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Full penetration fillet weld back-chipping-free welding process for large-scale H-shaped steel

A welding process and H-shaped steel technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of increasing welding material cost and energy consumption, poor operating environment for workers, and many welding procedures, so as to ensure the groove Dimensional accuracy and welding quality, removal of root removal workload, and reduction of welding work procedures

Active Publication Date: 2015-09-23
CHINA SIXTH METALLURGICAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon arc gouging is used for root cleaning, many welding procedures and long periods, which not only increase the cost of welding materials and energy consumption, but also cause large welding deformation, low production efficiency, high noise, and poor operating environment for workers

Method used

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  • Full penetration fillet weld back-chipping-free welding process for large-scale H-shaped steel
  • Full penetration fillet weld back-chipping-free welding process for large-scale H-shaped steel
  • Full penetration fillet weld back-chipping-free welding process for large-scale H-shaped steel

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] see figure 1 , figure 2 , a large-scale H-shaped steel full-penetration fillet weld without root-cleaning welding process, for H-shaped steel with a web thickness of 40-45mm and a wing plate thickness of 50-55mm, the full-penetration fillet weld without root-cleaning group butt welding , which includes the following steps:

[0025] ① Groove design: Through the simulation lofting of the actual thickness of the web and flange through the drawing software, ensure that the distance from the end of the welding wire to the root of the weld seam is as short as possible, so that short-arc welding can be used, and the angle of welding wire 3 is adjusted to the angle of the welding wire. The center line is aligned with the intersection point of the wing plate 2 and the web plate 1, so that no in-penetration and in-fusion defects...

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Abstract

The invention relates to a large-scale H-shaped steel welding forming process, in particular to a full penetration fillet weld back-chipping-free welding process for large-scale H-shaped steel. Full penetration fillet weld back-chipping-free assembling and welding are conducted on the H-shaped steel with the thickness of a web being 40-45 mm and the thickness of a wing plate being 50-55 mm. Double-faced grooves are adopted in the web, truncated edges are avoided, the double-faced grooves comprise the V-shaped groove in the upper portion and the arc U-shaped groove in the bottom in a combined mode, then groove machining is conducted, check is conducted through a groove check plate, and accordingly the web and the wing plate are assembled and welded. According to the process, the welding process parameters are designed according to the groove size, the welding principle, the penetration requirement and the like, machining is adopted in web grooving, the machining speed is high, the groove size precision and welding quality are guaranteed, and the one-time welding check percent of pass reaches 98.3%.

Description

technical field [0001] The invention relates to a large-scale H-shaped steel welding forming process, in particular to a large-scale H-shaped steel full-penetration fillet weld-free welding process. Background technique [0002] Building steel structures are developing towards high-rise heavy-duty and space-long-span steel structures, and the demand for large-space and super-large-space buildings is very strong. Large H-beams are widely used in columns, beams, crane beams and other fields of heavy steel structures in large buildings. [0003] At present, large-scale H-shaped steel components are mainly assembled by welding. Heavy-duty H-shaped steel components usually use steel plates with a thickness of 35-55 as the web and flange, and V-shaped or U-shaped process grooves are made on both sides of the web and then Web and wing plates are assembled and welded. [0004] The web groove of the existing technology adopts V-shaped groove or U-shaped groove, and the processing o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/235
CPCB23K9/18B23K9/235
Inventor 王燕妮江茜张鑫袁小平陈玲风
Owner CHINA SIXTH METALLURGICAL CONSTR
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