Steel fiber refractory castables combine the advantages of monolithic refractory materials. Rongsheng unshaped refractory material manufacturer is a powerful refractory material manufacturer. Our environmentally friendly, fully automatic unshaped refractory material production line has an annual output of tons. At the same time, Rongsheng’s new refractory precast shapes factory is also under preparation. Providing better refractory lining material services for high-temperature industrial furnaces is the service goal of Rongsheng Refractory Materials Manufacturer.
Steel Fiber Castable Definition, Types, Characteristics, and Uses
Steel fiber castable definition. Steel fiber reinforced refractory castable refers to a refractory material that increases its strength by adding steel fibers to unshaped refractory aggregates. Steel fiber reinforced castables use special-grade bauxite clinker as aggregate, and high-quality bauxite clinker and corundum fine powder as the matrix. It is formulated with ultrafine powder and other composite materials as binders and additives, plus stainless steel heat-resistant fibers. At the same time, due to the addition of steel fibers, the overall strength of the furnace wall is greatly enhanced after the material is poured. Similarly, adding steel fibers to refractory plastic is called fiber-reinforced refractory plastic.
Types and applications of steel fibers. Commonly used fibers include ordinary steel fiber, heat-resistant (stainless) steel fiber, carbon fiber, alumina fiber, aluminum silicate fiber, and organic fiber. From the perspective of reinforcement and fire protection effects, heat-resistant steel fibers and alumina fibers are now commonly used to make high-strength refractory materials. Ordinary steel fiber has a poor fire protection effect, and carbon fiber is more expensive, so it is less used. Organic fibers are often used as explosion-proof agents for dense, high-strength refractory castables and have certain applications.
Properties of steel fiber castables. The types of steel fiber-reinforced refractory castables can be named high-aluminum steel fiber high-strength castables or corundum steel fiber-reinforced refractory castables according to the materials of aggregates and powders. These materials have high strength, good toughness, high resistance to thermal shock, and good resistance to spalling.
Uses of steel fiber castables. Steel fiber castables are widely used in key parts of kilns and thermal equipment such as heat treatment furnaces, heating furnaces, soaking furnaces, tundish slag weirs, external refining, and catalytic cracking units. And achieved good results in both technical and economic benefits.
Rongsheng refractory castable manufacturer. Adding heat-resistant steel fibers to refractory castables is called steel fiber-reinforced refractory castables. Improved the strength, toughness, thermal shock resistance, etc. of the castable. Steel fiber refractory castables are mainly used in kilns and equipment such as heating furnaces, heat treatment furnaces, and soaking furnaces.
The Amount of Steel Fiber Used in Steel Fiber Refractory Castables
In order to enhance the toughness of refractory castables, an appropriate amount of stainless steel fiber is often added to the refractory castables. In engineering terms, this kind of refractory castable containing stainless steel fibers is called steel fiber reinforced refractory castable, or steel fiber refractory castable for short. Steel fiber refractory castable has a certain deformation ability and high flexural strength. It is mainly used in areas with frequent and severe thermal shock and areas with strong friction and erosion. However, the use temperature of steel fiber refractory castables is limited by the critical oxidation temperature of steel fibers, and the castables are not used in places that are in direct contact with highly corrosive media.
Steel fiber refractory castables for building materials industrial furnaces are toughened refractory castables formulated with high alumina bauxite clinker or corundum as aggregates and powders, adding binders and appropriate amounts of stainless steel fibers and additives. The amount of steel fiber added should be determined through experiments according to the conditions of use, and should not exceed 4% (weight ratio).
Unshaped Refractory Materials 