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A Reverse Deformation Correction Process of Narrow Section H Steel

A technology of anti-deformation and cross-section, which is applied in the direction of manufacturing tools, metal processing equipment, grinding workpiece supports, etc., can solve the problems of low efficiency, high production cost, time-consuming and labor-intensive, etc., to reduce labor intensity, ensure production and delivery The effect of reducing the demand for goods and reducing production costs

Active Publication Date: 2022-04-05
CHANGJIANG & JINGGONG STEEL STRUCTURE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of time-consuming, labor-intensive, low efficiency, and high production cost in correcting narrow-section H-shaped steel by means of artificial flames in the prior art, the present invention provides a reverse deformation correction process for narrow-section H-shaped steel

Method used

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  • A Reverse Deformation Correction Process of Narrow Section H Steel
  • A Reverse Deformation Correction Process of Narrow Section H Steel
  • A Reverse Deformation Correction Process of Narrow Section H Steel

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Experimental program
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Embodiment 1

[0044] In the anti-deformation correction process of the narrow-section H-steel in this embodiment, the narrow-section H-steel can be defined as an H-shaped steel with a section ≤ H300*300. The anti-deformation correction process of narrow-section H steel can use the principle of thermal expansion and contraction at the weld position, so that the pre-made anti-deformation at the flange plate can be naturally corrected and recovered, and one positive and one negative will be naturally offset to realize the narrow section H. Calibration process of section steel.

[0045] Please combine Figures 1 to 7 , the anti-deformation correction process of narrow section H steel includes the following steps:

[0046] 1) Steel rust removal: According to the corrosion, pitting or scratch defects on the steel surface, when the depth is less than or equal to 1 / 2 of the negative deviation value of the steel thickness, the steel is directly used; when the depth is greater than the thickness of ...

Embodiment 2

[0059] Please combine Figure 8 to Figure 10 , this embodiment 2 provides a rust removal equipment, which is used for derusting treatment in step 1) of the anti-deformation correction process of the above-mentioned narrow-section H steel. The derusting equipment includes a shell 1, which is separated by a vertical partition 2 to form a cavity 1 (not marked) and a cavity 2 (not marked), and the cavity 1 is used to fix the steel to be derusted (not marked) bearing frame 3. A derusting mechanism is provided above the carrier frame 3 . The surface of the steel to be derusted fixed on the carrier 3 can be derusted by the derusting mechanism. In this embodiment, a door (not shown) for closing the first cavity is installed on the outer side of the housing 1 .

[0060] The derusting mechanism includes a raceway-shaped ring body 8, and both ends of the raceway-shaped ring body 8 are fixed with limit rods 11, and the other ends of the two limit rods 11 are connected to the correspond...

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Abstract

The invention relates to the field of construction technology, and discloses an anti-deformation correction process for narrow-section H steel, which includes the steps of steel rust removal, steel blanking, T-shaped assembly, T-shaped gate welding, anti-deformation treatment and the like. The anti-deformation treatment is to pre-press the second flange plate with a straightening machine, so that the two ends of the flange plate two are bent in the same direction to form a certain distance from the original plate surface. The bending direction of the two ends of the flange plate is a direction away from one side of the web plate. The T-shaped member in the narrow-section H-shaped steel and the single flange plate are subjected to pre-compression and anti-deformation treatment before assembly and welding, so that the flange plate of the H-shaped steel after assembly and welding will expand due to thermal expansion and contraction at the weld. The natural correction is retracted to offset the anti-deformation, so as to achieve the correction effect on the narrow section H-beam, which not only reduces the labor intensity of people, but also improves the correction efficiency and reduces the production cost, so as to ensure the production and delivery of H-beam. .

Description

technical field [0001] The invention relates to the field of construction technology, in particular to an anti-deformation correction process for narrow-section H steel. Background technique [0002] H-shaped steel is an economical cross-section high-efficiency profile with more optimized cross-sectional area distribution and a more reasonable strength-to-weight ratio. It is named because its cross-section is the same as the English letter "H". Since all parts of the H-shaped steel are arranged at right angles, the H-shaped steel has the advantages of strong bending resistance in all directions, simple construction, cost saving and light structural weight, and has been widely used. [0003] According to the welding characteristics of H-shaped steel, when the H-shaped steel is welded in the door assembly, the flange plate will shrink due to the shrinkage of the main weld seam after welding, which will cause the arc bending inward deformation of the flange plate. Therefore, u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B21D3/00B24B27/033B24B47/12B24B47/16B24B55/06B24B41/06B23K9/00B23K9/18B23K9/235
CPCB23P15/00B21D3/00B24B27/033B24B47/12B24B47/16B24B55/06B24B41/06B23K9/0026B23K9/18B23K9/235
Inventor 张泉谷童林浪贾宝华张飞王本亮
Owner CHANGJIANG & JINGGONG STEEL STRUCTURE GRP CO LTD
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