This is an awesome project. Just be careful if you decide to heat up any galvanized nuts/bolts/parts. Metal poisoning is not fun and it only takes a very tiny whiff.
So, if you wanted to do an elaborate prank, you could build a circuilar room in which the walls are an induction heater coil (hidden with ceramics), then you put an arrangement of metal objects and a person inside. Pump like, 10 megawatts through the coils and watch their looks of shock as the metal starts melting before their eyes, seemingly from no heat source.
Hi! Can you add also the electronic schematic? I want to try your version too. What frequency do you use? At 12kW and 560V, you get around 20 amps, medium current. This is not such a high current and the switching devices to deal with this current are not so expensive, but the problem is that they have to resist to more than 1000V in reverse, and this probably gets them expensive. But, also, they have to deal with the pulse current, which is, probably at least 3 times higher, probably 60 amps. Do you use an impedance adapter between the inductor and the output of the inverter? Depending on the frequency, the impedance of the inductor, probably in parallel with a capacitor goes to a few ohms, maybe under 1 ohm. This leads to an enormous current at a very low voltage. If you look through my videos, you'll be able to see that I have also tried to do an induction heating equipment, but mine had around 300W cunsumption. The medium current was around 1A at 300V DC (220V AC rectified and filtered with a few hundreds microFarads capacitor). The pulse current was higher than 5 Amps. I used the same model of inductor, made out of copper pipe in parallel with a capacitor, an LC parallel and an RC series between the inductor and the half bridge MOSFET transistors, to adapt the impedance. Thank you in advance, Bogdan
Good friend night! How much do you charge to do a heat induction system with the following parameters Heat to melt quickly iron inducer which can reach 4000 degrees celcius, small compact is possible to mount the system on the size of a computer tower or less .for Please answer me Input 12v -220v
Verry nice I also tried that type of ind. heater but it didnt work very vell, i got some coupling issue, maybe I miss something about it, I would like to buy your circuit plan if you say ok ???
Kizmox Ohhhh! so everything that a magnet can magnetize, will only be able to be inducted. So If you put some woods between it. It wouldn't heat? unless it has a metal or a magnet attached in it.
Hallo sir, I watched several of your videos and some of them are very interesting, especially those about induction heating. I build a small device myself which is capable of delivering 600W. But I want to reach the next level and manage to build a 2kW induction heater. I have no problem according to the power electronics or how to ensure resonant frequency. But I don´t know how high the voltage across the working coil can be before reaching an unsafe level. I mean if the inverter runs at a frequency of about 100kHz and there is a galvanic separation between the work coil and the supplying net would it be safe touching the coil if there is a voltage of about 125V? Or can this voltage be far higher at about 600V before it will be deadly to touch? Greetings from Germany Dirk
Good question. In my heater there is about 1000V over the work coil when it runs at full power. Im not too concerned about that, in my case its about 40kHz AC and pretty much only thing it can do is burns. 50/60Hz is much more dangerous at same voltage levels because your heart tries to synchronize to this signal. I think best safety feature for larger induction heater is to have galvanic isolation between mains power and work coil. In my case I have 50Hz isolation transformer between wall outlet and inverter and 8:1 coupling transformer between inverter and tank circuit.
Thanks for this information. I thought the same but I was absolutely not sure. I know the limits for DC and 50 Hz AC, but I knew no limits for frequencies within the range of some kHz. What topology are you using? Series resonant tank or some sort of LCLR Network?
Good evening, I'm interested in the subject and I would like to know if I could teach me how to build an induction oven like yours, since I need it to be described as prollected. regards
LETS SEE SOME TUNGSTEN MELTING! That would be great! Find a worn out tungsten drill bit from a machine shop, 3422 Celsius would be impressive for a video for sure... Not that this wasn't cool...
Hopefully someone will answer this question. Could you just make a coil and energize it with a welder and get this to work. I don't know much about high voltage electrics but would it be easier or even possible to do it.
can you use a steel tank to melt aluminum copper and brass? I want to make a foundry for removing steel contaminating aluminum and copper or brass as well. Many of the brass items I get are so tiny, like screws, would like to pour them as bricks instead. I have 2 steel tanks large enough to hold the cylinder section of a lawn mower engine. Was going to use drain oil but this may be easier.
