Discussion:
"Burping" induction furnaces
(too old to reply)
Peter Fairbrother
2017-01-04 16:57:46 UTC
Permalink
Does anyone know how this is done?

eg:
8:34 at

4:06 at


the metal has melted, and they mix it somehow by pressing a button.


thanks,

-- Peter Fairbrother
Andrew Mawson
2017-01-04 17:24:42 UTC
Permalink
Post by Peter Fairbrother
Does anyone know how this is done?
8:34 at http://youtu.be/4ScLXI5s6HM
4:06 at http://youtu.be/iTx6d-wb6j4
the metal has melted, and they mix it somehow by pressing a button.
thanks,
-- Peter Fairbrother
An induction furnace can (does!) induce a strong circulating current in the
melt and this can make the melt swirl - I assume the button is altering the
induction driver to maximise this effect.

You want an Induction Furnace? I have one that I haven't re-commissioned
since moving here a few years ago - I'm sure we can negotiate a deal :)


Andrew
Mark Rand
2017-01-04 20:56:32 UTC
Permalink
On Wed, 4 Jan 2017 17:24:42 -0000, "Andrew Mawson"
Post by Andrew Mawson
You want an Induction Furnace? I have one that I haven't re-commissioned
since moving here a few years ago - I'm sure we can negotiate a deal :)
Andrew
I thought that the whole purpose of moving to somewhere that you could use
jump leads on the overhead power lines was to run the furnace without having
to use the generator!


Mark Rand
--
RTFM
Andrew Mawson
2017-01-04 22:02:33 UTC
Permalink
Post by Mark Rand
On Wed, 4 Jan 2017 17:24:42 -0000, "Andrew Mawson"
Post by Andrew Mawson
You want an Induction Furnace? I have one that I haven't re-commissioned
since moving here a few years ago - I'm sure we can negotiate a deal :)
Andrew
I thought that the whole purpose of moving to somewhere that you could use
jump leads on the overhead power lines was to run the furnace without having
to use the generator!
Mark Rand
Mark, I did have a 160 amp per phase three phase 415v supply run in
specifically for the furnace but other projects keep popping up and stopping
me. I even had a fire proof building put up for it, then it got filled with
other stuff ! Hopefully it'll get to the top of the list before they put me
in a nursing home!

Andrew
David Billington
2017-01-04 22:17:06 UTC
Permalink
Post by Andrew Mawson
Post by Mark Rand
On Wed, 4 Jan 2017 17:24:42 -0000, "Andrew Mawson"
Post by Andrew Mawson
You want an Induction Furnace? I have one that I haven't
re-commissioned
since moving here a few years ago - I'm sure we can negotiate a deal :)
Andrew
I thought that the whole purpose of moving to somewhere that you could use
jump leads on the overhead power lines was to run the furnace without having
to use the generator!
Mark Rand
Mark, I did have a 160 amp per phase three phase 415v supply run in
specifically for the furnace but other projects keep popping up and
stopping me. I even had a fire proof building put up for it, then it
got filled with other stuff ! Hopefully it'll get to the top of the
list before they put me in a nursing home!
Andrew
Sounds like a big piece of kit, maybe like one put in near me many years
ago where the company had to have a new big electric feed put in for the
induction furnace. I've only seen a couple of other induction
heaters/melters, one was in Norfolk and the guy used it for silver
soldering some medical gas regulator parts and IIRC old enough to use
valves but still worked well for the job but a big beast. The other was
in the QC lab at Hoesch steel in Dortmund Germany and was used to melt
and cast samples for optical emission analysis of the steel, no idea of
the internals but it cast a piece you could hold in your hand and was
about the size of a standard 3 drawer filing cabinet.
Andrew Mawson
2017-01-05 10:17:14 UTC
Permalink
Post by David Billington
Post by Andrew Mawson
Post by Mark Rand
On Wed, 4 Jan 2017 17:24:42 -0000, "Andrew Mawson"
Post by Andrew Mawson
You want an Induction Furnace? I have one that I haven't
re-commissioned
since moving here a few years ago - I'm sure we can negotiate a deal :)
Andrew
I thought that the whole purpose of moving to somewhere that you could use
jump leads on the overhead power lines was to run the furnace without having
to use the generator!
Mark Rand
Mark, I did have a 160 amp per phase three phase 415v supply run in
specifically for the furnace but other projects keep popping up and
stopping me. I even had a fire proof building put up for it, then it got
filled with other stuff ! Hopefully it'll get to the top of the list
before they put me in a nursing home!
Andrew
Sounds like a big piece of kit, maybe like one put in near me many years
ago where the company had to have a new big electric feed put in for the
induction furnace. I've only seen a couple of other induction
heaters/melters, one was in Norfolk and the guy used it for silver
soldering some medical gas regulator parts and IIRC old enough to use
valves but still worked well for the job but a big beast. The other was in
the QC lab at Hoesch steel in Dortmund Germany and was used to melt and
cast samples for optical emission analysis of the steel, no idea of the
internals but it cast a piece you could hold in your hand and was about the
size of a standard 3 drawer filing cabinet.
It's 100 kW and all semiconductor :)

Comes with two 'furnace bodies' that look like concrete mixers. One is a
conventional tilt for for pouring into a ladle or direct to the mould, the
other is an 'invert' type where the mould is clamped to the top of the
furnace body and the whole thing inverts dumping the charge into the mould.

Andrew

Andrew

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