Slide rail brick for steel rolling heating furnace bottom

A slide rail brick for a steel rolling heating furnace bottom is composed of a slide rail brick body and a reserve expansion gap. The expansion gap is formed in the middle of the slide rail brick body and filled with refractory fibers. The expansion gap is big-end-up, the depth of the expansion gap is three fourths of the width of the brick body, and the upper edge of the slide rail body is in an arc shape. The slide rail brick for the steel rolling heating furnace bottom has the advantages of being simple in structure, convenient to operate and high in work efficiency. The reserve expansion gap can be formed only with the requirement of embedding burning out admixture in the process of manufacture. The expansion gap is adjusted according to using temperature graded distribution of the slide rail brick and is big-end-up. In the process of using, the temperatures and swell capacities of all positions of the slide rail brick are different, so that the swell capacities in different positions are exposed to meet