High-speed bar single-hole-pattern production line

Abstract

The invention relates to a high-speed bar single-pass production line, which comprises a roughing mill group, an intermediate mill group, a pre-finishing mill group, a first finishing mill group and a second finishing mill group, wherein the hole pattern of the intermediate mill group adopts a double-cutting system, the pre-finishing mill group comprises a first line pre-finishing mill group and a second line pre-finishing mill group, the first finishing mill group comprises a first line finishing mill group and a second line finishing mill group, and the second finishing mill group comprises a third line finishing mill group and a fourth line finishing mill group. The diameter of a base circle corresponding to the hole pattern of a rolling mill, positioned at the tail end of the rolling direction, in the intermediate rolling mill group is 28.0-28.5 mm. Each of the third line finishing mill group and the fourth line finishing mill group comprises two finishing mills, and each finishing mill in the second finishing mill group is independently driven by a motor. According to the production line, the number of spare rollers, roller rings and matched guides of the production line can be greatly reduced, the workload is reduced, the labor intensity is reduced, the production efficiency of the production line is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgical steel rolling high-speed bar rebar production technology, in particular to a high-speed bar single pass production line. Background technique [0002] High-speed bar production line is mainly used for small-sized rebar for construction The production of its finished rolled pieces has a rolling speed higher than 40m / s, which has the characteristics of high output, low cost, high dimensional accuracy, and high yield. Conventional typical high-speed bar production line layout is as follows: figure 1 As shown, the production line mainly includes rough rolling unit 01, intermediate rolling unit 02, pre-finishing rolling unit 03, finishing rolling unit 04, double-scale flying shear 05, high-speed steel feeding device 06, cooling bed area equipment 07 and collection area equipment 08. [0003] Among them, the rough rolling unit 01 includes six rolling mills, arranged alternately according to the...

AI Technical Summary

Problems solved by technology

However, when adjusting the roll gap, it is not necessary to replace the roll or roll ring, only to raise or lower the roll gap slightly; when it is empty, just remove the original roll or roll ring and the supporting guide of the rolling mill, and then replace it with an empty one. The roller table or empty pipe is enough, and there is no need to install guides, and it does not need to be adjusted when installing the empty roller table or empty pipe, which is simple and convenient; and replace the roll or roll ring with a new roll or roll ring, it is necessary to remove the original roll or roll ring and the supporting guide of the rolling mill, and then install the new roll or roll ring and the new supporting guide, and install the new roll or roll ring It also needs to be re-adjusted when changing the roll, and the time to change the roll is long, the workload is heavy, the labor intensity is high, and the operating efficiency of the production line is reduced. And the more supporting guides and guards, greatly increasing the inventory cost of the production line

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