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A double-taper work roll and its roll shape design method

A double-taper work roll and work roll technology, applied in the field of strip rolling, can solve the problems of inability to adapt to the changing range of plate width and large limitations.

Active Publication Date: 2019-11-12
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

Therefore, in the early days, double-tapered rolls (double-tapered work rolls and double-tapered backup rolls) were used to reduce the harmful bending moment of the work rolls, and then control the edge thinning of the strip, but this method has large limitations and cannot adapt to Wide range of plate width variations

Method used

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  • A double-taper work roll and its roll shape design method
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Embodiment Construction

[0077] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0078] The invention provides a double taper work roll and a roll shape design method thereof.

[0079] Such as figure 1 , in the two-dimensional coordinate system in the figure, a double-tapered work roll used for hot-rolled strip edge drop control, the roll shape curve equation of the work roll is:

[0080]

[0081] In the formula, x is the coordinate of the roll body, in mm; y(x) is the roll shape curve equation, in mm.

[0082] see figure 1 According to an embodiment of the present invention, a double-tapered work roll profile design method with hot-rolled strip edge drop control capability includes the following steps:

[0083] Step 1: Determine the quadratic curve y=ax 2 .

[0084] Select the production data of non-oriented silicon steel at...

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Abstract

The invention provides a double-taper working roll and a roll shape design method thereof, and belongs to the technical field of plate and strip rolling. The working roll comprises five curves, namely, a middle portion convexity degree control section, curve transition sections and edge portion contour control sections, and the roll shape curves are symmetrically arranged. The middle portion convexity degree control section and the edge portion control sections are smoothly connected through the curves of the transition sections. Special roll shape curves are adopted for the edge portion curvecontrol sections, and effective control over the shape of the edge portions of hot-rolled strip steel is achieved. The quadratic parabola form is adopted for the middle portion convexity degree control section, and the control requirement for the convexity degree of the strip steel can be met. By means of the roll shape curves and roll shape parameters provided by the method, a double-taper rollshape with the strip steel edge portion contour control capacity can be flexibly designed according to requirements of hot rolling field production.

Description

technical field [0001] The invention relates to the technical field of strip rolling, in particular to a double-taper work roll and a roll shape design method thereof. Background technique [0002] Ultra-flat steel products represented by silicon steel products have relatively strict requirements for cross-sectional profile control due to their use characteristics. The cross-sectional profile control of this type of steel is a research system combining hot rolling and cold rolling processes. A variety of control technologies such as double-tapered work rolls, single-tapered work rolls, EDC cooling technology, EDC work rolls, PC mills, HC mills, T-WRS technology, and ASR technology have been produced. [0003] In the rolling process (hot rolling + cold rolling) of ultra-flat steel, the outstanding shape problems are low crown hit rate (the actual crown is often greater than the set crown), obvious edge thinning and lateral thickness difference hit The rate is low. According...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B27/02B21B37/30
CPCB21B27/021B21B37/30B21B2027/022B21B2267/18
Inventor 刘洋陈斌杨荃王晓晨何海楠孙友昭徐冬肖佳乐李宝鑫
Owner UNIV OF SCI & TECH BEIJING
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