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Roll shape structure of roughing mill for rolling H-section steel

A billeting machine, H-beam technology, applied in the direction of rolls, metal rolling, metal rolling, etc., can solve the problems of wear, improper arc design, folding, etc., to improve production quality, increase the amount of excess steel, and eliminate the belly The effect of board folding

Inactive Publication Date: 2013-03-13
LAIWU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, improper arc design or serious wear between the waist and legs will cause grooves and ribs on the surface of the rolled piece, and folds will also be formed after rolling.

Method used

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  • Roll shape structure of roughing mill for rolling H-section steel
  • Roll shape structure of roughing mill for rolling H-section steel
  • Roll shape structure of roughing mill for rolling H-section steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]A factory produces H-shaped steel with a specification of UC305mm×305mm, adopts the X-H rolling method, and the rolling mill is configured as a blanking mill and three reversing continuous rolling mills (UR-E-UF, UR is a universal roughing mill; E is 1 edge mill; UF is a universal finishing mill):

[0035] The blank is a special-shaped blank;

[0036] The pass design of the billet rolling mill is a horizontal rolling pass 8 and a vertical rolling pass 6, see image 3 , and the R angle of the roll of horizontal rolling pass 8 is processed into a sinusoidal shape, that is, the peak value is controlled at 0.1mm (can be controlled by rounding), the sine period is 24.7175, and the initial phase angle is -5.205. The analytical formula is: y=0.0917*sin(0.2542*x-5.205)-0.002.

[0037] The design of the R corner of the hole type is carried out according to the following table 1.

[0038] Table 1 pass design parameters

[0039] x

y / mm

8

0.007

...

Embodiment 2

[0044] A factory produces H-shaped steel with a specification of HN255mm×205mm, adopts the X-H rolling method, and the rolling mill is configured as a blanking mill and three reversible continuous rolling mills (UR-E-UF, UR is a universal roughing mill; E is 1 edge mill; UF is a universal finishing mill):

[0045] The blank is a special-shaped blank;

[0046] The pass design of the billet rolling mill is a horizontal rolling pass 8 and a vertical rolling pass 6, see image 3 , and the R angle of the roll of horizontal rolling pass type 8 is processed into a sinusoidal shape, that is, the peak value is controlled at 0.252mm (can be controlled by rounding), the sinusoidal period is 24.7175, and the initial phase angle is -5.205. The analytical formula is: y=0.251*sin(0.2542*x-5.205)-0.002.

[0047] Table 2 pass design parameters

[0048] x

y / mm

8

0.005

9

-0.058

10

-0.118

11

-0.170

12

-0....

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PUM

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Abstract

The invention provides a roll shape structure of a roughing mill for rolling H-section steel, which is applied to a horizontal rolling groove of a roller of the roughing mill. The section of a collar R angle part of the horizontal rolling pass is in a wave form of a sine curve, a start point (A) is a position where the collar R angle part is tangent to the roller surface of the roller collar, and an end point (B)is a position where the collar R angle part is tangent to the side surface of the roller collar; the analytic formula for the sine curve is y=A*sin(0.2542*x-5.205)-0.002; and an arc from the start point to the end point and corresponding to the R angle part is divided into n sections uniformly, wherein n is a natural number, each section is defined as a node unit, the value range of x covers integrates from 1 to n, y refers to the distance from points on the sine curve to a position corresponding to the R angle when non-sine design is adopted, the direction of x is in the arc length direction of the R angle, the direction of y is the normal direction of a point located at the R-angle part and corresponding to the value of x, and A is a constant.

Description

technical field [0001] The invention relates to a roll profile structure, in particular to a roll profile structure of a horizontal roll of a blanking machine for rolling H-shaped steel, and belongs to the technical field of metal plastic processing and forming. Background technique [0002] As a kind of economical cross-section steel, H-beam has the advantages of large section modulus, strong bending resistance, light unit weight, beautiful appearance, convenient structure, saving man-hours, reducing engineering cost, and can be processed and recycled compared with ordinary I-beams. It has been widely used in beam and column structural components in industrial and civil building steel structures, steel structure load-bearing supports of industrial structures, industrial equipment structures such as petrochemical and electric power, long-span steel bridge components, machinery, vehicles, and ship frame structures. , In engineering structures such as underground railways and ...

Claims

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Application Information

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IPC IPC(8): B21B27/02
Inventor 孙会朝梁栋孙庆亮许荣昌吴允陈学涛尹德全
Owner LAIWU IRON & STEEL GRP