Acid continuous rolling mill roll profile configuration structure and acid continuous rolling unit
A configuration structure, acid continuous rolling technology, applied in the direction of metal rolling mill stands, rolls, metal rolling racks, etc., can solve the problems of low control accuracy, lack of strip transverse thickness, increased scrap rate, etc.
Active Publication Date: 2020-09-08
SHOUGANG JINGTANG IRON & STEEL CO LTD
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Problems solved by technology
For the CVC acid tandem mill, the existing technology lacks a method for controlling the transverse thickness of the strip, and can only control the transverse thickness of the strip by first increasing the width of the strip and then trimming twice
And adopting above-mentioned method not only has increased reject rate, and control precision is low
Method used
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specific Embodiment
[0052] A 2230 acid tandem rolling unit is used to produce steel grade SLZW+Z steel grade. The thickness of the hot-rolled raw material is 3.5mm, the thickness of the acid tandem rolling product is 0.6mm, and the strip width is 1583mm. The roll shape of each roll in the roll configuration structure of the acid tandem mill is as follows:
[0053] For the support roll 11, the curve of its second CVC roll type 111 is:
[0054] L(x)=732.5+(-4.38E-4)*x+6.73E-7*x 2 +(-2.5E-10)*x 3
[0055] For the intermediate roll 12, the roll profile curve is:
[0056] First CVC roll type 121 part:
[0057] L(x)=732.5+(-4.38E-4)*x+6.73E-7*x 2 +(-2.5E-10)*x 3
[0058] Cylindrical Roll Type 122 Part: L m =70mm, depth d m =2mm, the radius R of the transition arc 123 d =1000mm
[0059] For the work roll 13, the roll profile curve is:
[0060] The basic roll type of the work roll 13 is a sinusoidal positive crown roll type 131 of sin70, and the crown value in the radial direction is C w =75...
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Abstract
The invention relates to the technical field of cold continuous rolling, in particular to an acid continuous rolling mill roll profile configuration structure and an acid continuous rolling unit. Theacid continuous rolling mill roll profile configuration structure comprises a supporting roll, a middle roll and a working roll which are arranged in sequence; the middle roll is in a first CVC roll profile, and the small end side of the middle roll is ground to form a cylindrical roll profile; the supporting roll is of a second CVC roll profile, and the roll profile direction of the supporting roll is opposite to that of the middle roll; and the working roll is in a positive convexity roll profile, the side, different from the small end side, of the working roll is ground to form a target convexity roll profile, the roll profile convexity value of the target convexity roll profile is larger than that of the positive convexity roll profile, the length of the target convexity roll profile is Ln, and the range of Ln meets the following conditions that Ln is larger than (L-B) / 2 and less than or equal to L / 2, wherein B is the width of strip steel. According to the structure and the unit, the accuracy of controlling the transverse thickness of the strip steel is improved.
Description
technical field [0001] The invention relates to the technical field of continuous cold rolling, in particular to a roll configuration structure of a continuous acid rolling mill and a continuous acid rolling unit. Background technique [0002] The transverse thickness accuracy is one of the important indicators to measure the quality of the strip steel, which directly affects the yield rate of the production line, the quality pass rate and the customer's use cost. For the CVC acid tandem mill, the prior art lacks a method for controlling the transverse thickness of the strip, and the transverse thickness of the strip can only be controlled by first increasing the width of the strip and then trimming twice. And adopting above-mentioned method has not only increased reject rate, and control precision is low. Contents of the invention [0003] In view of the above problems, the present invention is proposed in order to provide a continuous acid rolling mill roll configuratio...
Claims
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IPC IPC(8): B21B13/02
CPCB21B13/02B21B2013/021B21B2267/18
Inventor 任新意高慧敏徐海卫王晓东王松涛郑艳坤张潮秦涛李中伟车鸿奎周鹏飞贾杰韩志刚
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD