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What is the role of adding steel fiber to refractory castables?

Refractory castable is a granular and powdered material made from a refractory material with a certain amount of binder. The refractory castable has a high fluidity and is formed by casting. The main role of adding steel fiber to refractory castables are:

(1) Enhance toughness, improve stress-resistance and improve mechanical shock resistance;

(2) Improve thermal shock resistance and improve resistance to cracking and spalling;

(3) Inhibition of line shrinkage after curing, drying, and heat treatment. The amount of steel fiber added is generally 0.6 to 2.5% by volume.

Tags: steel fiber, refractory castable,

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