heat treating kiln

I have an Evenheat with the basic set pro digital control, scrolling takes a little getting used to, but it does everything you need it to do, soak time, ramp up and down in temp. as well as the rate of ramp, (by that I mean you can set, say 300 degrees per hr if you want, or what ever rate you choose). I would get at least the 18 inch model, I got the 13.5 inch and there are times that it is to small. You can see the opperators manual online at their site I think it is Evenheat kiln.com may help to see how the cotrl is set. I hope this helps.
 
bladsmth said:
....I have owned several burnout ovens (jewelers ovens) without controllers, the ones with the controllers beat them hands down. I wouldn't trade my one Paragon HT oven for two uncontrolled ovens. Stacy
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Stacy and Friends,

What would it take to convert a burnout oven to a heat treat oven? What type of pyrometer and PID controller setup would be required? What's the interface between them and the oven?

Thanks, Phil
 
Marekz, I recommend to go with the Evenheat, and spend a few more dollars and get the digital computerized control. It makes life so much more simple, and the extra cost is not that much when your already spending some serious bucks. Go first class. You will not regret it.
 
I personally went with the 27" Evenheat Model. I figured 3600 Watts, might as well get the highest one they carry that uses the same amount of energy per hour, etc etc. If your house already had a dryer plug built in that isn't being used, evenheat will even put a male dryer plug on that just goes directly into the wall for the 30AMP models. The 15AMP models require a NEMA 6-20 Receptacle. Weights about 120 lbs. Get the set pro. The scrolling to temperature is easy. Just takes a few seconds to set it in. Once you find your sweet spot, it's not like you'll be changing the segments around anyways! :)

You will need to get another oven (toaster perhaps?) to tempering though. The kiln will not cool down fast enough to use it for tempering and even if it did to say 300 and you tried to set it to 400 for tempering, the oven would exceed the 400 degree tempering temperature because of the firebricks still retaining heat. It drops from 1800 to 900 degrees in about less than a minute, but then it takes a bit of time, to drop back down to room temperature good enough to do any real tempering. With these steels that you need to temper immediately as they hit 120-150 degrees (A2, etc) there wouldn't be enough time to cool the kiln fast enough. Not to mention it's not good to excessively cool firebrick too fast as it can crack. soft stuff!
 
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