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Evaluation method for hot-rolled strip steel edge plate profile

A hot-rolled strip and edge technology, which is applied in the field of steel rolling, can solve problems such as raised defects, lack of quantitative evaluation methods, and bulging of steel coils in cold-rolled production lines.

Pending Publication Date: 2021-02-02
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides an evaluation method for the edge profile of hot-rolled strip steel, which solves the lack of quantitative evaluation methods for the quality of the edge profile of hot-rolled strip steel, and thus cannot be improved by early intervention of cold-rolling process parameters. The impact of the plate profile on the quality of the rolled plate leads to the technical problems of frequent occurrence of bulging and bulging defects in the downstream cold rolling production line

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  • Evaluation method for hot-rolled strip steel edge plate profile
  • Evaluation method for hot-rolled strip steel edge plate profile
  • Evaluation method for hot-rolled strip steel edge plate profile

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Embodiment 1

[0041]Such asfigure 1 As shown, this embodiment provides a method for evaluating the edge profile of hot rolled steel strip, which is used to evaluate the profile of the edge region of the hot rolled steel strip, that is, the profile of the edge region of the hot rolled steel strip. The part area refers to the position on the hot-rolled steel strip at a preset distance from the edge of the hot-rolled steel strip and the area between the edge of the hot-rolled steel strip.

[0042]The method includes:

[0043]Step S101: Acquire the profile data of M position points on the edge area in sequence along the width direction based on the first preset spacing, the profile data includes the thickness value of the hot-rolled strip at the location and the location at the hot-rolled strip The width value on the steel, the width value refers to the distance between the position point and the edge of the hot rolled strip in the width direction, M is a positive integer;

[0044]Specifically, if the left si...

Embodiment 2

[0069]Such asFigure 4 As shown, this embodiment provides an evaluation method for the edge profile of hot-rolled steel strip, which is used to evaluate the profile of the edge region of the hot-rolled steel strip. The area between the preset position of the strip edge and the hot rolled strip edge.

[0070]The evaluation method provided in this embodiment can still evaluate the left side area and the right side area separately, or evaluate the left side area and the right side area at the same time. The involved parts will not be repeated, and those skilled in the art can understand the relevant content of this embodiment with reference to the content of the first embodiment.

[0071]Since there is a big difference between the edge region of the hot-rolled steel strip at the extreme edge and the position close to the middle, in this embodiment, the edge region of the hot-rolled steel strip is bounded by the inflection point, and the region is divided into edge drop Zone and edge transitio...

Embodiment 3

[0096]Such asFigure 8 As shown, this embodiment provides an evaluation method for the edge profile of hot-rolled steel strip, which is used to evaluate the profile of the edge region of the hot-rolled steel strip. The area between the preset position of the strip edge and the hot rolled strip edge.

[0097]The evaluation method provided in this embodiment can still evaluate the left side area and the right side area separately, or evaluate the left side area and the right side area at the same time. The parts involved in the second embodiment will not be repeated. Those skilled in the art can understand the related content of this embodiment by referring to the content of the first embodiment and the second embodiment.

[0098]Methods include:

[0099]Step S301: Obtain the profile data of M position points on the edge area in sequence along the width direction based on the first preset spacing, the profile data includes the thickness value of the hot-rolled strip at the position and the posi...

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Abstract

The invention discloses an evaluation method for a hot-rolled strip steel edge plate profile. The method is used for evaluating the plate profile of an edge area of hot-rolled strip steel. The methodcomprises the following steps: sequentially acquiring plate profile data of M position points on the edge area along the width direction based on a first preset interval; performing fitting based on the plate profile data of the N position points, close to the edge of the hot-rolled strip steel, in the plate profile data of the M position points so as to obtain a strip steel edge drop fitting straight line; and based on the slope of the strip steel edge drop fitting straight line and a first preset slope threshold value, judging whether the plate profile of the edge area is qualified or not. The method solves the technical problems that: at present, a quantitative evaluation method for the edge plate profile quality of the hot-rolled strip steel is lacked, then the influence of the plate profile on the rolled plate shape quality cannot be improved through advanced intervention of cold rolling process parameters, and consequently steel coil bulging and bulging defects of a downstream cold rolling production line frequently occur.

Description

Technical field[0001]The invention relates to the technical field of steel rolling, in particular to a method for evaluating the edge profile of hot rolled strip steel.Background technique[0002]With the increasingly stringent requirements for the quality of strip products by users of automotive and household appliance panels, various steel mills have put forward higher requirements for the quality of strip shape, and the quality of strip shape has become a key indicator for evaluating the overall quality of products.[0003]In practice, it is found that the quality of the edge profile of the hot-rolled strip is an important technical indicator to measure the quality of the strip shape. On the one hand, the edge profile quality of hot-rolled strip steel affects the uniformity of strip thickness distribution, which reduces the accuracy of strip thickness. For products delivered in hot coils, it affects users’ quality evaluation of the product; on the other hand, strip steel The quality ...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06Q50/04
CPCG06F30/20G06Q10/06393G06Q10/06395G06Q50/04Y02P90/30
Inventor 林海海李洋龙陈飞韩学伟张爱斌李旭东文杰王凤琴于孟吴耐孔凡庆杨华张晓琳李宫胤王永强刘子英
Owner SHOUGANG CORPORATION