An induction heater will heat any conductor, e.g. metal, by generating a high current in the metal. If the metal is ferromagnetic (iron, steel) you get an additional heating effect from switching the magnetic domains back and forth, but that part of the heating only works up to the critical temperature.
Kizmox Well... actually is so well built that it could. You wrote it uses from 8Kw to 12Kw, but at which voltage? I would like to build one Induction heating unit to use in a little lead furnace. I only need to produce around 600.61 K (327.46 °C) at full load. Have you got any suggestion? Usefull links on the web to free projects/schemes? I've got good skills in soldering, and basic electronics, but i'm not so confident with hi power one. I read lots of infos about cooling the coils etc, but i definitely need more info to build my rig.
Brass works but not as good as steel. Using 20v power brick at 12A I could heat up metal pieces glowing red but using a 223 brass case I don't think it reached annealing point. What I need is more powerful and higher voltage power supply.
Coil has to carry about 1000Amps at 40kHz. It is made from copper tubing and has cooling liquid running through it. At these power levels the coil would overheat and fail in less than 20seconds without cooling.
+last king This heater is transformer coupled series resonant one so touching the work coil is safe and unsafe at same time. Its safe because the tank circuit is electrically floating, so touching ground and work coil does nothing. But series resonant operation does generate high voltage, in this case there is about 700Vrms @ 40kHz across the tank capacitor and work coil. Current is around 1000Arms @ 40kHz. AC at 40kHz is not deadly, it will not cause heart issues like 50/60 mains will but it will give rather nasty RF burns that can easily be 3rd degree.
+last king Actually this thing does run on 3x400VAC mains. I live in 3 phase part of the world :) And you will get nasty burn if you touch both ends of the work coil at the same time. Same goes with resonant capacitor.
+last king This thing rectifies 2x400VAC to 565VDC and then uses half bridge inverter to turn it to 40kHz square wave that drives the matching transformer. And I think ZVS is not very good idea at these power levels. Suitable switching transistors alone will be very expensive and large parallel connected stack.
+last king This project is not something i can recommend to someone who needs schematics. If you are into electronic engineering, you should be able to figure out everything from comments i have posted here over the years. This is big, expensive (all parts new -> well over 1000€) and dangerous build.
😱 el agua es para enfriar el interior de la bobina.
Vamos muchachos a trabajar.😉
This is an awesome project. Just be careful if you decide to heat up any galvanized nuts/bolts/parts. Metal poisoning is not fun and it only takes a very tiny whiff.
so cool , but yet so hot. i would love to build this device
So, if you wanted to do an elaborate prank, you could build a circuilar room in which the walls are an induction heater coil (hidden with ceramics), then you put an arrangement of metal objects and a person inside. Pump like, 10 megawatts through the coils and watch their looks of shock as the metal starts melting before their eyes, seemingly from no heat source.
Hi!
Can you add also the electronic schematic? I want to try your version too. What frequency do you use? At 12kW and 560V, you get around 20 amps, medium current. This is not such a high current and the switching devices to deal with this current are not so expensive, but the problem is that they have to resist to more than 1000V in reverse, and this probably gets them expensive. But, also, they have to deal with the pulse current, which is, probably at least 3 times higher, probably 60 amps. Do you use an impedance adapter between the inductor and the output of the inverter? Depending on the frequency, the impedance of the inductor, probably in parallel with a capacitor goes to a few ohms, maybe under 1 ohm. This leads to an enormous current at a very low voltage. If you look through my videos, you'll be able to see that I have also tried to do an induction heating equipment, but mine had around 300W cunsumption. The medium current was around 1A at 300V DC (220V AC rectified and filtered with a few hundreds microFarads capacitor). The pulse current was higher than 5 Amps. I used the same model of inductor, made out of copper pipe in parallel with a capacitor, an LC parallel and an RC series between the inductor and the half bridge MOSFET transistors, to adapt the impedance.
Thank you in advance,
Bogdan
agreed, for blows, surprised they did not melt in a ford
Good friend night!
How much do you charge to do a heat induction system with the following parameters
Heat to melt quickly iron
inducer which can reach 4000 degrees celcius, small compact is possible to mount the system on the size of a computer tower or less .for Please answer me
Input 12v -220v
Verry nice
I also tried that type of ind. heater but it didnt work very vell, i got
some coupling issue, maybe I miss something about it, I would like to
buy your circuit plan if you say ok ???
