Tension straightening method and device for wide and thick sheet metal straightener

A metal sheet and straightening machine technology, which is applied in the field of metal sheet straightening, can solve the problems of large tension, cannot be given, and cannot meet the tension straightening requirements of wide and thick metal sheets, and achieve the effect of improving the straightening effect

Active Publication Date: 2013-01-23
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Considering that the straightening machine for wide and thick metal plates is generally driven by work rolls, and the diameter of the work rolls is relatively small, so the ...

Method used

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  • Tension straightening method and device for wide and thick sheet metal straightener
  • Tension straightening method and device for wide and thick sheet metal straightener
  • Tension straightening method and device for wide and thick sheet metal straightener

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Embodiment 1

[0053] Please see attached Figure 3-5 , a tension straightening method for wide and thick metal sheet straightening machines, through the tension rollers respectively set at the entrance and exit of the straightening machine, in conjunction with the speed of each straightening roller, the speed difference is used to generate additional tension during the straightening process of the sheet metal, thereby Expand the height of the plastic zone when the plate is bent and deformed, and improve the straightening effect, such as image 3 As shown, the specific steps are as follows: Wherein, a wide and thick steel plate is taken as an example.

[0054] Step 1, determine the relevant parameters of the plate.

[0055] Plate thickness, t=10mm;

[0056] Plate width, B=1000mm;

[0057] Plate yield strength, σ s =400MPa;

[0058] The elastic modulus of the plate, E=210Gpa;

[0059] The distance between the exit pinch roller and the exit of the straightener, L=2000mm;

[0060] Step 2...

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Abstract

The invention relates to a tension straightening method and a tension straightening device for a wide and thick sheet metal straightener. According to the method, tension rollers are respectivelyarranged on an inlet and an outlet of the straightener to match with the rotation speed of each straightening roller, and an additional tension is produced during the processing of sheet straightening by using speed difference, so that the height of a plasticity area is increased when the sheet is bending and deformed, and the straightening effect is improved. The device consists of inlet tension rollers, an inlet guide roller, the straightener and outlet pinch rollers; the inlet guide roller is arranged at the front end of the straightener; the outlet pinch rollers are arranged at the back end of the straightener; and the inlet tension rollers are arranged at the front end of the inlet guide roller. The tension straightening method and the tension straightening device have the advantages that: the additional tension is provided for the sheet during the straightening process, the sheet is easy to extend; under the premise of the same straightener setting, wider sheet defects can be improved, and capacity of the straightener is increased; and with comprehensive consideration of the additional tension and the radius of sheet bending, load of the straightener is reduced, and the straightener is more safe and low in energy consumption.

Description

【Technical field】 [0001] The invention relates to the technical field of metal sheet straightening, in particular to a tension straightening method and device for a wide and thick metal sheet straightening machine. 【Background technique】 [0002] The straightening of wide and thick metal plates generally adopts a multi-roller straightening machine. Taking wide and thick plates made of steel as an example, 5-roll, 7-roll, 9-roll, 11-roll straightening modes can be used, and the 9 / 5-roll straightening mode is the main one. No matter how the straightening is done, it is fundamentally to achieve the purpose of straightening through the repeated bending of the wide and thick plates in the roll gap of the leveler, that is, the metal plate is straight after straightening. It can be seen that the straightening machine achieves the purpose of improving the shape of the plate by eliminating the internal residual stress of the wide and thick plate, rather than improving the shape of t...

Claims

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Application Information

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IPC IPC(8): B21D1/02
Inventor 王英杰王英睿
Owner BAOSHAN IRON & STEEL CO LTD
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