Method for straightening steel plate

A steel plate and straightening technology, which is applied in the field of improving the quality of steel plates, can solve problems such as poor straightening effect, crushed steel plates, and high waste rate, and achieve the effect of improving the pass rate and improving efficiency

Inactive Publication Date: 2010-06-16
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original straightening method is inefficient, and the pad iron is directly pressed on the steel plate,

Method used

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  • Method for straightening steel plate
  • Method for straightening steel plate
  • Method for straightening steel plate

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example one

[0019] Horizontal buckling straightening method:

[0020] The steel plate is squeezed and straightened by using jack pressure straightening as the pressure source. The specific steps of the method are as follows:

[0021] ①Before straightening, according to the deformation state and degree of the steel plate, place two shim 3 and arc shim 2 on the straightening platform at appropriate positions, and place the steel plate on the straightening platform through the roller table;

[0022] ② According to the actual deformation of the steel plate, select the position where the steel plate is first compressed, and place an arc-shaped gasket on the upper surface of the steel plate, and place a shim in the upper end of the arc-shaped gasket;

[0023] ③Start the jack pressure correction, the pressure head presses down the squeeze shim, the pressure is transmitted to the arc-shaped gasket to squeeze the deformed part of the steel plate;

[0024] ④ Constantly adjust the pressure...

Example Embodiment

[0030] Example two

[0031] Method of straightening in length direction:

[0032] Such as Figure 5 As shown, one shim 3 and arc shim 2 are placed on the head of the steel plate 1 in the longitudinal direction, and the other shim 3 and arc shim 2 move a certain distance along the length. At the highest point between the arc shim 2, gradually move the shim 3 and the arc shim 2 under the steel plate 1 along the length of the steel plate 1. After each movement, use the indenter to pass the shim 3 and the arc shim 2 Squeeze the highest point of steel plate 1 until straightening is completed.

[0033] The thickness of the lower gasket is 10mm, the position of the gasket is shown in the parameter table (straightening from east to west)

[0034] Steel plate thickness

[0035] Steel plate thickness

Example Embodiment

[0036] Example three

[0037] Straightening method of bridge steel plate:

[0038] 1. Such as Image 6 As shown, a flat steel plate 1 is first placed on the thousand-ton pressure leveling roller table, and then the head of the bridge-shaped steel plate 1 is placed 1 meter from the tail of the flat steel plate, and the flat steel plate moves forward on the roller table, thereby removing the bridge-shaped steel plate 1 Bring into the straightening platform.

[0039] 2. Use the indenter to squeeze into the highest point of the steel plate 1 of the straightening platform, and then use this as the starting point to straighten the steel plate every 200mm to the steel plate head, and then start from the starting point to the steel plate Straighten the tail direction every 200mm until the tail of the board.

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Abstract

The invention relates to a method for straightening a steel plate. A jack pressure straightener serving as a pressure source is adopted to perform extrusion and straightening on the steel plate; before straightening, two sizing blocks are arranged at proper positions under the steel plate, a cambered washer is fastened on each sizing block, the cambered washer is put on the steel plate, and the sizing block is arranged in a recess at the upper end of the cambered washer; and the jack pressure straightener is started, a pressure head presses downwards and extrudes the sizing block, and the pressure is transmitted to the cambered washer so as to extrude a deformed part of the steel plate. The method has the advantages of convenient use and good straightening effect, and effectively improves the efficiency and the quality of straightening the steel plate.

Description

technical field [0001] The invention relates to a method for improving the quality of steel plates, in particular to a method for straightening steel plates. Background technique [0002] With the development of society, the quality requirements of hot-rolled flat plates in the iron and steel field are getting higher and higher. Among them, the proportion of steel plates produced by TMCP process is gradually increasing, and many of their plate shapes do not meet the national standard and need to be straightened before delivery. The original straightening method is inefficient, and the shim iron is directly pressed on the steel plate, which is easy to crush the steel plate, and the straightening effect is poor, resulting in a high waste rate. Contents of the invention [0003] The invention overcomes the deficiencies in the prior art and provides a method for straightening steel plates which is easy to use and has good straightening effect. [0004] In order to solve the a...

Claims

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Application Information

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IPC IPC(8): B21D1/00
Inventor 周洪庆迟铭张朝锋
Owner ANGANG STEEL CO LTD
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