Can I get a copy of plans to build one?
Regards
Benny
sry i was little bit late but you have been added now :)
Could you go large scale heating
Hy! This machine it's homemade?
m8 where you get that crucible from? =]
ok big like power in you're arme
can i see the plan or schéma électrique
why are there sparks flying? what could be the reason?
+Sharan V
Reason is simple, molten steel burns when it comes in touch with oxygen in air.
Kizmox
so my understanding is that this burning causes mini explosion that causes tiny amount of molten steel to fly off creating this spark?
+Sharan V Yep something like that.
thank you for the insight .cheers XD
Can you please mail me circuit diagram.?
Can you put your fingers between the induction coil?
Sure, magnetic fields wont hurt :)
Kizmox Ohhhh! so everything that a magnet can magnetize, will only be able to be inducted. So If you put some woods between it. It wouldn't heat? unless it has a metal or a magnet attached in it.
Kizmox Just Subscribed and liked your video. :)
PaneMaxPain Magnetic metals like iron or steel will heat easily. But all metals are more or less induction heatable. Wood or plastics wont heat.
Thanks for the explanation. Thumbed up.
nice
COOL...=)
is it ZVS based ?
Tejeshw Vardhan no
that isn't true at all...
The power is OVER 9000!!! (Watts hahahahah)
ok big like power in you're arme
nice
Can You melt glass like this? I am a glass blower and want to find new ways to melt glass in my furnace.
Hallo sir,
I watched several of your videos and some of them are very interesting, especially those about induction heating. I build a small device myself which is capable of delivering 600W. But I want to reach the next level and manage to build a 2kW induction heater. I have no problem according to the power electronics or how to ensure resonant frequency. But I don´t know how high the voltage across the working coil can be before reaching an unsafe level. I mean if the inverter runs at a frequency of about 100kHz and there is a galvanic separation between the work coil and the supplying net would it be safe touching the coil if there is a voltage of about 125V? Or can this voltage be far higher at about 600V before it will be deadly to touch?
Greetings from Germany
Dirk
Good question. In my heater there is about 1000V over the work coil when it runs at full power. Im not too concerned about that, in my case its about 40kHz AC and pretty much only thing it can do is burns. 50/60Hz is much more dangerous at same voltage levels because your heart tries to synchronize to this signal. I think best safety feature for larger induction heater is to have galvanic isolation between mains power and work coil. In my case I have 50Hz isolation transformer between wall outlet and inverter and 8:1 coupling transformer between inverter and tank circuit.
Thanks for this information. I thought the same but I was absolutely not sure. I know the limits for DC and 50 Hz AC, but I knew no limits for frequencies within the range of some kHz.
What topology are you using? Series resonant tank or some sort of LCLR Network?
0Kahless0
This is transformer coupled series resonant tank.
Good evening, I'm interested in the subject and I would like to know if I could teach me how to build an induction oven like yours, since I need it to be described as prollected. regards
What happens if the steel touches the coil? Will there be a short circuit?
LETS SEE SOME TUNGSTEN MELTING! That would be great! Find a worn out tungsten drill bit from a machine shop, 3422 Celsius would be impressive for a video for sure... Not that this wasn't cool...
You can get a power supply from www.inductaflex.com they do different sizes from 5kW up to 2000kW
Please give me exactly what type of this machine I want to buy it. thank,s
Going to build an induction forge?
BTW you should build those things for a living.
Hello . I would love to have the plans on how to make one of these. I have a blacksmith friend who wants to try this when forging
DEAR SIR CAN YOU SEND ME THE SCHEMATIC DIAGRAM AND PARTS LIST ABOUT THIS VIDEO. PLEASE....?
Kizmox where do I get the power supply to do this?
is that a big capacitor ? the pink think
Hopefully someone will answer this question. Could you just make a coil and energize it with a welder and get this to work. I don't know much about high voltage electrics but would it be easier or even possible to do it.
+Quarlow 12 Sadly no. In theory inverter welder could be used with special control circuitry but it wont be easy.
Can you do an tutorial?
can you use a steel tank to melt aluminum copper and brass? I want to make a foundry for removing steel contaminating aluminum and copper or brass as well. Many of the brass items I get are so tiny, like screws, would like to pour them as bricks instead. I have 2 steel tanks large enough to hold the cylinder section of a lawn mower engine. Was going to use drain oil but this may be easier.
