Welding process method suitable for large-section medium-thickness plate box column

A welding process and large-section technology, applied in welding media, welding equipment, welding equipment, etc., can solve problems such as inappropriateness, improve welding quality, prevent defects such as cracks, and improve the first pass rate.

Pending Publication Date: 2020-05-19
郑州宝冶钢结构有限公司 +1
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Problems solved by technology

However, the welding steps of the thick plate of the steel structure box column are particular, and the method of welding multiple welding torches at the same time is not suitable for the welding of large cross-section box columns.
The Chinese patent with the publication number CN110270737A discloses a welding process for a steel structure box-shaped column. The box body is split into several box body wall plate units, which are assembled and welded separately to ensure the processing quality of the plate units, and then the box body is assembled and welded. The overall assembly of the box column is suitable for the processing and manufacturing of the box column in the factory, and it is a welding technology for the longitudinal fillet weld. Column welding

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  • Welding process method suitable for large-section medium-thickness plate box column
  • Welding process method suitable for large-section medium-thickness plate box column
  • Welding process method suitable for large-section medium-thickness plate box column

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with drawings and embodiments.

[0031] A welding process suitable for large-section medium-thick plate box columns, comprising the following steps:

[0032] Step (1) The general principle to be followed in welding: the welding of the four outer box butt transverse joints of the upper and lower columns of the box-shaped column and the cross-shaped butt joint transverse joints in the cavity generally follow the internal and external, front and rear, left and right symmetry, and the same direction and the same specification The principle of welding.

[0033] Step (2) Welding sequence and section division:

[0034] A. If figure 1As shown, first divide the welding area into eight sections, which are ① section, ② section, ③ section, ④ section, ⑤ section, ⑥ section, ⑦ section and ⑧ section, and the welding sequence Section ①→section ②→section ③→section ④→section ⑤→section ⑥→section ⑦→section ⑧, where ①-⑥ ...

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Abstract

The invention discloses a welding process method suitable for a large-section medium-thickness plate box column. The same large-section medium-thickness plate box column is subjected to segment-by-segment welding by work shifts, a construction segment is reasonably divided, assembly construction is organized, before the whole-section welding line is closed, inner stress generated by welding is gradually released, in combination with after-welding heat treatment measures, welding residual stress is greatly reduced, the welding process method can effectively release welding stress at proper time, defects of cracks and the like generated by welding can be prevented, the welding quality is improved, the one-time yield of welding quality can be improved, the construction period is shortened, and cost is control is benefited.

Description

technical field [0001] The invention relates to a welding method for a box-shaped column, in particular to a welding process suitable for a medium-thick plate box-shaped column with a large cross-section. Background technique [0002] The steel structure not only makes the construction project have a larger span space, but also has the advantages of convenient installation, low construction cost, good earthquake resistance, energy saving and environmental protection, so it is more and more widely used in construction projects. With the further development of my country's urbanization process, the number of large-span super high-rise buildings has increased sharply, making the application of butt welding of large-section medium-thick plate box columns more and more common. However, in the process of butt welding of steel structure box columns, due to the selection of base metal welding materials, groove design, welding sequence, welding process parameters, and differences in ...

Claims

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Application Information

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IPC IPC(8): B23K31/02
CPCB23K31/02B23K35/0261
Inventor 任青峰唐志超朱文峰赵伟光阎中钰王岩松
Owner 郑州宝冶钢结构有限公司
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