Method and device for increasing hot rolling speed of ferrite

A ferrite and rhythmic technology, applied in workpiece cooling devices, metal rolling, metal rolling, etc., can solve problems such as rhythm procrastination, achieve the effect of improving rhythm, increasing process temperature drop, and shortening steel swing time

Active Publication Date: 2017-04-26
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for improving the tempo of ferrite hot rolling, which solves the technical problem of procrastination in the hot rolling process in the prior art due to the structural defects of steel balance and rolling mode

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  • Method and device for increasing hot rolling speed of ferrite

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Embodiment Construction

[0026] The embodiment of the present application provides a method and device for improving the rhythm of ferrite hot rolling, which solves the technical problem of procrastination in the hot rolling process in the prior art due to the structural defects of the balance steel and the rolling mode; The process is time-consuming and increases the rolling rhythm.

[0027] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0028] see figu...

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Abstract

The invention belongs to the technical field of hot rolling processes, and discloses a method for increasing the hot rolling speed of a ferrite. The method comprises the following steps of rolling by adopting a low-tempreature heating method, controlling the tapping temperature to be 1,080-1,180 DEG C, and controlling the time in the furnace to be 170-250 min; conducting rough rolling by adopting a 3+5 rolling mode, forming 3 passes through rolling of a rough mill frame R1, and forming 5 passes through rolling of a rough mill frame R2; executing all-pass scale removal operations by a rough mill R1 and a rough mill R2, putting the rough mill R1 in the first pass and the third pass, and putting the rough mill R2 in the first pass, the second pass, the third pass, the fourth pass and the fifth pass; synchronously conducting steel placing and air cooling in front of a width gauge and the rough mill R1 and on the rough mill R2; and reducing the pass rolling speed of the rough mill R2, and controlling the pass rolling speed of the rough mill R2to be 2.0-2.5 m / s.

Description

technical field [0001] The invention relates to the technical field of hot rolling technology, in particular to a method and a device for improving the tempo of ferrite hot rolling. Background technique [0002] Hot rolling in the ferrite zone or phase transformation controlled rolling is a new rolling process developed in recent years. [0003] The rolling temperature is about 150°C-200°C lower than that of the austenitic rolling process. The finishing rolling temperature of rough rolling and finishing rolling is generally 850-910°C and 760-810°C. For conventional hot rolling production lines, R1 and R2 are two For the discontinuous reversible roughing mill + 7 continuous rolling finishing mill, in order to control the rolling temperature, strategies such as rough rolling 3 + 5 rolling mode and swing steel cooling have to be adopted to meet the process temperature requirements. The rolling rhythm has a great influence on the rolling process, which restricts the improvement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/74B21B37/46B21B45/02B21B45/04
CPCB21B37/46B21B37/74B21B45/0203B21B45/08
Inventor 王建功周旬夏银锋王健黄宾焦建峰赵继武艾矫健王晓东周政毕国喜
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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