with bolting chunks of titanium under the frames of their cars, which were also equipped with lift systems. What they would do, is get going really fast (at night) and then drop the car until the titanium contacted the pavement and started throwing sparks everywhere. One of my customers sent me a video, and it was truly a sight to see. He must have gone at least 200 feet. Of course, they were all doing it on their own private roads.
I can attest to the fact that titanium is a bitch to work with, after many broken drill bits and taps. Cobalt drills and slow speeds worked best.
Scintillating. Illuminating.