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Heat treatment hearth
Main physics and chemistry index sign:Sic 62-65%(Ae2O3+Tio3)13%.Sio2.20%.Fe2O3 1-1.5%..Does the fire-proof degree be no lower than the 1650 os 2 kgs/ cm2 The load soften to start the temperature oC being no lower than 1250 oCs, show the pore rate to be no bigger than 30%.The normal temperature bear to press the strength kg/ cm2 to be no smaller than 350.Mainly used for the molding tool, the fire of 淬 of the metals, back the fire and laboratory usages.The temperature inside the stove can amount to the 1200 oCs or so.Alkaline 0.5-1% of material( K2O.Na2.CaO.MgO).
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