JPH05277524A - Roll cleaning equipment for multistage roll mill - Google Patents

Abstract

PURPOSE:To clean intermediate rolls by using chock separators effectually and jetting liquid. CONSTITUTION:Liquid paths 2 are provided over the largest plate width of a rolling material S in the chock separators 1 below a pass line and many liquid injection nozzles 4 are arranged in parallel in the chock separators 1 to jet the liquid from these liquid paths 2 toward intermediate rolls 51 below the pass line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate roll cleaning device for a multi-high rolling mill having a plurality of intermediate rolls below a pass line.

[0002]

2. Description of the Related Art FIG. 3 is a longitudinal sectional view showing an essential part of an example of a conventional multi-high rolling mill. In the above figure, 51 is an intermediate roll, which is arranged above and below the pass line of the rolled material S,
Both ends thereof are supported by an intermediate roll chock 58 fitted in the housing 70.

Reference numeral 52 is a work roll, which is arranged so as to be rotated by being pressed by both of the intermediate rolls 51 and the respective divided reinforcing rolls 53. Reference numeral 61 is a chock separator, which is provided so as to connect the lower working side and the driving side intermediate roll chock 58.

Reference numeral 66 denotes a nozzle, which is arranged in a row in a header 65 fixed below the pass line and injects a lubricating liquid to the work roll 52 below over the length of the maximum strip width of the rolled material S. It is like this. Further, 68 and 69 are also nozzles, and a header 67 fixed above the pass line.
Are arranged in a row to inject the lubricating liquid to the upper work roll 52 and the intermediate roll 51 over the entire length of the rolled material maximum plate width.

Therefore, the upper and lower work rolls 52 are pressed down through the intermediate rolls 51 by the respective divided reinforcement rolls 53 and the central divided reinforcement rolls 56, and the respective intermediate rolls 5
By rotating 1 the other rolls 52, 53,
By rotating 56, the lubricating liquid supplied to the headers 65, 67 is jetted from the nozzles 66, 68, 69 toward the upper and lower work rolls 52 to roll the rolled material S.

[0006]

By the way, in the rolled material S having extremely strict surface properties, foreign matter such as metal powder generated by rolling the rolled material S from the work roll 52 below the pass line is an intermediate roll 51 below the pass line. The adhesion to the surface deteriorates the surface quality. For this reason,
It is necessary to inject a lubricating liquid to the intermediate roll 51 below the pass line to wash away foreign matters for cleaning.

However, in the conventional device, the chock separator 61 below the pass line interferes with the header 65.
Therefore, it was difficult to inject the lubricating liquid to the intermediate roll 51 below the pass line.

Therefore, an object of the present invention is to enable the cleaning of the intermediate roll by liquid injection by effectively utilizing the chock separator.

[0009]

Means for Solving the Problems In order to achieve the above-mentioned object, the structure of the present invention is a multi-stage rolling mill in which intermediate roll chocks supporting both ends of an intermediate roll are connected by a chock separator. A liquid passage is provided over the length of the maximum plate width of the material, and a large number of liquid jet nozzles for jetting the liquid from the liquid passage toward the intermediate roll are provided in the chock separator.

[0010]

[Operation] During the rolling of the rolled material, the liquid supplied to the liquid passage of the chock separator is jetted from the liquid jet nozzle to the intermediate roll, and the foreign substances adhering to the intermediate roll from the work roll and the rolled material are washed off and cleaned. It is possible to prevent deterioration of the surface quality of the rolled material due to the foreign matter.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a vertical sectional view showing a main part of a multi-high rolling mill according to the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In FIGS. 1 and 2, the same members as those in FIG. 3 are designated by the same reference numerals, and overlapping description will be omitted.

In the above figure, 1 is a chock separator, in which a liquid passage 2 is provided to form a header, and intermediate roll chocks 3, 58 below the pass line are connected at the inlet side and the outlet side. It is fixed to.

In the intermediate roll chock 3 on the working side,
A liquid passage 8 communicating with the liquid passage 2 is bored, and a liquid supply hose 5 is connected to the outer end of the liquid passage 8 via a quick joint 6.

And, in the chock separator 1,
A large number of nozzles 4 are arranged in a row over the maximum plate width of the rolled material S so that the lubricating liquid can be jetted toward the intermediate roll 51.

Next, the operation of this apparatus will be described. The upper and lower work rolls 52 are pressed down by the respective divided reinforcing rolls 53 and the central divided reinforcing rolls 56 via the intermediate rolls 51, and the respective intermediate rolls 51 are rotated by a drive device (not shown), so that other rollers 52, 53 5
6 is rotated to inject the lubricating liquid supplied to the respective headers 65, 67 from the respective nozzles 66, 68, 69 to the upper and lower work rolls 52 and the upper intermediate roll 51, and at the same time, the liquid supply hose 5 and the intermediate roll chock 3 The lubricating liquid supplied from the liquid passage 8 to the liquid passage 2 of the chock separator 1 is jetted from each nozzle 4 to the intermediate roll 51 below the pass line, and the work roll 52 below the pass line and the rolled material S from the intermediate Foreign matter such as metal powder adhering to the roll 51 is washed away and cleaned. Therefore, the deterioration of the surface quality of the rolled material S due to the adhesion of the foreign matter to the work roll 52 is prevented.

The chock separator 1 for connecting the intermediate roll chocks 3, 58 below the pass line is indispensable for changing the combination of the intermediate rolls 51, but the chock for connecting the intermediate roll chocks 3, 58 above the pass line. It goes without saying that the present invention can be applied even when a separator is provided.

[0017]

According to the present invention, the chock separator is provided with the liquid passage and the liquid jet nozzle, and the liquid jet nozzle jets the liquid to the intermediate roll to wash away the foreign matters adhering to the intermediate roll for cleaning. As a result, this foreign substance does not adhere to the work roll and is not transferred to the rolled material, and it is possible to cope with rolling of the rolled material that requires extremely strict surface properties.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a main part of a multi-high rolling mill as an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a vertical cross-sectional view showing a main part of a conventional multi-high rolling mill.

[Explanation of symbols]

 1 Chock Separator 2 Liquid Passage 3 Intermediate Roll Chock 4 Nozzle 8 Liquid Passage 51 Intermediate Roll 58 Intermediate Roll Chock S Rolled Material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shunichi Hirayama 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (1)

[Claims] 1. A multi-stage rolling mill in which intermediate roll chocks supporting both ends of an intermediate roll are connected by a chock separator, and a liquid passage is provided inside the chock separator over the length of the maximum strip width of the rolled material, and the liquid passage is formed. A roll cleaning device for a multi-stage rolling mill, characterized in that a large number of liquid injection nozzles for injecting a liquid from a path toward the intermediate roll are provided in the chock separator.