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Corner strengthened unequal thickness corrugated steel plate and manufacturing method

A corrugated steel plate and a manufacturing method technology, applied in sheet/board, building elements, etc., can solve problems such as fibrous cracks, achieve the effect of high structural strength and reduce the probability of forming defects

Active Publication Date: 2016-08-31
ZHEJIANG CTB WAVEFORM STEEL WEB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The corner part of the traditional corrugated steel plate is equal to the thickness of the straight part. During the corner forming process of the steel plate, the corner part of the steel plate shows the stress of external tension and internal compression, especially the external tension area. Thick steel plates cannot achieve ideal plastic deformation, but are prone to forming fibrous cracks

Method used

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  • Corner strengthened unequal thickness corrugated steel plate and manufacturing method
  • Corner strengthened unequal thickness corrugated steel plate and manufacturing method
  • Corner strengthened unequal thickness corrugated steel plate and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A corner strengthened unequal thickness corrugated steel plate, such as Figure 1 to Figure 7 As shown, it includes a straight unit and a corner unit 1, and the thickness of the steel plate at the corner unit 1 is t 1 Less than the thickness t of the original steel plate of the flat unit 0 , t 1 =98.1%t 0 .

[0031] The corner unit 1 is composed of a first straight line segment 11, a first rebound transition arc 12, a corner arc 13, a second rebound transition arc 14, and a second straight line segment 15. The radius R of the corner arc 13 is 7 times the thickness of the steel plate, and the first The radii of the bouncing transition arc 12 and the second bouncing transition arc 14 are gradually changed from infinity to the radius R of the corner arc 13 . The first bounce transition arc 12 includes a bounce arc 121 and a transition arc 122 . The radius of the first bounce transition arc 12, the second bounce transition arc 14 and the first straight line segment 11,...

Embodiment 2

[0039] Corner reinforced unequal thickness corrugated steel plates, such as Figure 1 to Figure 7 As shown, it includes a straight unit and a corner unit 1, and the thickness of the steel plate at the corner unit 1 is t 1 Less than the thickness t of the original steel plate of the flat unit 0 , t 1 =95.1%t 0 .

[0040] The corner unit 1 is composed of a first straight line segment 11, a first rebound transition arc 12, a corner arc 13, a second rebound transition arc 14, and a second straight line segment 15. The radius R of the corner arc 13 is 7 times the thickness of the steel plate, and the first The radii of the bouncing transition arc 12 and the second bouncing transition arc 14 are gradually changed from infinity to the radius R of the corner arc 13 .

[0041] The first bounce transition arc 12 includes a bounce arc 121 and a transition arc 122 . The changing range of the radius of the rebound arc 121 is: 3R→+∞, and the changing range of the radius of the transiti...

Embodiment 3

[0048] Corner reinforced unequal thickness corrugated steel plates, such as Figures 1 to 8 As shown, including the straight unit and the corner unit 1, the thickness of the steel plate at the corner unit 1 is t 1 Less than the thickness t of the original steel plate of the flat unit 0 , 98.5%t 0 ≥t 1 ≥93.2%t 0 .

[0049] The corner unit 1 is composed of a first straight line segment 11, a first rebound transition arc 12, a corner arc 13, a second rebound transition arc 14, and a second straight line segment 15. The radius R of the corner arc 13 is 8 times the thickness of the steel plate, and the first The radii of the bouncing transition arc 12 and the second bouncing transition arc 14 are gradually changed from infinity to the radius R of the corner arc 13 . The radius R of the corner arc 13 is 8 times the thickness of the steel plate. Through the setting of the first rebound transition arc 12 and the second rebound transition arc 14, the intergranular slip at the corn...

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Abstract

The invention relates to a corrugated steel plate and a manufacturing process thereof, and discloses a different-thickness corrugated steel plate with an intensified corner and a manufacturing process thereof. The different-thickness corrugated steel plate comprises a flat and straight unit and a corner unit (1), and the steel plate thickness t1 of the corner unit (1) is smaller than the original steel plate thickness t0 of the flat and straight section, wherein t1 and t0 meet the formula: 99.5%*t0>=t1>=89.5*t0. The manufacturing process comprises the steps that the area of the corner unit (1) is pressed to be thinner, a flat steel plate with a part of area being thinner is placed into a corrugated steel plate die, the die presses downwards, and then the corrugated steel plate is formed. According to the manufacturing process of the corrugated steel plate, the area of the corner unit of a common steel plate is pre-pressed to be thinner, and then the forming of the whole steel plate is conducted, so that the probability of occurrence of forming defects of fibrous cracks of the corner part of the corrugated steel plate in the forming process is reduced, the thickness of the corner part of the prepared steel plate is smaller than the thickness of the flat and straight section of the steel plate, the corner part of the steel plate is more compact relative to the flat and straight area, and the structural strength is higher.

Description

technical field [0001] The invention relates to a corrugated steel plate and a manufacturing method thereof, in particular to a corner-strengthened unequal-thick corrugated steel plate and a manufacturing method thereof. Background technique [0002] During the pressing and bending process of the steel plate, the thicker the steel plate, the greater the probability of defects occurring during corner forming, and the smaller the corner radius of the steel plate, the greater the probability of defects occurring during corner forming. The corner part of the traditional corrugated steel plate is equal to the thickness of the straight part. During the corner forming process of the steel plate, the corner part of the steel plate shows the stress of external tension and internal compression, especially the external tension area. Thick steel plates cannot achieve ideal plastic deformation, but are prone to forming defects such as fibrous cracks. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16S1/06B21D13/02
Inventor 孙天明李勇
Owner ZHEJIANG CTB WAVEFORM STEEL WEB
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