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Straightening process for wedge-shaped plate

A wedge-shaped plate and straightening technology, applied in the field of plate straightening, can solve problems such as unreasonable

Active Publication Date: 2017-02-15
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current straightening machine is mainly aimed at plates with constant thickness. Famous metallurgical equipment manufacturers in the world have launched "third-generation straightening machines". Expand the straightening range, but the straightening roller is fixed during the straightening process, and the roll distance and reduction are unchanged. According to the theoretical formula, an important parameter to determine the roll distance is the thickness of the plate, and for the wedge plate, Its thickness is a variable during straightening. It is obviously unreasonable to use the existing straightening machine for straightening. It is necessary to adjust the reduction of the straightening roller on-line

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the present invention is a straightening process for wedge-shaped plates. The straightening roller system adopts 13 rollers, and the settings of each roller distance are not equal. There is a difference in roller distance, and the roller distance is set from large to small. , in descending order (t i -t i+1 =Δt,k i -k i+1 =Δt / 2), which can reduce the pressure of each roller on the entrance side, and at the same time pursue the ideal state of equal strength design. The straightening rollers of the traditional strip straightening machine cannot be adjusted on-line during the straightening process, but the straightening roller system designed by the present invention can realize the on-line reduction adjustment during the straightening process. In the present invention, the wedge-shaped plate is used as a variable-thickness plate, an...

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Abstract

The invention discloses a straightening process for a wedge-shaped plate. A 13-roller straightener is adopted. The roller spaces of a straightening roller system are arranged from large to small in a progressive decreasing mode. Four front rollers and four rear rollers of the straightening roller system are rising-falling straightening rollers. The straightening process comprises the specific steps that (1) the wedge-shaped plate serves as a variable thickness plate, and according to the parameters of the wedge-shaped plate, the roller space ti and rolling reduction hi corresponding to different plate thicknesses are calculated; (2) according to the parameters of the wedge-shaped plate, the wedge-shaped plate is subjected to plate thickness zoning; and (3) according to plate thickness zoning, different plate segments are straightened through roller sets, during straightening, the thin plate zone enters the straightener first, the four front rollers and the four rear rollers of the straightening roller system enters or leaves work according to the change of the plate thickness of the wedge-shaped plate during straightening, and thus the roller space is adjusted according to the change of the plate thickness until straightening is finished. Through the straightening process, the problem that straightening rollers of a traditional plate belt straightener cannot be adjusted on line under pressure during straightening is solved, thus rolling reduction and the roller spaces cam meet straightening process parameter requirements of the wedge-shaped plate, and the wedge-shaped plate with acceptable quality is obtained through straightening.

Description

technical field [0001] The invention relates to the field of plate straightening, in particular to a straightening process for wedge-shaped plates. Background technique [0002] Wedge plates are mainly used for weight reduction of structures such as shipbuilding, bridges, and buildings. The demand for wedge plates continues to grow worldwide, but the straightening problem is still a technical problem. The current straightening machine is mainly aimed at plates with constant thickness. Famous metallurgical equipment manufacturers in the world have launched "third-generation straightening machines". Expand the straightening range, but the straightening roller is fixed during the straightening process, and the roll distance and reduction are unchanged. According to the theoretical formula, an important parameter to determine the roll distance is the thickness of the plate, and for the wedge plate, Its thickness is variable during straightening, and it is obviously unreasonable...

Claims

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Application Information

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IPC IPC(8): B21D1/02
CPCB21D1/02
Inventor 孙建亮杜兴明李凯李硕
Owner YANSHAN UNIV
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