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Refractory cement over elements
Hi there,
Looking for some advice with regards to an electric heat treat oven. I am currently rebuilding an tubular electric heat treat oven. The original one had an inner ceramic tube (8mm) with the element wrapped around it and then a couple of wraps of kale wool. What I am using is ceramic fibre board as my insulation material with thermal conductivity of 0.15W/mK. When I took the old furnace apart the old ceramic tube came out in pieces, so what I would like to know is, instead of getting another ceramic tube made and after putting the element into grooves made into the fibre board, can I cover the element with refractory cement with a thermal conductivity of 1.2W/mK? So I basically want to make a integral inner tube. The reason I am asking is after reading the Kanthal Handbook talking about furnace wall load, I am worried that after covering them with mortar, the element may overheat during usage. Any advice will be greatly appreciated! __________________ Duane Salzwedel https://www.facebook.com/Salzwedel-K...6180547389862/ Instagram: salzwedel_knives South Africa |
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a, advice, ca, ceramic, furnace, heat, heat treat, integral, made, make, material, question, repair |
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