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Method for determining section shape of strip steel

A technology for cross-section shape and strip steel, applied in the field of strip rolling, can solve problems such as small calculation amount, achieve the effect of simple calculation method, flexible calculation method, and avoidance of Runge phenomenon

Active Publication Date: 2018-06-22
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art, provide a method for determining the cross-sectional shape of strip steel, accurately and conveniently build a cross-sectional shape model, conform to the actual cross-sectional shape, and avoid the problem of follow-up calculation distortion. Small size, flexible calculation method, providing accurate reference for shape control to ensure the target shape of strip steel

Method used

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  • Method for determining section shape of strip steel
  • Method for determining section shape of strip steel
  • Method for determining section shape of strip steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Embodiment 1 (convexity inclination value expression method)

[0098] In a specific example of a steel plant, for a batch of raw materials, on-site operators obtain the convexity and inclination values ​​of the raw materials through measurement and estimation. Among them, the convexity is 20 μm: the inclination value is 10 μm, the thickness of the raw material is 2.5 mm, and the width is 1120 mm.

[0099] Using high-level language programming, it can be calculated by substituting the expression formula of convexity and inclination value:

[0100] b 1 =4.80769;

[0101] b 1 = -36.98225;

[0102] b 4 = 0;

[0103] b 6 =0.

Embodiment 2

[0104] Embodiment 2 (measured regression method)

[0105] In addition, in a specific example of a steel plant, the measurement results along the transverse direction using a thickness gauge are shown in Table 1 below, where the width is 1268mm.

[0106] Table 1

[0107]

[0108]

[0109] Using high-level language programming, the calculation result is: b 1 = -28.27893;

[0110] b 1 =-850.94084;

[0111] b 4 =5153.70874;

[0112] b 6 =-8961.23311;

[0113] Thick=4.561.

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Abstract

The invention discloses a method for determining the section shape of strip steel. A section model of the strip steel is established, and the section model of the strip steel includes relations between the thickness and all width points in the profile of the section of the strip steel and the parabola of the profile of the section of the strip steel based on the relations; and characteristic coefficients in the section model of the strip steel are determined by the measured thickness data, so as to determine the profile of the section of the strip steel. The method for determining the sectionshape of the strip steel accurately and conveniently constructs the section shape model and conforms to an actual section shape, at the same time, the distortion of subsequent calculation is avoided,the amount of calculation is small, the calculation method is flexible, and accurate references for plate shape control are provided so as to ensure the target plate shape of the strip steel.

Description

technical field [0001] The invention relates to strip rolling technology, in particular to a strip shape control method. Background technique [0002] The shape of the strip is an important quality index, and the shape includes two aspects of flatness and profile, and the flatness and profile affect each other during the rolling process. The measurement and control of flatness has been widely used in production practice. In comparison, the detection and control of the cross-sectional shape is rare. In order to improve the accuracy of the plate shape, it is a prerequisite to determine the shape of the section. [0003] At present, the commonly used cross-sectional shape representation method is plate convexity, that is, the strip steel cross-sectional shape is considered to be symmetrical along the width center, and a parabola is constructed to represent the strip steel cross-sectional shape through the strip steel thickness and plate convexity. This method ignores the wed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28
CPCB21B37/28
Inventor 王志军
Owner WISDRI ENG & RES INC LTD