DIY induction heater, steel melting

[cajoca8]

i need one for hot knifing lol

[Microwave89]

Very nice!

Please tell me, which frequency you're currently using!

[binolar]

I see an ass in the top right corner

[ConorC96]

How do you make one of these induction heaters.

[1234lavaking]

will you send me one?

[csgtfaught]

this would be bad ass for the shop.

[camden199]

does the coil get hot?

[parkour3719]

can i buy one of these?? if so, how much?

[djHB999]

If you would put your finger in the induction heater. What happens?

[braseldazzle]

@djHB999 it would melt off almost instantly

[foxenonx]

อยากรู้ว่าใช้วงจรอะไรครับ ผมจะเอาไปทำโปรเจ็คจบ มีข้อมูลให้บ้างมั้ยครับ

[monirul81]

i want to get such a heating system for personal use, will you supply me?

[Riceboy33351]

what if you put your finger in it does it still work or does it only work with metal

[MyPyromaniac123]

now keep it goin and u got a lightsaber

[darkgeneses]

Induction does NOT work off magnetic flux it works of RF friction thats why you can use it on copper alum and steel above the point of melting

[Mrsunrisezero]

HELLO

I AM INTERESTING TO MANUFACTURE IT.

PLEASE SENT ME THE SCHEMATIC AND ANY OTHER NEEDS INFORMATION ( SORRY FOR MY BAD ENGLISH)

E mail sunrisezero@yahoo.gr

THANK YOU SO MUCH

[hiddenig]

Hi I would like to make me one for heating small iron rods could be used by your machine scheme, is very good

Greetings and thanks

[TheKaos90]

I'd like to see someone stick his d**k in there

[trapingman]

omkr01 = stupidhead 

[mickycheese27]

If I put my cellphone and run it on low power, will it charge?

[tonskulus]

@mickycheese27

It will more likely explode..

[mickycheese27]

@tonskulus very LOW power and freq

[MrNeoFromMatrix]

@mickycheese27

lets test it ;)

[mickycheese27]

@MrNeoFromMatrix let me know when you are ready

[MrNeoFromMatrix]

@mickycheese27

now xD

take an old nokia and test it !

[mickycheese27]

@MrNeoFromMatrix

The charging sign came for a split second and then it started smoking!! lol now I have a pool of a molten metal and it looks like a cool alloy.

[MrNeoFromMatrix]

@mickycheese27 to much power !!

xD

[mickycheese27]

@MrNeoFromMatrix It was on the lowest setting possible

[MrNeoFromMatrix]

@mickycheese27

:/

shit -.-

what if you it with 3,6 v and 0,1 A ?

[MrJonagikster]

@mickycheese27 maybe if u put it in the right way

[mickycheese27]

@MrJonagikster I had to make a coil and attach it to the battery to get it charging

[MrJonagikster]

@mickycheese27 did it actually work?

[squeehunter]

What's a Lesbian Gay Bisexual Transgendered half-bridge inverter?

[Arthedes]

@squeehunter that would be you

[TheScientist0000000]

So does the coil produce EMI that drowns out WiFi signals for the entire neighborhood?

[stanley6602]

You build that by yourself? I'm very interesting to DIY one. Can you offer me any reference circuits? Thanks

[chucktata]

Good work! After over twenty five years of working around induction power supplies I've never seen one built using IGT's. Impressive!

[Mendelevium146]

question, if you put a finger in it how long till it dies? Would be nice to see it with a peace of meat. After all tissues are like 50% water

[tonskulus]

@Mendelevium146

Nothing happens. It only affects for metallic objects. Organic materials require much, much higher frequencies.. known as dielectric heating and micro wave heating.

[Mendelevium146]

@tonskulus mmm so this is a magnetic induction device? I see. I thought it was an electric induction thing like they use to heat non feromagnetic conductive materials. They require much higher frequencies though.

[tonskulus]

@Mendelevium146

hmm..? This induction heater easily heats and melts non-ferromagnetic metals also, like aluminium.

[Mendelevium146]

@tonskulus oh cool, then dont put your finger inside it, human body is very conductive. The magnetic induction I was talking about is what they use in stoves and stuff

[tonskulus]

@Mendelevium146

I does nothing for fingers or any other organic materials!! I can easily keep my finger inside of it and nothing happens.

