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A control method for edge warping of thickness profile of low-silicon non-oriented silicon steel

A technology of oriented silicon steel and a control method, which is applied in the direction of rolling mill control device, metal rolling, manufacturing tools, etc., can solve the problems of low-silicon non-oriented silicon steel thickness profile edge warping and other problems, and achieve the effect of solving edge warping

Active Publication Date: 2015-11-18
SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for controlling the warping of the edge of the thickness profile of low-silicon non-oriented silicon steel, which solves the technical problem of the warping of the edge of the thickness profile of low-silicon non-oriented silicon steel in the prior art

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  • A control method for edge warping of thickness profile of low-silicon non-oriented silicon steel
  • A control method for edge warping of thickness profile of low-silicon non-oriented silicon steel

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Embodiment 2

[0023] The embodiment of the present invention provides a method for controlling the back warping of the thickness profile edge of low-silicon non-oriented silicon steel

[0024] The main method is to carry out low-silicon non-oriented silicon steel S60 rolling on a 1580mm hot rolling production line, and plan to roll 40 slabs. The specific method includes the following steps:

[0025] Step 201: Enter the finishing mill through the roller table, set an edge heater at the finish rolling entrance, turn on the edge heater at the finish rolling entrance, and the edge heater heats the continuous casting slab. The power of the edge heater is 3000KW, and the edge heater The heating width of the top heater is 100mm, so that the temperature difference between the edge and the middle of the intermediate billet at the finish rolling entrance is controlled at 23 °C;

[0026] Step 202: Then adjust the roll shifting value and roll bending range of the finishing mill. Since a smaller crown w...

Embodiment 3

[0033] The embodiment of the present invention provides a method for controlling the inverse warping of the thickness profile edge of low-silicon non-oriented silicon steel, which is mainly to carry out low-silicon non-oriented silicon steel S60 rolling on a 1580mm hot rolling production line, and plan to roll 40 slabs. The specific method It includes the following steps:

[0034] Step 301 : Enter the finishing mill through the roller table, set an edge heater at the entrance of finishing rolling, turn on the edge heater at the entrance of finishing rolling, and heat the continuous casting slab by the edge heater. The power of the edge heater is 2500KW, and the edge heater The heating width of the top heater is 100mm, so that the temperature difference between the edge and the middle of the intermediate billet at the finish rolling entrance is controlled at 10 °C;

[0035] Step 302: Then adjust the roll shifting value and the roll bending range of the finishing mill. Since a s...

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Abstract

The invention discloses a control method for side reverse tilting on the thickness profile of low-silicon non-oriented silicon steel, and belongs to the field of thickness profile control of hot-rolled band steel. The control method comprises the following steps: feeding a continuous casting into a finishing mill via a roller way; arranging a side heater at a finish milling inlet to heat the continuous casting in order to keep the temperature difference between the side part and the middle part of a middle blank at the finish milling inlet at 10-30 DEG C; adjusting the roll channeling value and roll bending range of the finishing mill till the convexity of band steel at a finish milling outlet is 30-40 mum. According to the control method, the temperature difference between the middle part and side part of the middle blank and the convexity of the band steel are controlled, and distribution of finish milling load is adjusted, so that the problem of side reverse tilting on the thickness profile of the low-silicon non-oriented silicon steel is solved completely.

Description

technical field [0001] The invention belongs to the field of thickness profile control of hot-rolled strip steel, and in particular relates to a control method for the edge warping of the thickness profile of low-silicon non-oriented silicon steel. Background technique [0002] The transverse thickness of the cold-rolled silicon steel sheet is required to be controlled below 10 μm, and the research shows that the shape quality of the cold-rolled steel sheet is directly inherited from the hot rolling process. Cold-rolled silicon steel has a relatively single width and cross-section, and the special characteristics of the same-width unit arrangement rolling, low rolling temperature and hard material make it difficult to control the cross-section shape of hot-rolled strip. After some strip steels are rolled and annealed in the cold rolling process, due to the release of stress at local high points, regularly arranged striae defects are formed along the length of the strip, that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/24
Inventor 安冬洋李彬余威李金保徐伟王秋娜马铮
Owner SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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