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Welding process for steel structural member with thin bottom plate

A welding process and steel structure technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of the correction process can only be based on experience, the adjustment and correction workload is large, and the effect is unsatisfactory.

Active Publication Date: 2016-03-23
常州齐丰机械电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing method of the above-mentioned steel structure parts is to complete the assembly welding of the vertical sides and reinforcing ribs on the three sides, and then spot-weld the vertical side group, the bottom plate, and the reinforcing ribs to form an assembly, and then perform full welding on the assembly to complete Due to the welding stress of the welded steel structure, the uneven deformation of the thin bottom plate is obvious, and the flame correction process is required to correct the thin bottom plate. However, due to the obvious deformation, the correction process can only be based on experience, resulting in a large amount of adjustment and correction work. The area has to be baked and corrected many times, resulting in pits and pits on the surface of the bottom plate, and the appearance is very unsightly. Although it took a lot of manpower and material resources to correct the bottom plate, the effect is not satisfactory.

Method used

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  • Welding process for steel structural member with thin bottom plate
  • Welding process for steel structural member with thin bottom plate
  • Welding process for steel structural member with thin bottom plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] See Figure 1 to Figure 3 , a steel structure, having a base plate 1 with a thickness of 2-4 mm, grid-shaped reinforcing ribs 3 are fixed on the lower surface of the base plate 1, vertical edges 2 are fixed on three side edges of the base plate 1, and one side is open. In this embodiment, the thickness of both the thin base plate and the stiffener is 3 mm, the material is Q235-A, and the vertical side is a square tube of 6 mm.

[0023] The welding process steps are as follows:

[0024] ①. Prepare the base plate 1, reinforcing rib 2 and vertical edge 3, and prepare the process rib 4 in addition. After the base plate blanking is completed, mark the flame correction position on the surface of the base plate. The distance between the correction points is 95-105mm, and the horizontal and vertical are equal;

[0025] ②. The vertical edges on three sides are welded into a U shape and the deformation is corrected, and the raised part of the butt weld is smoothed;

[0026] ③. ...

Embodiment 2

[0033] The welding process steps are as follows:

[0034] ①. Prepare the base plate 1, reinforcing rib 2 and vertical edge 3, and prepare the process rib 4 in addition. After the base plate blanking is completed, mark the flame correction position on the surface of the base plate. The distance between the correction points is 95-105mm, and the horizontal and vertical are equal;

[0035] ②. The vertical edges on three sides are welded into a U shape and the deformation is corrected, and the raised part of the butt weld is smoothed; the reinforcement is assembled and welded and the deformation is corrected, and the raised part of the butt weld is smoothed;

[0036] ③. Assemble the bottom plate, vertical side group and rib group, and after the positioning is correct, spot weld and fix the three parts into assemblies;

[0037] ④. Clamp the assembly on the assembly platform with the upper surface of the base plate facing upwards. Several process ribs are arranged in parallel betwee...

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Abstract

The invention discloses a welding process for a steel structural member with a thin bottom plate. The steel structural member is provided with the bottom plate 1 with the thickness ranging from 2 mm to 4 mm, grid-shaped reinforcing ribs 3 are fixed to the lower surface of the bottom plate 1, vertical sides 2 are fixed to the edges of three sides of the bottom plate 1, and one side of the bottom plate 1 is open. The welding process comprises the steps of 1, preparing the bottom plate 1, the reinforcing ribs 3, the vertical sides 2 and process ribs 4; 2, completing installing and welding of the vertical sides on the three sides for forming a U shape and correcting deformation; 3, carrying out spot welding on the bottom plate and the vertical sides and fixedly connecting the bottom plate and the vertical sides for forming an assembly part; 4, carrying out single-face sectional spot welding on the process ribs and the bottom plate; 5, welding and fixing the reinforcing ribs and the vertical sides and welding and fixing the reinforcing ribs and the bottom plate; 6, carrying out secondary welding and fixing on the vertical sides and the bottom plate; 7, carrying out flame straightening; 8, reserving the process rib at the open end, disassembling the other process ribs and then completing all welding work. According to the welding process, deformation generated in the manufacturing and welding process of the steel structural member in the past is controlled, flame straightening is carried out according to the process requirements, and the welding stress is gradually weakened or disappears after flame straightening.

Description

technical field [0001] The invention relates to a thin bottom plate steel structure welding process. Background technique [0002] figure 1 The steel structure shown has a bottom plate 1 with a thickness of 2 to 4 mm. Grid-like ribs 3 are fixed on the bottom surface of the bottom plate 1. The thickness of both the bottom plate and the ribs is 3 mm. The material is Q235-A. There are vertical edges on the three sides of the bottom plate. 2. A square tube with an opening on one side and a vertical side 2 of 6 mm. The traditional processing method of the above-mentioned steel structure parts is to complete the assembly welding of the vertical sides and reinforcing ribs on the three sides, and then spot-weld the vertical side group, the bottom plate, and the reinforcing ribs to form an assembly, and then perform full welding on the assembly to complete Due to the welding stress of the welded steel structure, the uneven deformation of the thin bottom plate is obvious, and the fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02B23K37/00B23K103/04
CPCB23K31/02B23K37/00B23K2103/04
Inventor 贺建中
Owner 常州齐丰机械电子有限公司