[417musick7]

But But WHERE are your Gloves? Please Tell me you had EYE Protection on? That Molted Hot Iron Flying around all over your desk and floor and you stick your hand in to move the tray… GEEZ MAN What's Your Address FOR THE LOVE OF GOD!!! LET ME SEND YOU A FireFighter Suit.

[luthmhor]

I want to make/buy one of these, but I have no idea where to even begin to start, I've done a relatively simple circuits course last year (im in mechanical engineering) but im wondering how to get started. Ive looked online and found no guides or anything, im in the dark here.

[kanfagun]

hi i m interested can you figure up for me for that schematics and design for melting 25 kg steel and iron inside work coil 10" and height 15" in few minutes

[DDarcade]

Wow, cool induction heater! I was wondering if you had any plans and schematics on how to build an induction heater. I've looked everywhere, and can't seem to find any information. Looks like you built one pretty well! Could you tell me where you found your information? Or if you have plans and schematics I would love to buy them from you... Thanks

[azza44100]

That's not melting it's just getting very hot and sparking technicaly not melting

[tonskulus]

@azza44100

You are wrong. It did melt! Look at 0:43, you can see there molten steel drops down.

I have melted lots of steel and iron using my induction heater.

[Prozackityzac]

@azza44100 guy.....you can see it melting..

[marieomagpie]

I had this same idea, but had no idea how to keep it running

[riky22lou]

TONSKULUS, can you give us the detailed schematic of this device of yours, most of us here are newbie in electronics, man...

[anthonylovecraft]

how hot does steel have to be to melt?

[417musick7]

@anthonylovecraft Over 2700F ITS FRAKIN HOT! And no Protection!! This guy! He may be able to make the circuit and build it but He forgot to Protect himself from the Little Pieces of Molten Steel Flying All Over!!

All the Iron Fab. houses I've watched on History Mysteries, All wear Protection Suits and GLOVES!! OK Let's Buy this Kid some Protection!

[The2010SnowDay]

This may seem like a dumb question, but is the coil hot to the touch or not? I used to know but now I forgot

[dj7310]

touch it :)

[williamhad]

what did you use for the power supply?

[raydio27]

Induction works on the principle of magnetic flux. Since your fingers are not magnetic (take the trace amount of iron in your blood), nothing would happen. Only a magnetic substance placed inside would heat up.

[tonskulus]

@raydio27

Nope, work coil induces very strong eddy currents to the work piece. These eddy currents will heat it up and finally melts it.

[Serostern]

@raydio27 And that is how we melt copper in it!

Or, wait....

[Ilovelazers]

@raydio27 well since you blood has copper in it it MAY but proboly not

[Kukkaloota]

@Ilovelazers I dont think so. I've heard that there is no health hazards with induction heaters. I've tested one commercial version and no harm inflicted upon me.

I presume that if you keep your finger a long time in coil it MAY cause warming feeling but Im not certain. After all blood consists hemoglobin's iron and protein bound copper.

[630MillionGods]

what does the circuit do ?.. what kind of current is passing through the coil ?.. Is it halfwave AC 300 V ?.. or pulses ? how is the waveform ?

[hxasmirl]

dont put fingers into that thing

[KB3PGM]

Thanks for the schematic. It is always frustrating when people post DIY type stuff but have no explanation on HOW-to ..Thanks again

[panzarw]

its such a simple thing, why i didnt see it before ?

I knew this fact for 3 years but now only see it in action.

BTW just for the note, transformers use thin steel plates so that effect is minimized (current vortixes in metal)

[ordosingularis]

Great video. I'm curious, have you determined the heating efficiency?

[zzzlt]

put the fan behind it to blow work air or hot to heat up homes or

[uut0]

wut is the max temperature you can reach with induction?

[kynaniska83]

@uut0

I have reached 2896 K (2623 °C) with IH. I guess it is possible also with that heater.

[gschjetne]

I wonder if such a heater could melt a decent crucible of bronze. I'd love to get into metal casting.

[mrmedia1994]

Cool!

[walkingfreak]

damn i wish i was smarter at this shit i can't figure out the diagram and what not because im so stupid at it haha

[jamesbeattie11]

cud this blow your fusebox?

[tostrong4you]

ye, could it?

[Treblaine]

It says in the info section that this was set to 2 kilo watts. That's about equivalent to boiling a kettle and toasting some bread at the same time so no, this should not blow any fuses.

