26 replies to this topic

[johnptc]

Golden_eagle said:

Why not make your own? all an induction heater dose is run High voltage thru a copper pipe. High voltage power supplys DIY
Sorry if i blow your minds out the door, but mine needs some company.

I'll post some pictures once i finish mine

PS: Old computers have Almost everything besides the truck ignition coil, i can get the schematics for the one i'm working on.
To quote so many blacksmiths "we're blacksmiths, it should take us less time to make it than to talk about how to!"

high current not voltage :(

[CBrann]

Excellent ideas... blacksmiths in th e21st century?? the toolmakers back on the edge of technology again!!

Can someone give the short version on how induction works?? Have read some.. but having trouble cutting through techno-jargon..

[johnptc]

CBrann said:

Excellent ideas... blacksmiths in th e21st century?? the toolmakers back on the edge of technology again!!

Can someone give the short version on how induction works?? Have read some.. but having trouble cutting through techno-jargon..

high current in the heating coil creates a very strong magnetic field

this field in turn produces high electrical current in the piece to be heated...like a reverse electric magnet.

the hi current flow in the work piece heats it up just like running current thru an electric heater.

[Cross Pein]

johnptc said:

high current in the heating coil creates a very strong magnetic field

this field in turn produces high electrical current in the piece to be heated...like a reverse electric magnet.

the hi current flow in the work piece heats it up just like running current thru an electric heater.

I'm curious now, I figured that it was some kind of field, and obviously running a high current in loops will create a magnetic field. But how does this boil water or melt copper or have an effect on other non-ferrous material?

[CBrann]

Basically a high amperage electromagnet induces an equal magnetic field and current, and from the items resistance it gets hot? Thats so cooolll!!!

Cross Pein, from some of the things I have read you can magnetize anything if you have a strong enough field, the pic i saw they had a frog suspended in th ecenter hole of a huge e-magnet

[steve sells]

FYI this is why its not a good idea to have large extension cords coiled up while in use, not so bad for a work light, but high current here can burn the cord, which in turn burns the shop. As has done in the past to too many unwary people.

[johnptc]

Cross Pein said:

I'm curious now, I figured that it was some kind of field, and obviously running a high current in loops will create a magnetic field. But how does this boil water or melt copper or have an effect on other non-ferrous material?

the high magnetic field induces and electric current in a metallic object whether ferrous or not. it is really an AC magnetic field and it switches back and forth in polarity
it wont work with DC except for one initial pulse