JPS62114702A - Rolling installation - Google Patents

Abstract

PURPOSE:To prevent the formation of the fish tail of a rolling material and to reduce the size over the entire part of an installation by disposing a flying cross press device between a supply section for a high-temp. crude steel and primary rolling device. CONSTITUTION:The high-temp. crude steel 2 heated in a heating furnace 1 is supplied via a descaling device 3 to a roughing mill device 6. The flying cross press device 7 is disposed between the descaling device 3 on the outlet side of the furnace 1 and the 1st stage of the rolling device of the device 6. A device 7 is constituted of metallic molds 8, 9 to make cross rolling reduction of both cross ends of the crude steel 2 by press contact therewith, a frame 10 and screw down cylinders 11, 12. The frame 10 is moved by feed cylinders 13, 14 along the supply line for the crude steel 2. The high-temp. crude steel 2 is cross rolled down by the molds 8, 9 during the movement. Since the formation of a dog bone is prevented by such method, the formation of the fish tail is prevented and the size over the entire part of the installation is reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to rolling equipment.

[Conventional technology] Conventionally, high-temperature crude steel (slabs and blooms) sent from a heating furnace and continuous caster are processed according to the requirements of the rolling schedule.
In order to reduce the width direction dimension, width rolling is carried out using rolls using a sizing mill.

[Problems to be Solved by the Invention] However, in the conventional width reduction by roll rolling, the deformation region is concentrated at the edges of the crude steel (dog bones occur).
This causes an increase in the occurrence of fishtails in the next step of horizontal rolling, and it is therefore necessary to preform the tip of the crude steel. In addition, in width reduction by roll rolling, the amount that can be rolled in one stage is small, so if a large amount of width reduction is required, rolling must be performed multiple times with a width rolling device, which increases the length of the entire rolling equipment. There's a problem. In addition, in width reduction using a conventional press, the high temperature crude steel is temporarily stopped and width reduction is performed, so the high temperature crude steel is stopped, accelerated,
It requires a transfer cycle of transfer, deceleration, and stop, and has the drawback of using a very large amount of power and causing damage to the high-temperature crude steel.

The present invention was made by focusing on the above-mentioned conventional problems.
In rolling equipment that rolls high-temperature crude steel, we aim to reduce the occurrence of fishtails and downsize the entire equipment.
Moreover, the purpose is to save energy and prevent the occurrence of scratches.

[Means for Solving the Problems] The present invention was made in an attempt to solve the above technical problems, and includes a crude steel supply section that supplies high-temperature crude steel such as a heating furnace and continuous casting equipment, and a crude steel supply section that supplies high-temperature crude steel from the crude steel supply section. The present invention relates to a rolling facility characterized in that a running width press device is disposed between a first rolling device that rolls and forms supplied high-temperature crude steel.

[Function] Therefore, in the present invention, a running width press device is installed between the crude steel supply section and the first rolling device in the rolling equipment, and width reduction pressing is performed between the runs. Width reduction can increase the overall thickness of the high temperature crude steel in the width direction and prevent the formation of dog bones, thereby preventing the formation of fishtails in downstream rolling equipment. In addition, since width reduction by a press can take a large amount of width reduction at one time, even when a large amount of width reduction is required, the number of running width press devices can be reduced and the overall equipment can be made smaller. etc., can solve conventional problems.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the present invention applied to rolling equipment for plate-shaped crude steel, in which high-temperature crude steel 2 from a heating furnace 1, which is a crude steel supply section, is passed through a descaling device 3 to an edger 4 horizontally. In the rolling equipment configured to feed a rough rolling device 6 consisting of a rolling device 5, a rolling gap is provided between the descaling device 3 on the outlet side of the heating furnace 1 and the first rolling device of the rough rolling device 6. A width press device 7 is provided.

The running width press device 7 presses a press mold 8.9 onto both width ends of the high temperature tempered steel 2 to perform width reduction.
A reduction cylinder 11.12 attached to the frame 1
The press mold is equipped with a feed cylinder 13, 14 that moves the steel 0 reciprocally along the supply line of the high temperature crude steel 2, and is moved together with the high temperature crude steel 2 by the action of the cylinders 11, 12, 13, 14. It is possible to perform width reduction by 8 and 9.

Further, the running width press device 7 may be operated by various methods such as a crank link type or a rack and pinion type.

As described above, when the rolling width press device 1 is installed between the heating furnace 1 and the first rolling device of the rough rolling device 6, the overall thickness of the high temperature steel 2 in the width direction is increased by press width reduction. Therefore, the occurrence of fishtails during rolling by the rough rolling device 6 on the downstream side is reduced.

In addition, since the rolling width press device 7 can take a large amount of width reduction in one run, it is possible to prevent the rolling equipment from becoming long even when a large width reduction amount is required, and it is possible to prevent the rolling equipment from becoming too long. Productivity is not hindered due to width pressing.

FIG. 2 shows an example of the application to rolling equipment for shaped steel.
and the rolling mill W15, a high-g crude steel 16 made of shaped steel is
A running width press device 7 is arranged to perform width press.

Also, Fig. 3 shows the equipment applied to rolling equipment for high temperature crude steel 18 from continuous casting n17, which is the crude steel supply section. 117 and a descaling device 2 installed upstream of the finishing rolling device 19
Between 0 and 0, there is a high temperature phase consisting of slabs! A running width press device 7 that performs 418 width presses is disposed.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, according to the rolling equipment of the present invention, the running width press device is provided between the crude steel supply section and the first rolling equipment in the rolling equipment for high-temperature crude steel, thereby making it possible to reduce the dogbone. This has the excellent effect of reducing the size of the entire equipment by preventing the occurrence of fishtails due to downstream rolling by performing width reduction without causing fishtail, and by obtaining a large amount of width reduction by width reduction using a press. .

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a diagram showing one embodiment of the present invention applied to rolling equipment for plate-shaped high-temperature crude steel, and Fig. 2 is another embodiment of the present invention applied to rolling equipment for high-temperature crude steel made of shaped steel. An example diagram, FIG. 3 shows still another embodiment 8 of the present invention applied to rolling equipment for high-temperature crude steel from a continuous caster.
It is an iJ diagram. 1 is a heating furnace, 2 is a high-temperature crude steel, 3 is a descaling device,
6 is a rough rolling device, 7 is a running width press device, 8 and 9 are press molds, 11.12 is a reduction cylinder, 13.14 is a feed cylinder, 15 is a rolling device, 1G is a high temperature crude steel, 17 is a continuous casting 18 is a high-temperature crude steel mill, and 19 is a finish rolling device. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1) A running width press device is arranged between a crude steel supply section that supplies high-temperature crude steel such as a heating furnace and continuous casting equipment, and a first rolling device that rolls and forms the high-temperature crude steel supplied from the crude steel supply section. This rolling equipment is characterized by: