The main effects of adding steel fibers to aluminum silicate fiber cotton refractories are: enhancing toughness, improving stress-strain resistance, and improving mechanical shock resistance; improving thermal shock resistance, improving resistance to cracking and peeling; inhibiting curing and drying And linear shrinkage after heat treatment. The amount of steel fiber added is generally 0.6-2.5% (volume ratio).
However, the amount of steel fiber should not be too large. Too much steel fiber will deteriorate the high-temperature physical and chemical properties of the refractory castable. For example, steel fiber will cause the residual linear expansion of the castable after high-temperature firing. At the same time, the content of iron oxide in the castable is increased and its corrosion resistance is reduced. Adding too much steel fiber will also make the workability of the castable worse.
Through the content explained in the article, you can generally understand the specific meaning of not adding excessive steel fiber to the aluminum silicate fiber cotton. I hope that the content explained in the article will be helpful to everyone. In the future operation and use, you should pay more attention to this aspect. Requirements.
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