Steel bar fusion channel wall rod welding method

A welding method and technology for bar welding, applied in welding equipment, welding/welding/cutting items, arc welding equipment, etc., can solve the problems of low production efficiency, affecting welding quality, unstable welding quality, etc., to improve production efficiency , Improve welding speed and work efficiency, reduce the effect of manpower

Active Publication Date: 2016-03-09
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Welding of steel bar by using electrode arc welding welding method, due to the characteristics of this welding method, it has the disadvantages of low production efficiency and unstable welding quality
And solid wire CO 2 Gas metal arc welding itself is a low-hydrogen welding method. Before welding, the steel surface is required to be clean and free of dirt. However, there are rust and other dirt on the surface of the actual steel bar welding, so defects such as pores and slag inclusions inevitably exist after the steel bar is welded. , affecting welding quality

Method used

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  • Steel bar fusion channel wall rod welding method
  • Steel bar fusion channel wall rod welding method
  • Steel bar fusion channel wall rod welding method

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0037] First, prepare the machine tools and welding materials:

[0038] ① Welding equipment selects NB-350 inverter CO with good characteristics 2 Gas shielded welding machine;

[0039] ②The welding wire is ER501T-1 diameter 1.2mm flux core CO 2 Gas shielded welding wire.

[0040] Secondly, the pairing of welding test pieces is carried out:

[0041] ① Welding test pieces use Φ25mm HRB335 with 1 two steel bars and 2 35mm angle steel backing plates;

[0042] ② if figure 1 As shown in the schematic diagram of the pairing position of the grooves of the two sections of steel bars, the two steel bars 1 and one angle steel are arranged according to figure 1 way levels are grouped together, figure 1 Where b is 3-5㎜;

[0043] ③Choose ER501T-1 diameter 1.2mm core CO 2 Gas shielded welding wire, according to figure 2 4 sections of 10-20mm long tack welding are performed at the positions shown.

[0044] Finally, design welding levels and parameters

[0045] ①Butt welding bead ...

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PUM

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Abstract

The invention discloses a steel bar fusion channel wall rod welding method. The method comprises the following steps: (1) preparation before welding, namely paring two segments of steel bars which are to be welded, and horizontally and correspondingly arranging the ends of the steel bars; (2) performing positioned welding, namely performing gas metal arc welding by adopting a flux-cored wire which is capable of generating titanium-calcium type slag after being fused; performing spot welding for location at an angle steel base plate and the two sides of the to-be-welded steel bar by electric arc; (3) welding a steel bar end butting welding pass and an angle steel base plate reinforcing welding pass. By adopting a flux-cored wire CO2 semi-automatic gas shielded welding method, the method disclosed by the invention is capable of solving the problem that defects of air holes are easy to cause when the steel bar is welded by adopting solid-cored wire CO2 semi-automatic gas shielded welding, and the one-time percent of pass of a site-welded welding line can be doubled.

Description

technical field [0001] The invention relates to a welding method for side bar welding of a steel bar melting tank, which belongs to the field of welding technology. Background technique [0002] At present, in the existing steel bar welding in our country, the welding method of electrode arc welding is mainly used for connection. In recent years, a small amount of solid core welding wire CO has also appeared. 2 Gas metal arc welding welding method. The use of arc welding welding method for steel bar welding has the disadvantages of low production efficiency and unstable welding quality due to the characteristics of the welding method itself. And solid wire CO 2 Gas metal arc welding itself is a low-hydrogen welding method. Before welding, the steel surface is required to be clean and free of dirt. However, there are rust and other dirt on the surface of the actual steel bar welding, so defects such as pores and slag inclusions inevitably exist after the steel bar is welded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K33/00B21F15/08B23K103/04
CPCB21F15/08B23K9/173B23K33/004B23K2103/04
Inventor 王迎军张大刚何生贵焦荣格何萱苏召
Owner STATE GRID CORP OF CHINA
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