The construction method of the bottom working layer of the annular heating furnace

Abstract

The invention relates to an annular heating furnace bottom work layer construction method. The construction method comprises the following steps: 1, constructing a datum line; 2, erecting a strip-shaped groove die on the surface of a work layer casting block between an inner annular beam and an outer annular beam in a radial manner; and 3, work layer molding: erecting a work layer casting block die, carrying out spaced block casting to obtain a work layer casting block, demolding after the casting of all work layer casting blocks to obtain radial-spaced strip-shaped grooves on the surface of an annular heating furnace bottom work layer in order to complete the annular heating furnace bottom work layer construction. A furnace bottom made in the invention makes billets not roll and incline in the heating process, uniformly heated and not excessively oxidized in order to prevent the erosion of the furnace bottom work layer casting material by the melting of iron scales, so the service life of the furnace bottom is prolonged, and the maintenance frequency is reduced.

Description

technical field [0001] 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. Background technique [0002] 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 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 qua...

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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