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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, which is easy to crush the steel plate, and the straightening effect is poor, resulting in a high scrap rate

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

Embodiment 1

[0019] Straightening method of lateral ladle curvature:

[0020] Use jack pressure as the pressure source to squeeze and straighten the steel plate. The specific steps of the method are:

[0021] ① Before straightening, according to the deformation state and degree of deformation of the steel plate, place two pad irons 3 and arc spacers 2 at appropriate positions on the straightening platform, 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, place an arc-shaped gasket at this position on the upper surface of the steel plate, and place a pad iron in the depression at the upper end of the arc-shaped gasket;

[0023] ③Start the jack pressure leveler, press the pressure head down to squeeze the pad iron, and the pressure is transmitted to the arc-shaped gasket to squeeze the deformed part of the steel plate;

[0024] ④C...

Embodiment 2

[0031] Straightening method for ladle curvature in the length direction:

[0032] Such as Figure 5 As shown, place a parallel iron 3 and an arc-shaped gasket 2 on the head of the steel plate 1 in the longitudinal direction, and move another parallel iron 3 and an arc-shaped gasket 2 along the length direction for a certain distance, and the pressure head squeezes the steel plate 1 on both sides. At the highest point between the arc-shaped spacers 2, gradually move the pad iron 3 and the arc-shaped spacer 2 under the steel plate 1 along the length direction of the steel plate 1. After each movement, use the pressure head to pass through the spacer 3 and the arc-shaped spacer 2 Squeeze the highest point of the steel plate 1 until the straightening is complete.

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

[0034] Steel plate thickness

[0035] Steel plate...

Embodiment 3

[0037] Straightening method of bridge steel plate:

[0038] 1. If Figure 6 As shown, a flat steel plate 1 is first placed on the 1,000-ton pressure straightening roller table, and then the head of the bridge-shaped steel plate 1 is placed on the tail of the flat steel plate 1 meter away, and the flat steel plate moves forward on the roller table, so that the bridge-shaped steel plate 1 Bring in the straightening platform.

[0039] 2. Use the pressure head to squeeze the highest point of the steel plate 1 entering the straightening platform, and then use this as the starting point to straighten every 200mm towards the head of the steel plate until the head of the steel plate, and then start from the starting point and move toward the steel plate Straighten every 200mm in the direction of the tail 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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