[TheForge] Induction Forge? How much power does it take to run it?

[Steve Kayne]

I did not read what I typed 50 amps should have been 60 amps.I will re read 
this ,sorry. The freq.is 30 to 100 khz.Just getting the photos of the demo I 
did has been frustrating me as I am not a patient person and in my 70th 
year like to have everything happen in my lifetime. The photos should be on 
our site and Anvilfire in a day or so.
-Steve kayne---- Original Message ----- 
From: "paul" <forge at wi.rr.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Wednesday, August 23, 2006 9:06 PM
Subject: Re: [TheForge] Induction Forge? How much power does it take to run 
it?


> Steve Kayne wrote:
>> The IF can draw 50amps. The problem with a generator is that it see's the 
>> IF as a resistive load. The IF senses variations in line voltage and 
>> freq.and will cut out. We spoke with Grant about this a few weeks ago, 
>> his response was negative.
>> -The unit is rated at 1500Kw and can put 600 amps into the work. It 
>> really is easy to put the work into the coil and not hit the coil and 
>> short it out. Putting two pieces into the coil butting them together at 
>> welding heat and doing a butt weld is trickier for me ,I cannot be 
>> chewing gum---- Steve kayne
>>
> I was curious about the power draw... 1500kw is 1,500,00 watts. at 240 
> volts and 50 amps we're looking at about 12 kw or 12,000 watts.
>
> Given the stated coil current of 600 amps, and that the 'matching' system 
> that connects the coil to the power supply is a step down transformer 
> which matches the impedance of the power supply to that of the coil,  even 
> at 12 kw an output current to the coil of 600 amps is reasonable.
> I was curious what the output frequency of the IH was. Some of the old 
> industrial IH systems were motor generators operating in the 400 cycle 
> range.
> The lower the frequency the deeper the heat is generated in the stock. 
> High frequency units primarily heat the surface as the induced currents do 
> not penetrate the surface very far.
>
> Paul Sperbeck
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  blacksmithblacksmith at hotmail.com
> password:  anvil
> ___________
>
>