JPS60221103A - Casting and rolling installation - Google Patents

Abstract

PURPOSE:To enable continuation of a continuous casting machine and rolling machine by grasping the casting steel sheet between a continuous casting machine and a rolling mill by means of support rolls and advancing and retreating the support rolls in accordance with the difference between a casting speed and rolling speed. CONSTITUTION:The steel sheet 4 cast by the continuous casting machine 1 is fed via a support device 5 and a roller table 6 to the rolling mill 7, by which the steel sheet is rolled. The casting speed of the sheet 4 from the machine 1 is detected by a speed detector 15 and the rolling speed by a speed detector 17 via a work roll 16. The respective detected results are inputted to a calculator 18. The speed difference is calculated in the calculator 8 and is inputted to a control device 14. The device 14 advances and retreats the support rolls 11 to and from the sheet 4 in accordance with the speed difference, thereby absorbing the speed difference.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to casting and rolling equipment that can perform continuous operations from casting to rolling.

``Prior art'' This technology casts slabs, and the spinning speed of the continuous casting machine and the rolling speed of the rolling mill are very different, so in existing equipment, the continuous casting machine and the rolling mill cannot be made continuous. Not yet.

For this reason, the continuous casting machine and rolling mill are completely separate equipment.
A transport device for transporting strips, etc. between both facilities, or a heating device for reheating the slab to a predetermined temperature for rolling is required. Therefore, there were problems in terms of large-scale equipment, productivity, and running costs.

Therefore, in recent years, cooling rolls have been made to face each other with a required gap,
A twin-roll type continuous casting machine that rotates the cooling roll while cooling it, cools and solidifies the molten steel from the gap between the cooling rolls, and immediately produces steel plates from the molten steel, or an endless track mold wall in which cooling blocks are connected endlessly. A continuous track type continuous casting machine has been proposed in which a strip-shaped space is formed, the mold wall is cooled and the molten steel is circulated, and the molten steel is cooled and solidified.

The success of the production of Enshi Asu's Rinshi Fukuri is simply amazing, and it has become possible to connect the continuous casting machine and rolling mill online, which immediately rolls the cast steel plate with a rolling mill.

However, the spinning speed of a continuous casting machine and the rolling speed of a rolling mill are not necessarily constant; for example, if the level of the molten steel sump fluctuates, the casting bath speed will change, and if the hot marks on the strip change, the rolling mill speed will change. The rolling speed changes respectively. Therefore, it has not been possible to directly connect the continuous casting machine and rolling mill.

[Problems to be Solved by the Invention] In view of the above-mentioned circumstances, the present invention makes it possible to cope with the difference between the spinning speed of the continuous casting machine and the rolling speed of the rolling mill, and to solve the problem between the continuous casting machine and the rolling mill. The purpose is to embody the continuity of.

[Means for Solving the Problem 1] The present invention provides a support device between a continuous & I forming machine and a rolling mill that holds the cast steel plate between support rolls that can move in and out of the steel plate and guide it to the rolling mill. , speed detectors for detecting the speed of the steel plate are installed on the upstream side of the rolling mill and on the downstream side of the rolling mill or the rolling mill, and both detectors detect the spinning speed and rolling speed, and the speed is adjusted according to the speed difference between the two speeds. The support roll is moved in and out of the steel plate, and the path length of the steel plate from the casting mill 111m to the rolling mill is changed to absorb the speed difference.

[Example] The present invention will be described in detail below with reference to the drawings.

In the figure, 1 is a twin-roll continuous casting machine, and cooling rolls 2 and 2 are cooled by cooling water from a cooling water source (not shown).
is rotated by the motor 3, thereby casting a steel plate.

The cast steel plate 4 is connected to a support device 5 and a roller table 6.
After that, it is sent to rolling@7, where it is continuously rolled following casting.

The support device 5 will now be explained. Support frames 8 and 9, which sandwich the steel plate 4 and face each other, are rotatably provided with support rolls io and it on a required curvature so as to smoothly guide the cast steel plate 4 to rolling t11. The support frames 8, 9 are each supported via hydraulic cylinders 12.13. One cylinder 12 is operated to constantly press the support roll 10 against the steel plate 4 with a predetermined pressing force, and the other cylinder 13 is operated by the control device 14 to control the position of the V-boat roll 11. .

A speed detector 15 for the steel plate 4 is provided upstream of the support device 5 (on the continuous casting machine side), and a speed detector 17 is connected to the work roll 16 of the rolling mill 1. Both detectors15. i7 are each connected to an arithmetic unit 18, and the arithmetic unit 18 is connected to the control device 14 described above.

Next, we will explain the operation of the above equipment.

The spinning speed of the steel plate 4 cast by the continuous casting Ij11 is detected by a speed detector 15, and the rolling speed is detected by the speed detector 11 via the work roll 16. Rain detection l 15° The detection result from 11 is input to the calculator 18, the speed difference is calculated, and the calculation result is input to the control device 14. If the mackerel spinning speed is higher than the rolling speed, the cylinder 13 is shortened and supported. roll 11
is moved backward, and the loop of the steel plate in the portion passing through the support device 11 is made larger to absorb the speed difference. Further, when the rolling speed is high, the cylinder 13 is extended to reduce the loop state and compensate for the shortfall in rolling @7.

However, even if there is a difference between the spinning speed of the C1 continuous casting machine 1 and the rolling speed of the rolling mill 7, the support device 5 changes the sheet passing route and absorbs the speed difference. Complete continuity with machine 1 is possible.

Incidentally, in the above embodiment, the continuous casting machine 1 is of a twin-roll type, but it goes without saying that the continuous casting machine 1 can be implemented in the same manner even if it is of an endless track type. Further, the speed detector 15 may be located upstream of the rolling mill other than that shown in the above embodiment, and the speed detector 11 may also be provided downstream of the rolling mill.

[Effects of the invention] ■G; Adding A + ★ Guo I'll L-) Handle I A It becomes possible to connect the rolling machine continuously, and continuous casting 3a is possible.
By connecting the rolling mill and the rolling mill continuously, it is possible to reduce equipment costs, improve productivity, and save energy.

[Brief explanation of the drawing]

The drawings are schematic illustrations of one embodiment of the present invention. 1 is a continuous casting machine, 5 is a support device, 1 is a rolling machine, 10
．． 11 indicates a support role, and 15.16 indicates a rapid epidemic detector. Patent application Hitoshi Kawajima Banfg [Kogyo Co., Ltd.

Claims (1)

[Claims] 1) A support device in which a continuous casting machine and a rolling mill are connected in series, and a steel plate cast between the continuous casting machine and the rolling machine is held between support rolls that can be moved in and out of the steel plate and guided to the rolling mill. A speed detector is installed upstream of the rolling mill to detect the spinning speed, and a speed detector is installed downstream of the rolling mill or the rolling mill to detect the rolling speed. Casting and rolling equipment characterized by being configured so that a roll can be moved in and out of a steel plate.