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Submerged arc flux for double wire welding and welding technology thereof

A technology of submerged arc flux and welding process, which is applied in the field of submerged arc flux and its welding process, and can solve problems not involving twin-wire welding flux and welding process

Inactive Publication Date: 2019-03-01
MCC BAOSTEEL TECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These patents are not related to twin wire welding flux and welding process

Method used

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  • Submerged arc flux for double wire welding and welding technology thereof
  • Submerged arc flux for double wire welding and welding technology thereof
  • Submerged arc flux for double wire welding and welding technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0076] According to the mass parts of the components in the submerged arc welding flux used for twin-wire welding provided in the present invention, after mixing the components, performing batching-stirring-granulation-drying-sintering-screening-packing in sequence to obtain the obtained Submerged arc flux samples 1#-8# are required. The parts by mass of each component in the submerged arc flux samples 1#-8# are shown in Table 1 below.

[0077] The submerged arc flux composition (Wt%) that is used for twin wire welding in the embodiment of table 1

[0078]

Embodiment 2

[0080] The submerged arc flux samples 1#-4# obtained in Example 1 are respectively subjected to single-wire and double-wire welding, the heat input is the welding line energy, the steel plate grade is E40, and the steel plate connection method is according to the submerged arc welding wire of China Classification Society Deposit metal evaluation method for connection. The specific conditions of single-wire and double-wire welding are shown in Table 2. The test results of the mechanical properties of the deposited metal of the submerged arc flux samples are shown in Table 3.

[0081] Table 2 Welding process conditions of single wire and double wire

[0082]

[0083]

[0084] Table 3 Mechanical properties of deposited metals welded by single wire and double wire

[0085]

[0086] At the same time, the submerged arc flux samples 6#-8# obtained in Example 1 are carried out with double wire welding, the heat input reaches 150KJ / cm, the steel plate grade is E40, and the s...

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Abstract

The invention provides submerged arc flux for double wire welding. The submerged arc flux comprises the following components including, by weight, 20-33 parts of CaF2, 25-40 parts of MgO, 5-16 parts of CaO, 10-25 parts of Al2O3, 3-15 parts of SiO2, 8-20 parts of CaCO3, 1-4 parts of a deoxidizer, 1-4 parts of an arc stabilizer, 0.001-0.005 part of Ti and 0.001-0.005 part of B. The invention furtherprovides a preparation method, application and a welding process of the submerged arc flux for double wire welding. The submerged arc flux for double wire welding and the welding technology of the submerged arc flux can be applied to welding of manufacturing industries of marine engineering equipment, wind power generation equipment, bridges, pressure vessels, pipelines and the like, can effectively improve the production efficiency of welding and can shorten welding time, and various mechanical properties of a welded metal plate meet the technical requirements.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and relates to a submerged arc flux for twin-wire welding and a welding process thereof. Background technique [0002] In the manufacturing industries of marine engineering equipment, bridges, pressure vessels, and pipelines, there are more and more large-volume construction projects. As the construction volume increases, the thickness of the construction steel also increases, and the welding efficiency in the manufacturing process also increases. With higher requirements, it is necessary to meet the performance requirements of high strength and high toughness, but also to meet the production needs of high efficiency, which is the demand trend of submerged arc welding materials. Most of the welding processes used at this stage are single-wire or single-arc welding, and it is difficult to further improve production efficiency. It is generally believed that the improvement of welding prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K35/362
CPCB23K9/18B23K35/362
Inventor 李好生张显辉李开添吴跃胜张莲翠常云琪贾军
Owner MCC BAOSTEEL TECH SERVICE