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Welding joints and welding methods of highway steel bridge composite plates

A welding method and composite plate technology are applied in the fields of brazing, electrodes, materials or media, welding or cutting electrodes, which can solve the problems of low efficiency of welding slag beating and processing, and achieve the advantages of easy promotion, simple welding method and simple operation. Effect

Inactive Publication Date: 2019-04-16
CHONGQING VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a welded joint and a welding method for a highway steel bridge composite plate, so as to solve the problem of low welding slag beating processing efficiency in the process of welding joints using arc welding in the prior art

Method used

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  • Welding joints and welding methods of highway steel bridge composite plates
  • Welding joints and welding methods of highway steel bridge composite plates
  • Welding joints and welding methods of highway steel bridge composite plates

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Experimental program
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Effect test

Embodiment 2

[0037] The difference between Embodiment 2 and Embodiment 1 is that the eccentric cam 1 in the automatic beating device prepared in step (1) includes three evenly distributed convex surfaces, and the eccentric cam 1 is rotated by using the three evenly distributed convex surfaces. During the process, one of the convex surfaces pushes the long arm end 201, while the other convex surface pushes the protrusion 12, so that the hammer head 3 can use the negative pressure to push the weld slag from the branch pipe 4 during the process of beating the welding slag. Adsorbed into the L-shaped grinding rod 2, so that beating and adsorption can be carried out simultaneously, and the cleaning effect is good.

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Abstract

The invention discloses a welding method of a highway steel bridge composite board joint. The welding method comprises the steps of welding a base layer, a transition layer and a covering layer with an arc welding method by using a welding gun, and beating and removing welding slag generated during welding by utilizing an automatic beating device. The invention further discloses a welded joint of a highway steel bridge composite board, which is welded by utilizing the welding method of the highway steel bridge composite board. The welded joint is prepared by using the arc welding method, an X-shaped groove form is adopted, the base layer is made of E5015 welding rods, the transition layer is made of 2209 welding rods, the welding current is 175 A, the welding voltage is 25 V, and the welding speed is 16 cm / min. According to the technical scheme, the welding slag is beaten, removed and collected by utilizing the automatic beating device, the welding method of the highway steel bridge composite board joint has the advantages of simplicity, convenience, high efficiency, high degree of automation and convenience in popularization in engineering, and the prepared welded joint has the advantages of good strength, toughness and corrosion resistance, no cracks in welding seam transition areas and high tensile strength.

Description

technical field [0001] The invention belongs to the technical field of electrodes, electrodes, materials or media for brazing, welding or cutting. Background technique [0002] The application of highway steel bridges is becoming more and more extensive, including cable-stayed bridges, suspension bridges, arch bridges and other bridge shapes. Highway steel bridges have the advantages of high strength, light weight, and fast construction speed. However, the main connection method of highway steel bridge structures is completed by welding. The quality of welding technology determines the safety of the entire steel bridge structure project to a certain extent. and stability. [0003] At present, the commonly used welding methods include arc welding and argon tungsten arc welding, etc. The welding sequence includes welding the base layer first, and then welding the cladding. In the process of using arc welding to weld composite plate joints, the base layer is welded first. Aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/00B23K9/235B23K9/32B23K33/00B23K37/08
CPCB23K9/0026B23K9/235B23K9/32B23K33/004B23K37/08
Inventor 陈杨卢强
Owner CHONGQING VOCATIONAL INST OF ENG