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Deformation-preventive welding process for end plates of steel structure roof truss

A welding process and steel structure technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve problems such as roof truss beams and column end plates that are prone to deformation, improve overall structural strength, prevent serious deformation, and save construction. Effects of cost and construction period

Inactive Publication Date: 2016-01-20
丁春燕
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Problems solved by technology

[0003] The purpose of the present invention is to provide a deformation-resistant welding process for the end plates of steel structure roof trusses, which solves the phenomenon that the end plates of roof truss beams and columns are easily deformed after welding, achieves the purpose of effectively preventing serious deformation of the end plates, and improves the steel structure. The overall structural strength of the roof truss, while saving the construction cost and construction period

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  • Deformation-preventive welding process for end plates of steel structure roof truss

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Embodiment Construction

[0015] Referring to the accompanying drawings, the welding process for anti-deformation of the end plate of the steel structure roof truss includes the following construction steps:

[0016] a. In the assembly process, when the upper and lower wing plates 1 and 2 open the breach 3, keep the direction of the groove consistent, and the angle of the groove is controlled at 30-40°;

[0017] b. In the welding process, the diameter of the welding wire is Φ1.2mm; the welding current is 280A; the welding voltage is 32V; the gas flow rate is 20ml / min. The specific construction sequence is as follows:

[0018] ① Weld the triangle plate of the upper wing plate 1 fully first;

[0019] ②The grooves of the upper and lower flanges should be primed. When the thickness of the flanges is >16mm, multi-layer and multi-pass welding methods should be adopted. After each welding, the welding slag spatter should be cleaned before the second welding can be welded to ensure penetration Welding require...

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Abstract

The invention discloses a deformation-preventive welding process for end plates of a steel structure roof truss. The deformation-preventive welding process comprises the following construction steps that a, in the assembling working procedure, the groove directions are kept to be consistent when grooves 3 are formed in an upper wing plate 1 and a lower wing plate 2, and the groove angles are controlled to be 30-40 degrees; and b, in the welding working procedure, the diameter phi of selected welding wires is 1.2 mm, the welding current is 280 A, the welding voltage is 32 V and the gas flow is 20 ml / min. According to the deformation-preventive welding process for the end plates of the steel structure roof truss, the problem that a roof truss beam and pillar and the end plates are liable to be severely deformed after being welded is solved, and the purpose of effectively preventing the end plates from severe deformation is achieved. The whole structure strength of the steel roof truss is improved, the construction cost is reduced, and the construction period is shortened at the same time.

Description

technical field [0001] The invention relates to the field of steel structure roof truss welding, in particular to a welding process for preventing deformation of end plates of steel structure roof trusses. Background technique [0002] For the field of steel structure production, welding is an important part of the construction part. The quality of welding seriously affects the bearing weight and service life of the steel structure. Because it is difficult to avoid welding deformation in the production and processing of various steel structure projects, resulting in After welding, a lot of manpower and material resources must be invested for correction, which has a huge impact on the entire construction period and production cost. Contents of the invention [0003] The purpose of the present invention is to provide a deformation-resistant welding process for the end plates of steel structure roof trusses, which solves the phenomenon that the end plates of roof truss beams ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B23K37/00
Inventor 丁春燕
Owner 丁春燕
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