Four-roll roll-arranging type profile steel blooming mill

Abstract

The invention provides a four-roll roll-arranging type profile steel blooming mill, belongs to a metal rolling mill, and particularly relates to a three-roll type steel rolling mill. A rolling mill base is provided with an upper roll a and a lower roll b, the two rolls are the same in length and roll diameter, the roll faces are each provided with 5-7 rolling grooves, and the rolling grooves are the same in position and shape. A middle roll is at least configured with a middle roller body c and a middle roll body d, the middle roll body c and the middle roll body d are the same in structure and provided with rolling grooves, and the rolling grooves correspond to the rolling grooves in the upper roll and in the lower roll. The upper roll a, the middle roll c and the lower roll b are fixed to the rolling mill base from top to bottom according to the primary roll-arranging type of the upper roll a, the middle roll c and the lower roll b, or the upper roll a, the middle roll c and the lower roll b are fixed to the rolling mill base from top to bottom according to the roll-replacing roll-arranging type of the lower roll b, the middle roll c and the upper roll a. The four-roll roll-arranging type profile steel blooming mill has the advantages that the two rolling rolls of the same structure are adopted, the two middle roll bodies of the same structure are adopted, the two rolling rolls are dispatched in an up-down mode to be used in cooperation with the two middle roll bodies, all the rolling grooves of the rolling rolls are fully utilized, the utilization rate of the rolling rolls is increased, and 1/3 the rolling roll cost is saved; when roll-replacing and roll-arranging are conducted, the process of transporting new rolling rolls is omitted, the roll replacing time is saved, and smooth steel rolling production is guaranteed.

Description

technical field [0001] The invention belongs to a metal rolling mill, in particular to a three-roll section steel rolling mill. Background technique [0002] The three-high rolling mill is an important equipment for profile rolling. The front and rear work rolls, the back work roll and the lift table and their corresponding transmission mechanisms are set up in front of and behind the rolling mill to implement reversible rolling of the rolling mill. An upper roll, a middle roll and a lower roll are arranged on the stand of the currently used three-high rolling mill, which are connected with the transmission mechanism, and the middle roll is matched with the upper and lower rolls. There are 2-3 grooves on the upper roll, 3-4 grooves on the lower roll, and the shape of each groove is different. There are 5-7 grooves on the middle roll, corresponding to the grooves of the upper and lower rolls. , The middle and lower roll shafts are set horizontally, arranged vertically and fi...

AI Technical Summary

Problems solved by technology

The existing problem is that because the number and shape of the rolling grooves set by the upper roll, the middle roll and the lower roll are different, when the steel rolled by the rolling mill reaches the set value, the rolling grooves of the three rolls are worn due to excessive steel and need to be rolled. All were dismantled and replaced in time, but half of the rolling grooves of the upper and lower rolls were not used, resulting in low utilization of the upper and lower rolls, high cost of spare parts, and increased production costs; The first, middle and lower rolls are all removed, and then the three rolls are reinstalled. The work is cumbersome, the roll changing time is long, the production efficiency of the rolling mill is low, the energy consumption is increased, and the rolling production is affected.

Images