Syncs to the heartbeat? Do you have any reference to that?
how much power it consume from AC socket @ 220v? o.O
faZ UM cadinho de carvaob
amigo podrias mostrar como fabricarlo paso a paso ,seria interesante poder aplicarlo como calefaccion de una casa
I like this project. Can u give me a circuit diagram
What's its power level?
OVER 9 KW!!
i recognize those vice grips, they where used in the watermelon explosion and some other capacitor videos, any why choose a connecting rod? haha
dear friend which is the working frequency
IS POSSIBLE FOR YOU SEND ME THE SCHEMATIC
can you send me a schematic diagram...?
wat is the capacity of the resonanz cap on the output coil ?
10uF
ah ok thanks ;) lg
Melting metal with a magnet! Crazy!!
Is the copper coil hot to the touch? could this be built to heat water, thanks!
Copper coil stays cold. Induction heater can be used to heat metals only.
What is the oscillator and the gdt ic?
can you give me your circuit . i need it
I'm still trying to figure out how this gets steel past it's critical temperature
An induction heater will heat any conductor, e.g. metal, by generating a high current in the metal. If the metal is ferromagnetic (iron, steel) you get an additional heating effect from switching the magnetic domains back and forth, but that part of the heating only works up to the critical temperature.
are u using LCLR matching circuit in this setup?
can I use this for melting gold and silver?
yes, but it is far to powerful
for most use cases of smelting gold/silver at least
can you share the schematics with us?
just buy one on ebay...
no, I would like to build one
Best use for FORD parts..
Impressive!
Teach me your ways Elder Kizmox.
im going to call this, Kizmoxing
Is this an induction heater you built by youself?
Does it look like commercial unit? :D
Kizmox Well... actually is so well built that it could.
You wrote it uses from 8Kw to 12Kw, but at which voltage?
I would like to build one Induction heating unit to use in a little lead furnace. I only need to produce around 600.61 K (327.46 °C) at full load. Have you got any suggestion?
Usefull links on the web to free projects/schemes?
I've got good skills in soldering, and basic electronics, but i'm not so confident with hi power one.
I read lots of infos about cooling the coils etc, but i definitely need more info to build my rig.
DanieleBecchetti 3x400V 3 Phase input, 560VDC to IGBT bridge.
Does it heat up Brass ???
All metals will work
But have you tried brass ? Let me know when you do I would be very interested in the results...Thanks Kizmox
Brass works but not as good as steel. Using 20v power brick at 12A I could heat up metal pieces glowing red but using a 223 brass case I don't think it reached annealing point. What I need is more powerful and higher voltage power supply.
Does the coil get hot apart from any radiant heat from the material it's heating
Coil has to carry about 1000Amps at 40kHz. It is made from copper tubing and has cooling liquid running through it. At these power levels the coil would overheat and fail in less than 20seconds without cooling.
+last king This heater is transformer coupled series resonant one so touching the work coil is safe and unsafe at same time. Its safe because the tank circuit is electrically floating, so touching ground and work coil does nothing. But series resonant operation does generate high voltage, in this case there is about 700Vrms @ 40kHz across the tank capacitor and work coil. Current is around 1000Arms @ 40kHz. AC at 40kHz is not deadly, it will not cause heart issues like 50/60 mains will but it will give rather nasty RF burns that can easily be 3rd degree.
+last king Actually this thing does run on 3x400VAC mains. I live in 3 phase part of the world :)
And you will get nasty burn if you touch both ends of the work coil at the same time. Same goes with resonant capacitor.
+last king This thing rectifies 2x400VAC to 565VDC and then uses half bridge inverter to turn it to 40kHz square wave that drives the matching transformer. And I think ZVS is not very good idea at these power levels. Suitable switching transistors alone will be very expensive and large parallel connected stack.
+last king This project is not something i can recommend to someone who needs schematics. If you are into electronic engineering, you should be able to figure out everything from comments i have posted here over the years. This is big, expensive (all parts new -> well over 1000€) and dangerous build.
WANT
Very very nice*
what is the frequency ?
Roughly 40kHz
thank. and the current in the coil? roughly is far enough.
600 to 1000A