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Hot rolling strip steel endless rolling intermediate billet connection device and method

A technology of endless rolling and hot-rolling strip steel, which is applied in the field of steel rolling, can solve the problems that the connection effect is greatly affected by chemical components, high equipment investment and maintenance costs, and takes up a large space, so as to save investment in walking equipment and maintenance costs, flexible welding methods, and reduced floor space

Pending Publication Date: 2019-12-13
CISDI ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this connection method is a physical connection that applies pressure to the shear surface. The connection effect is greatly affected by the chemical composition of the connection material. When the content of carbon or other alloy elements in the connection material is high, the connection strength is affected. Therefore, at present It can only be used for the connection of low-carbon steel or low-alloy steel; at the same time, due to the extreme pressure required for physical connection, the equipment is bulky, with a length of about 17m, occupying a large space, high equipment investment and maintenance costs
[0008] In short, besides the narrow application range of the existing intermediate billet connection method, which limits the types of products to be produced, the main problem is that the connection mechanism needs to be welded by walking, which occupies a large space on the production line. For the existing production line with fixed space, Undoubtedly the biggest obstacle

Method used

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  • Hot rolling strip steel endless rolling intermediate billet connection device and method
  • Hot rolling strip steel endless rolling intermediate billet connection device and method
  • Hot rolling strip steel endless rolling intermediate billet connection device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 , figure 2 As shown, the present embodiment provides a connecting device for endless rolling of hot-rolled steel strips. After the rough rolling mill 8, between the hot coil box 9 and the finish rolling mill 15, a straightener 10 and a shearing machine 11 are arranged. , clamping device 12 and joining machine 13 and deburring machine 14.

[0043] The straightening machine 10 can straighten the head and tail parts of the first intermediate blank 2 and the second intermediate blank 1 . The shearing machine 11 can cut the head and tail shapes of the first intermediate blank 2 and the second intermediate blank 1 , and cut them into matching hypotenuse shapes. The joining machine 13 connects the first intermediate blank 2 and the head-to-tail hypotenuse joint portion 3 of the second intermediate blank 1 . After the connection is completed, the deburring machine 14 removes the redundant parts produced by the joint part 3, and then enters the finish rollin...

Embodiment 2

[0052] The difference between this embodiment and Embodiment 1 is that in this embodiment, multiple welding heads 5 are used to weld the joint portion 3 . A specific solution of two welding heads 5 is given here, and multiple welding heads 5 can also be used to achieve similar functions under different implementation conditions.

[0053] Such as Image 6 as shown, Image 6 Along the width direction of the intermediate blank, the joining machine 13 is provided with 2 welding heads 5, and the two welding heads 5 are arranged at equal intervals along the connection track, the arrangement distance is 0.5L, and the stroke of each welding head 5 is greater than that of the adjacent two Spacing between solder joints 5. When the joint part 3 of the first intermediate blank 2 and the second intermediate blank 1 passes through the joining machine 13, the two welding heads 5 start welding at the same time, at a speed V 2 Moving to the Y direction, the stroke of the welding head 5 is g...

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Abstract

The invention belongs to the technical field of steel rolling, and relates to a hot rolling strip steel endless rolling intermediate billet connection device and method. A straightener straightens theheads and the tails of intermediate billets into flat end faces, a shearing machine is used for cutting the heads and the tails of the two intermediate billets into certain beveled edges, end alignment is achieved, and then a connecting machine is used for connecting the intermediate billets; and a body of the connecting machine is fixed, a welding head and the intermediate billets move at different speeds and in different directions, a formed connection trajectory coincides with a trajectory of a combining part of the beveled edges at the ends of the intermediate billets, and therefore connection is achieved. By means of the device and method, the equipment is simple, the floor area is small, the connection strength is high, the connection range is wide, the problem of space limitation during connecting of the intermediate billets is solved, connection of intermediate billets under the condition of the limited space in conventional production lines is achieved, and the device and method are suitable for connection of billets made of different materials.

Description

technical field [0001] The invention belongs to the technical field of iron and steel rolling, and relates to a connecting device and method for a hot-rolled strip steel endless rolling intermediate billet. Background technique [0002] Endless rolling of hot-rolled strip refers to the process of rolling the billet in the finish rolling stage without splitting the billet into pieces, one-time strip threading, and continuous finish rolling. The rolled strip is cut into coils of required weight by high-speed flying shears. Compared with conventional hot-rolled single-block rolling, endless rolling has the following significant advantages: Eliminate unstable parts in the strip rolling process, stabilize quality, and increase yield; realize ultra-thin and wide-thin products Production; when rolling thin strips, the production is stable and the productivity is improved; the strip tension between the racks is kept stable, so that the thickness and flatness deviation of the strip i...

Claims

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Application Information

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IPC IPC(8): B21B15/00
CPCB21B15/0085
Inventor 王万慧韩会全周民
Owner CISDI ENG CO LTD