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Steel plate manufacturing equipment and steel plate manufacturing method

A technology of manufacturing equipment and manufacturing method, which can be applied to the manufacturing equipment of steel plates and the manufacturing field of steel plates, and can solve the problems of high cost and high

Active Publication Date: 2020-05-22
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape defect of the cooled steel plate will cause operational troubles such as obstacles to the passage of the steel plate in the production line, and it will require pressurization in the subsequent process and smoothing (Japanese: finishing) treatment by the leveling machine, so the cost will also increase

Method used

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  • Steel plate manufacturing equipment and steel plate manufacturing method
  • Steel plate manufacturing equipment and steel plate manufacturing method
  • Steel plate manufacturing equipment and steel plate manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] use figure 1 The fabrication facility shown produces steel plates. A steel plate 5 having a thickness of 25 mm and a width of 3500 mm was produced by a hot rolling mill 1 , and then the shape of the steel plate 5 was corrected to a predetermined steepness by a first shape correcting device 2 and sent to an accelerated cooling device 3 . In addition, the steepness of the steel plate 5 is controlled by adjusting the reduction setting of the first shape correcting device 2 . In addition, if necessary, straightening is performed by the second shape straightening device 4 , and when strain occurs after straightening by the second shape straightening device 4 , straightening is performed again by a cold straightening machine.

[0113] As an accelerated cooling device3, such as figure 2 As shown, one unit with cooling nozzles 32 arranged between dewatering rollers 31 and a pressing load control mechanism 33 is installed, and ten units are used in the traveling direction of ...

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PUM

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Abstract

The purpose of the present invention is to provide steel plate manufacturing equipment and a steel plate manufacturing method with which a flat and homogenous steel plate can be manufactured by uniformly cooling a high-temperature steel plate through on-line cooling. Provided is steel plate manufacturing equipment in which: a hot rolling mill, a first shape correction device, and an accelerated cooling device are disposed in this order; the accelerated cooling device is provided with a drainage roll; and the drainage roll restricts a steel plate in the vertical direction and has a control mechanism that controls a pressing load (P) for restricting the steel plate.

Description

technical field [0001] The present invention relates to a steel plate manufacturing facility and a steel plate manufacturing method for obtaining high-quality products by cooling a hot-rolled high-temperature steel sheet on-line, and particularly relates to a steel sheet manufacturing facility and a steel sheet manufacturing method for manufacturing a steel sheet excellent in flatness. Background technique [0002] In recent years, particularly in thick steel plates, controlled rolling in which rolling is carried out in a low temperature range and accelerated cooling in which the rolled steel plate is cooled are carried out on-line. It is that high precision of cooling stop temperature control becomes important. [0003] In general, uneven cooling tends to occur during cooling of a hot-rolled steel sheet due to differences in temperature distribution, shape, or surface state of the steel sheet immediately after rolling. In particular, uneven cooling that occurs in relativel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B21B1/38
CPCB21B1/38B21B45/0218B21B45/0281B21B39/006B21B37/74B21B15/00B21B2015/0071B21B45/02
Inventor 上冈悟史堀江正之田村雄太安达健二
Owner JFE STEEL CORP