Butt welding method of column of steelmaking workshop

A welding method and plant column technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of affecting the structural installation period, large butt section size, uneven heating of the welding seam, etc., to shorten the butt welding installation time, The effect of low welding stress and uniform heating

Active Publication Date: 2015-04-08
CHINA MCC17 GRP
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Problems solved by technology

[0002] In the process of steel structure construction, it is often encountered that the installation interface of super-large workshop columns adopts the butt joint method. Since the workshop column is designed as a medium-thick plate solid web lattice structure, and the butt section size is large, when the steel column is installed butt welded, due to The welding process, improper welding sequence, welding speed and other factors lead to uneven heating of the weld, excessive welding stress and welding defects such as cracks, pores, slag inclusions, and incomplete penetration, resulting in weld rework and affecting structural installation. duration

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  • Butt welding method of column of steelmaking workshop

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Embodiment Construction

[0018] The butt welding method of the steelworks building and columns of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] As shown in the figure: in the butt welding method of steelworks building columns in the present invention, the flange plate 1, the arc starting plate 2, the web plate 3, the main web plate 4, the No. 1 weld 5, the No. 2 weld 6, and the No. 3 weld Seam 7, No. 4 weld 8, No. 6 weld 9, No. 5 weld 10, weld gap plate 11, positioning plate 12.

[0020] The butt welding method of the steelworks building column comprises the following steps:

[0021] A. Set the arc strike plate and preheat before welding:

[0022] Before welding, weld gap plates 11 are arranged symmetrically at the butt joints of the steel columns. The weld gap plates 11 are made of 30*4mm flat steel, and are evenly and symmetrically laid out. The width of the flange plate 1 is 0.8m, and the length of the main web 4 is 3.3m. ,...

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Abstract

The invention discloses a butt welding method of a column of a steelmaking workshop. The butt welding method of the column of the steelmaking workshop comprises the following steps that (1) end tabs are arranged, and weld preheating is carried out; (2) end tabs are arranged on two sides of each flange plate of a steel column before welding, rust removal and dirt removal are carried out on joints to be welded, preheating is carried out on base materials, and a preheating temperature is 100DEG C-150DEG C; (3) welding of components of the steel column is carried out according to the order of a welding process, and post-welding heat preservation is carried out. The butt welding method of the column of the steelmaking workshop has the advantages that welding joints are evenly heated, welding stress is small, the welding defects such as cracks, air holes, slag inclusion, and incomplete penetration are effectively overcome, time for butt welding installation of the column of the steelmaking workshop is shortened, use is safe and reliable, working efficiency is high, operability is good, and construction cost is reduced.

Description

technical field [0001] The invention relates to a structure welding method, more specifically, relates to a butt welding method of building columns in a large-scale steelmaking plant. Background technique [0002] In the process of steel structure construction, it is often encountered that the installation interface of super-large workshop columns adopts the butt joint method. Since the workshop column is designed as a medium-thick plate solid web lattice structure, and the butt section size is large, when the steel column is installed butt welded, due to The welding process, improper welding sequence, welding speed and other factors lead to uneven heating of the weld, excessive welding stress and welding defects such as cracks, pores, slag inclusions, and incomplete penetration, resulting in weld rework and affecting structural installation. construction period. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/02
Inventor 房政施光涛
Owner CHINA MCC17 GRP
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