Welding technique for steel structure box column

A welding process and box-column technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve problems affecting welding quality and welding progress, welding seam cannot guarantee uniform penetration, steel structure box-shaped Problems such as large column weight, to achieve the effect of small welding stress, small welding shrinkage and deformation, and high welding quality

Inactive Publication Date: 2016-04-06
ANHUI WEIHONG STEEL STRUCTURE GRP
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AI Technical Summary

Problems solved by technology

Among them, the steel columns of multi-story steel structure buildings mostly adopt H-shaped steel, round pipe steel, cross-shaped steel, steel structure box-type columns, etc., because the steel structure box-type columns have good working performance in two mutually perpendicular directions of force , which can better satisfy the strength of the steel column and t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The inner cavity of the box-shaped column needs to add partitions. Some of these partitions are designed because of the need to strengthen the beam-column connection, and some are required by the manufacturing process. The separator is welded by electroslag welding.

[0014] A welding process for a steel structure box column, including pre-welding treatment, diaphragm electroslag welding, box column main seam welding and post-weld heat preservation, specifically:

[0015] 1. Pre-welding treatment: Before welding, clean the rust, oxidation slag, and oil stains within 50mm on both sides of the joint to be welded and the welded part.

[0016] 2. Electroslag welding of clapboard: The clapboard in the inner cavity of steel structure box column is welded by electroslag welding. HJ360 flux and silicon-containing welding wire are used to weld the weld beads on both sides of the clapboard at the same time. The welding conditions are: welding The current is 300-350A, the welding...

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PUM

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Abstract

The invention discloses a welding technique for a steel structure box column. The welding technique comprises the following steps that rust, oxidizing slag and oil stains on connectors to be welded and areas which are 50-millimeter within the two sides of a welding portion are polished to be clean; partition plates of an inner cavity of the steel structure box column are welded through electroslag welding, and weld beads on the two sides of the partition plates are welded at the same time through HJ360 welding flux and silicon-contained welding wires; two main weld joints are welded at the same time, then the box column is turned by 180 degrees, and the other two main weld joints are welded at the same time; and heat preservation is conducted on the weld joints after welding is finished, ultrasonic flaw detection is conducted on the weld joints 38 hours later after welding, and the welding quality is guaranteed. According to the welding technique for the steel structure box column, the operability is high, the weld joints are heated uniformly, fusion penetration is uniform, the welding stress is small, the welding contraction deformation is small, the welding quality is high, and the welding speed is increased.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a welding process for steel structure box columns. Background technique [0002] Steel structure buildings have been widely promoted in China in recent years. Compared with concrete structures, steel structure buildings have the advantages of less total steel consumption, industrialized component manufacturing, good earthquake resistance, fast installation speed, and low cost. in civil buildings. Among them, the steel columns of multi-story steel structure buildings mostly adopt H-shaped steel, round pipe steel, cross-shaped steel, steel structure box-type columns, etc., because the steel structure box-type columns have good working performance in two mutually perpendicular directions of force , which can better satisfy the strength of the steel column and the stability of the overall structure, and the welding of the steel structure box-shaped column is the key proc...

Claims

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Application Information

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IPC IPC(8): B23K28/02B23K101/24B23K103/04
CPCB23K28/02B23K2101/24B23K2103/04
Inventor 曹雁冰
Owner ANHUI WEIHONG STEEL STRUCTURE GRP
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