Air mist cooling device for 2+8 roller combined type thick slab big screwdown casting-rolling machine

Abstract

The invention provides an air mist cooling device for a 2+8 roller combined type thick slab big screwdown casting-rolling machine and belongs to the technical field of slab continuous casting production. The air mist cooling device for the 2+8 roller combined type thick slab big screwdown casting-rolling machine comprises an upper water cooling beam, an upper protective plate, an upper water sealing plate, a water spraying ring, a lower protective plate, a lower water cooling beam and a lower water sealing plate. One end of the upper protective plate is fixed to the upper water cooling beam through bolts. The upper water sealing plate and the water spraying ring are located on bearing bases in roller diameter positions on two sides of a casting-rolling machine respectively. The upper watersealing plate and the lower water sealing plate are located between the water spraying ring and a big screwdown roller of the casting-rolling machine. One end of the lower protective plate is fixed to the lower water cooling beam through bolts, and the other end of the lower protective plate is connected with the bearing bases of the casting-rolling machine. The lower water sealing plate is installed on the bearing bases in the roller diameter positions on two sides of the casting-rolling machine. The air mist cooling device of the 2+8 roller combined type thick slab big screwdown casting-rolling machine has the advantages that an air mist cooling manner is adopted; and problems such as big screwdown roller deforming and cracking brought about by poor cooling are effectively solved.

Description

Technical field [0001] The invention belongs to the technical field of slab continuous casting production, and particularly relates to a 2+8-roll combined thick slab large reduction casting and rolling mill aerosol cooling device. Background technique [0002] The 2+8-roll combined thick slab high-reduction casting and rolling mill can solve the internal looseness and shrinkage defects of thick slabs, improve the density of continuous casting slabs, and realize the reduction of thick plates and large-size profiles under the condition of low rolling reduction ratio. Stable production. Compared with the rough rolling mill roll, the heating of the large reduction roll of the casting rolling mill has the following characteristics: 1. Long continuous contact time. The drawing speed of the thick slab continuous caster is generally 0.5m / s~1.25m / min, so the same part of the large reduction roll has a longer contact time with the steel plate. 2. The arc length of the contact arc relativ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a 2+8-roll combined thick slab large-reduction casting mill air mist cooling device to solve the problems of large-reduction roll deformation and cracks caused by poor cooling

Images