Steel rolling system provided with no-twist interchange type rolling piece guiding device

Abstract

The invention discloses a steel rolling system provided with a no-twist interchange type rolling piece guiding device, and is characterized in that a second rolling mil counting backwards in a finish rolling region is a horizontal rolling mill, a sliding type outlet guiding device is arranged on the last but one rolling mill, a movable looping device is arranged at a rolling piece outlet end of the sliding type outlet guiding device, a no-twist interchange type rolling piece guiding device used for changing a row of horizontally-arranged rolling pieces into a vertically-arranged row is arranged at the rolling piece outlet end of the movable looping device, and a last rolling mill provided with an inlet guiding device is arranged at the rolling piece outlet end of the no-twist interchange type rolling piece guiding device, and is of a vertical rolling mill. The invention is applicable to rolling a steel production line, and has the advantages of being capable of omitting a twist guiding device, removing one fault point of the steel rolling process, smoothly realizing changing of the single-line rolling mode of a rolling system into a segmentation rolling mode, reducing the cost of the steel rolling system, being applicable to 4-slitting-segmentation, 5-slitting-segmentation and 6-slitting-segmentation steel rolling systems, and the like.

Description

technical field [0001] The invention relates to a steel rolling system, in particular to a steel rolling system provided with a torsion-free interchange type rolled piece guiding device. Background technique [0002] At present, in the cutting production process of ribbed round steel (that is, rebar), the two-cut technology and the three-cut technology are the earliest developed, and the process technology has long been mature. The four-segmentation technology and the five-segmentation technology appeared relatively late, but after the continuous exploration and research of various scientific research institutes and manufacturers in recent years, the process technology is relatively perfect. The rolling system of ribbed round steel includes rough rolling area, intermediate rolling area and finishing rolling area. Each rolling area is equipped with 6 rolling mills, and each rolling mill is equipped with an entrance guide device and an exit guide device. In the rough rolling ...

AI Technical Summary

Problems solved by technology

In the actual working process of several torsion guide devices connected in parallel, the torsion angles are always different, and it is impossible to be completely consistent. The consistency of each torsion angle is relatively poor, which often leads to several synchronously running elliptical rolling pieces entering the finished product smoothly. Some holes, because the twist angle is greater than or less than 90°, are not in the right position when entering the finished hole, and enter the round hole of the finished product frame in an inclined state, causing rolling accidents and rolling out waste products

Even if the consistency of each torsion guide device can be adjusted, the torsion angle of the rolled piece will be disturbed by various factors during operation, and this consistency is difficult to maintain good stability

For the newly developed six-slit rolling process, the asynchronous instability of torsion is more prominent, which makes it difficult to give full play to the high-yield and high-efficiency advantages of the six-slit rolling process, which restricts the development of the six-slit rolling process

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