Preprocessing method and preprocessing device for steel plate trimming

A cutting device and edge trimming technology, which is applied in the direction of shearing devices, shearing machine accessories, metal processing equipment, etc., can solve the problem of metal loss, the difficulty of accurately controlling the shear width value, and affecting the steel yield of the production line, etc. problem, achieve the effect of reducing shear load, improving effect and production capacity

Active Publication Date: 2012-08-01
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 2) It is difficult to accurately control the shear width value: Due to the special structural form and shear characteristics of the disc shear, it is difficult to accurately control the sh

Method used

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  • Preprocessing method and preprocessing device for steel plate trimming
  • Preprocessing method and preprocessing device for steel plate trimming
  • Preprocessing method and preprocessing device for steel plate trimming

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Embodiment Construction

[0027] see figure 1 , a pretreatment device for trimming strips of the present invention, which includes at least two groups of cutting devices 1, 1 ', which are respectively arranged on both sides of the strip 10, corresponding to both sides of the strip; several bending roller groups 2 . The group (take the bending roller group 2 as an example) is composed of two upper and lower rollers 21, 22, each arranged on the upper and lower sides of the strip 10; the upper and lower rollers 21, 22 have different inclinations of tapered sections or sector sections , that is, the upper roll 21 of a roll group is a tapered section, and the lower roll 22 of the roll set is a fan-shaped section, which is matched in pairs; two pairs of flat rolls 6, 6' are respectively arranged on both sides of the strip steel 10, along the The running direction of the steel strip 10 is behind the bending roller group 5 .

[0028] Further, along the running direction of the strip, the farther the bending ...

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Abstract

A preprocessing method and a preprocessing device for strip steel trimming are provided. A sequential multi-step gradual bending method is adopted, a bending angle is gradually increased, and the connection strength between the edge portion of strip steel and a base plate is gradually reduced. After the bent edge portion of the steel plate is straightened, the crack effects of the connection area of the edge portion are obvious, and accordingly the edge portion further enters a circle shear, the shearing processing becomes easy. The preprocessing method and the preprocessing device for the steel plate trimming can remarkably improve pre-processing process and equipment for trimming of the circle shear on an existing plate strip rolling production line, series connection of a laser shearing technology and a multi-step bending technology is adopted, large amount of shearing is shared for the circle shear, the processed steel plate enters the circle shear to finish the final shearing, a typical multi-step shearing method is formed to meet the adjustment requirements of an shear object for multi-thickness specifications, varieties of mechanical strength and varieties of shear speed and achieve the combination of high-speed shearing and good shearing quality.

Description

technical field [0001] The invention belongs to the technical field of fixed-width shearing of cold steel plates, adopts a multi-step bending method in motion, so that the edge of the steel plate entering the disc shears already has a significant cutting condition, thereby significantly improving the cutting performance of the disc shears. The shearing effect of the shears, and to ensure that the edge quality of the strip after cutting is intact, this pretreatment technology can significantly improve the shearing stability and shearing service period of the disc shears, thereby effectively improving the shearing speed and the post-cutting Edge quality is an invention related to edge shearing of cold steel plates. Background technique [0002] Fixed-width disc shears (also known as trimming shears) are important equipment used in continuous rolling or semi-continuous rolling production lines. The appearance and size specifications meet the width requirements of the product. ...

Claims

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Application Information

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IPC IPC(8): B23D33/00B23P17/00
Inventor 段明南王英杰李山青羌菊兴
Owner BAOSHAN IRON & STEEL CO LTD
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