[dundermiflinpaper]

yea, to agree, some hairdryers are about 2 kilowatts

[kynaniska83]

I haven't see hairdryers reaching 2700 kelvins or vaporizing metals such as titanum...

[Treblaine]

Well for one this power supply is only 2kilo-watts, the induction heaters that can heat to 2700 kelvin use much more power than a hair dryer.

This induction heater takes almost 30 sec just to heat to incandescence = 500 degrees Celsius = 670 kelvin. I suspect the video doesn't even show the whole heating time.

Hair dryers are heating to max temperature instantly and have additional power draw from the powerful fan which dissipates the heat very quickly compared to focused induction heating.

[kynaniska83]

Melting steel reguires +1500C and it can be reached in a seconds due to high power density. You just cant compare direct and indirect heating in effiency or in max temperature.

[Treblaine]

Well I didn't compare the heating effect of a hair drier and induction heating (though you kinda did) I merely contrasted them, the emphasis being on the differences.

The point is, this video IS of a 2 kilowatt power supply and many hair driers DO also use 2 kilowatt of power.

The bottom line was to answer

jamesbeattie11's question about whether a house's fuse box could handle this.

[dundermiflinpaper]

well said

[chrintov]

curious...i have never heard of a 2000 watt hairdryer...

[flanksteak2]

Typical Hairdryers and plug-in heaters are 1500 watts.

[flanksteak2]

That is correct.

Most household circuits are 20 amps which equates to 2200 watts max or about 1800 constant.

[Treblaine]

yet my comment gets voted down...

[Treblaine]

@fatqwert200

That's a bit rich coming from a Gwen Stefani fan.

[Paragon36]

Tonskulus Thanks for the info! Could you direct me to the schematic please? The one that Lighting Stalker had trouble finding.

[tonskulus]

You should be able to make your own schema out of block diagram. Its not special stuff, standard halfbridge converter with trigger ic driver. There is no sense replicating my schema because you cannot do everything just like I did. U pick up components what you can find and make everything working together.

[Paragon36]

tonskukus.... Great Work I have to say! Sometime ago I was playing with LCLR based on Richie Burnett design and using a PLL to self tune the circuit. I had a degree of sucess but issues at the currie point. I am unable to find the scematic mentioned below would you please be kind enaough to forward. Once again good work!

[tonskulus]

Instead of PLL ic, im using current feedback from tank circuit to self oscillating schmitt trigger IC (74HC14, 100k pot beetween in/out to start oscillating effect, adjust this freq close to tank freq and its ready to run). After that there is discrete gate driver circuit and so on.

[TheLightningStalker]

Is there a scematic available for your circuit or the one which it is based on? Thank you.

[tonskulus]

yes there is.

[TheLightningStalker]

Okay, I found the schematic on your site. The link wasn't easy to find though. It's not in your YouTube channel. There's a flyback driver on my site that uses an SG3525. The link is in my Channel. Thank you.

[jovicakluk]

are you water cooling it???

[tonskulus]

currently, yes.

[liwaboy]

Steel often melts at around 1370 degrees C (2500°F). how could you touch the case 5 sec before it melt , is that reall steel ,

bye the way how much energy its used

[tonskulus]

Case is made out of stone, it is hot (heated by IR radiation from workpiece) but touchable. And yes, steel rod is being used as workpiece. Workcoil is always cool as there is waterflow through the coil.

[liwaboy]

yes , and how much energy (KW) does it need to do this

[tonskulus]

In this application, around 2kW of input power is used. Output power might be around 1.5kW or so..

[tTatmosT]

not 1370... over 1500ºC don't know exactly,

I only know that it melts at a higher temp then iron...

[salut151]

tonskulus, I would be interested to get the plans of your induction heating system (or maybe a kit). I want to melt gold, I'm tired of electric furnace :D

Thanks

[MOJTABASHOMAL]

can this induction heater heat a graphit rod?

[singful]

sweet

 how did you make it ???

[tonskulus]

IGBT halfbridge inverter and LCLR tank circuit. Resonant freq is around 70kHz.

[ewigkase1]

have any links to were you got these parts?

how much did it cost you?

[tonskulus]

1. No.

2. Copper tube: 20eur/5meters from car parts seller (it was copper fuel pipe), water pump: 10eur. Other parts were free for me.