The national standard density of ceramic fiber modules is 220Kg/m³, which is determined by the following two aspects.
1. Eins og við vitum öll, kemur góð hitaeinangrunarframmistaða keramiktrefja frá lítilli varmaleiðni. Hitaleiðni keramiktrefjaeiningarinnar minnkar með aukningu magnþéttleikans, en magn lækkunarinnar minnkar smám saman. Þegar þéttleiki fer yfir 300KG/M3 minnkar varmaleiðni ekki lengur og hefur tilhneigingu til að aukast.
2. However, the density limit of the ceramic fiber module is 240Kg/m³; this is because the ceramic fiber blanket is made of fiber cotton with a double-roll spinning process. The length of the fiber cotton is between 80-130 mm. Once it exceeds 240Kg/m³ At this limit density, the fibers will break a lot, and the breaking rate is as high as 48 percent , thus affecting the product performance.
In practical applications, the density of the ceramic fiber module should be comprehensively considered according to the furnace type, temperature, combustion medium, and temperature rise requirements of the heat treatment furnace, but a reasonable density should be between 200-240Kg/m³, preferably 220Kg/m³ .
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