Arrangement and operation method of medium and small-sized steel tandem rolling process accident shear

Abstract

The invention discloses an arrangement and operation method of a medium and small-sized steel tandem rolling process accident shear. The arrangement of the process accident shear is as follows: a hot shear and a wrench shear are arranged at the rear side of a rough rolling incoming material roller bed; a flying shear is arranged at the rear part of an intermediate mill of a tandem mill; the hot shear, the wrench shear and the flying shear are in a ready mode; a shear mouth is opened, and a rolled piece can freely pass through and can enter the tandem mill to be rolled after passing through the hot shear and the wrench shear; and the rolled piece can enter a finish rolling part at the rear of the tandem mill to be rolled after passing through the intermediate mill of the tandem mill and the flying shear. With the adoption of the arrangement and operation method of the medium and small-sized steel tandem rolling process accident shear, the difficulty that the rolled piece is not easy to process in a rolling groove is solved, damage of a roller rolling groove is avoided, the material consumption is reduced, and the economic benefit of enterprises is improved.

Description

technical field [0001] The invention belongs to the field of metallurgical steel rolling technology, and in particular relates to an operation method for arrangement of accident shears in the continuous rolling process of small and medium-sized steel and for crushing and segmenting waste materials. Background technique [0002] In the traditional section steel continuous rolling process, the shearing machine is generally arranged in front of the continuous rolling mill to perform head cutting or segmentation. Such an arrangement cannot handle the scrap when dealing with rolling faults. Once the rolled pieces are continuously bitten into the continuous rolling mill, if it is difficult to bite into the steel in a certain pass, the rolled pieces rolled out by the following rolling mill will pile up the steel and stop the machine, and each rolling mill has rolled pieces stuck on the rolls inside the hole. When processing, first cut off the rolled piece outside the roll with ga...

AI Technical Summary

Problems solved by technology

In this way, one is time-consuming and labor-intensive, and the other is that the hot-rolled piece will damage the roll in the groove for a long time, which affects the output of the rolling mill and the service life of the roll.

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