Column welding method of q420b steel building steel structure for heavy and large

A welding method and technology for steel structures, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problem that welding methods cannot be borrowed, and achieve the effects of reducing energy consumption, improving welding quality and saving energy.

Active Publication Date: 2017-06-16
CHINA 19TH METALLURGICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large difference in alloy composition between Q420B steel and Q345, Q370qE steel, the welding method used for Q345, Q370qE steel components cannot be borrowed from Q420B steel

Method used

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  • Column welding method of q420b steel building steel structure for heavy and large
  • Column welding method of q420b steel building steel structure for heavy and large

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Such as figure 1 As shown, in the column welding method of heavy-duty and large-scale Q420B steel building steel structures of the present invention, Q420B steel plates with a thickness of 40 to 50 mm are cut into web weldments and flange plate weldments, and then full penetration butt welding of the web The weldment is made into a web, and the weldment of a full-penetration butt-welded flange plate is made into a flange plate, and the T-shaped joint of the partly welded web and flange plate is combined, and the web and flange plate are welded into H-shaped steel Upright column; including making web weldment and flange plate weldment, making grooves at welded joints, dehumidifying web weldment and flange plate weldment, and making web and flange plate weldments with full penetration butt welding Full penetration butt welded flange plate weldment...

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Abstract

The invention discloses a vertical column welding method for a heavy and large Q420B steel building steel structure. The method comprises the steps of manufacturing a web welding part and a wing flange plate welding part; forming a grooving opening in a weld joint; dehumidifying the web welding part and the wing flange plate welding part; performing full penetration welding to abut and weld the web welding part to obtain a web; performing full penetration welding to abut and weld the wing flange plate welding part to obtain a wing edge plate; performing local penetration welding for a T joint for combining the web and the wing edge plate; performing temperature maintenance and slow cooling treatment for the weld joint. According to the method, the automatic submerged arc welding multi-layer multi-weld process is utilized, so that the automation degree of welding is high; extremely less cold cracks occur in the weld joint structure, and thus the welding quality is high; the labor intensity in welding process is reduced, little welding is performed, so that the welding hours can be greatly reduced; the demand of construction of the heavy and large building steel structure can be comprehensively met by the welding process.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a column welding method for heavy-duty and large-scale Q420B steel building steel structures. Background technique [0002] In the field of construction steel structure technology, the thickness of the steel plate of the main component is usually greater than or equal to 10mm, or the lifting weight of the lifting device is greater than or equal to 25 tons, or the amount of steel per square meter is greater than or equal to 50Kg / M 2 The steel structure is called heavy steel structure, and the steel structure with large span, large building area and large amount of steel is called large steel structure. Heavy-duty or large-scale architectural steel structures are widely used in the construction of large-scale industrial plants or large-scale and super-large industrial equipment, such as the setting and protection of metallurgical converters. [0003] In the metallurgical industry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/18B23K9/235
CPCB23K9/18B23K9/235
Inventor 陈川宝
Owner CHINA 19TH METALLURGICAL CORP
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