Triangular-strip-groove-based annular heating furnace bottom working layer construction method

Abstract

The invention relates to a triangular-strip-groove-based annular heating furnace bottom working layer construction method which comprises the following steps: (1) reference line construction; (2) erection of strip groove mold: arranging a radial spacing rack of the strip groove mold on a working layer castable surface between an internal ring beam and an external ring beam; (3) working layer formation: erecting a working layer castable mold, and casting the working layer castables at intervals; and after finishing casting all the working layer castables, removing the mold so as to form the strip grooves on the annular heating furnace bottom working layer surface at radial intervals, thereby finishing the construction of the annular heating furnace bottom working layer, wherein the strip grooves form a triangle. The steel billet can not roll or tilt in the heating process of the furnace bottom; and thus, the steel billet is heated uniformly, thereby avoiding the overoxidation of the steel billet, preventing the iron scales from melting or corroding the furnace bottom working layer castable, prolonging the service life of the furnace bottom and reducing the overhaul frequency.

Description

[0001] The patent application of the present invention is a divisional application with the patent application number 201210575824.2, the patent name is the construction method of the bottom working layer of the annular heating furnace based on the triangular strip groove, and the application date is 2012.12.26. technical field [0002] The invention belongs to the field of annular heating furnaces, in particular to a method for constructing a working layer at the bottom of an annular heating furnace based on triangular strip-shaped grooves. Background technique [0003] In the metallurgical industry, the annular heating furnace is a thermal equipment used to heat round steel billets in pipe rolling mills. The pouring material for the working layer at the bottom of the furnace is generally poured into a plane, and the steel billet is put into the steel billet through the steel tongs above, and the bottom of the furnace is rotated to heat it. . During the use of the furnace b...

AI Technical Summary

Problems solved by technology

During the use of the furnace bottom, problems are exposed: after charging, due to the plane and rotation of the furnace bottom, the steel billet rolls, and the distance between the billets is large or small, which makes the heating uneven

Some steel billets are close to each other, and the steel tongs may scratch the adjacent steel billets when discharging, which will affect the quality of rolling

Some billets are tilted, and the steel clamps cannot be clamped when discharging, resulting in continuous heating, excessive oxidation, melting of the oxide scale, erosion of the pouring material of the working layer of the furnace bottom, shortening the service life of the furnace bottom, increasing the number of maintenance, and expanding the cost

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