Low creep brick
Low-creep bricks are a type of refractory material designed to minimize slow plastic deformation (creep) under high-temperature and load conditions, thereby enhancing high-temperature dimensional stability.
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Detailed introduction
Product Introduction
Low-creep bricks are a type of refractory material designed to minimize slow plastic deformation (creep) under high-temperature and load conditions, thereby enhancing high-temperature dimensional stability.
These bricks are typically based on high-quality refractory raw materials. For example, low creep clay bricks mainly use materials such as bauxite, andalusite, or electrofused mullite as their primary ingredients, with small amounts of additives added. They are produced through a high-pressure forming process followed by high-temperature sintering.
Product Features
Its core feature is a relatively low creep rate—for instance, under a load of 0.2 MPa, in high-temperature tests conducted at temperatures ranging from 1200°C to 1250°C, the creep rate can be controlled between 0.5% and 0.8%. At the same time, these bricks also exhibit a high softening temperature under load (e.g., no lower than 1450°C), excellent room-temperature compressive strength (up to 30–50 MPa), and a low apparent porosity (generally no greater than 16%).
Product Applications
Low-creep bricks are widely used in high-temperature environments such as industrial kilns and hot blast stoves for blast furnaces, particularly in critical areas like heat-storage chambers and checker bricks, where they effectively withstand high temperatures and pressure challenges. Compared to conventional refractory bricks, low-creep bricks exhibit significantly improved creep resistance and extended service life of kilns, thanks to optimized raw material formulations—such as the incorporation of mullite or sillimanite—and stringent process controls.
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