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Fundacion
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Join Date: Apr 2012
Posts: 50

Design of 260° Oven, 600 Liters. Best Isolation Method?

03/31/2014 10:24 AM

Hi Guys, I need to make an oven for curing purposes, max temperature will be 260°C and curing time at this temperature will be 10 minutes. Will be heated with electrical resistances and controlled by a PID controler. As it is just for testing purposes, I want to make it with thin metal sheet. I want to fill the walls with some isolator material, but I am not sure the better. I have in my shop rigid polyurethane foam (130 Kg/m3), but I am not sure if it will survive the temperature.

Please any suggestion about the isolation material, will be fine!
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phoenix911
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#1

Re: Design of 260° oven, 600 liters. Best isolation method?

03/31/2014 10:28 AM

isolation or insulation?

From your context, I's say it was insulation.

I would suggest 8 lb. Mineral wool would do the trick. (do not know what your side wall space is for the insulation.)

I have design industrial pizza ovens (Crusts), and working temperatures were 250° - 375° C which worked great.

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Fundacion
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#2
In reply to #1

Re: Design of 260° oven, 600 liters. Best isolation method?

03/31/2014 10:31 AM

Insulation!, I am very sorry my mistake!
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JohnDG
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#3
In reply to #2

Re: Design of 260° oven, 600 liters. Best isolation method?

03/31/2014 11:06 AM

For additional clarity, you'ld be better to use the term "thermal insulation".

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Nigh
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#4

Re: Design of 260° oven, 600 liters. Best isolation method?

03/31/2014 12:03 PM

We use mineral wool for ovens that heat our vacuum chambers to 380° for several days. Obviously any exposed parts of the metal frame will transmit heat. For one of our ovens we bought custom made insulating blankets which zip together around the oven.

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Tornado
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#5

Re: Design of 260° Oven, 600 Liters. Best Isolation Method?

03/31/2014 2:09 PM

Plain fiberglass batts (no paper or vapor barrier) could also work.

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Wal
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#6

Re: Design of 260° Oven, 600 Liters. Best Isolation Method?

04/01/2014 12:48 AM

Fill the voids with rice husks.

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