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A kind of high-strength and high-toughness submerged arc horizontal welding flux and its preparation method and application

A high-strength, high-toughness, flux technology, used in arc welding equipment, welding equipment, welding equipment, etc., can solve the problems of harsh slag shell viscosity, excessive molten iron fluidity, molten iron dripping, etc., to improve the welding process. Effect

Active Publication Date: 2022-06-28
TIANJIN YONGCHANG WELDING WIRES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, under the horizontal welding process, the fluidity of the molten iron and the viscosity of the slag shell are more stringent. The fluidity of the molten iron is poor, and it cannot fill the K-shaped groove. The fluidity of the molten iron is too good, and it is prone to dripping

Method used

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  • A kind of high-strength and high-toughness submerged arc horizontal welding flux and its preparation method and application
  • A kind of high-strength and high-toughness submerged arc horizontal welding flux and its preparation method and application
  • A kind of high-strength and high-toughness submerged arc horizontal welding flux and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) The weight parts of various raw materials in the flux powder are as follows: (parts)

[0051]

[0052] (2) According to the above components and submerged arc flux, according to the national standard GB / T 36034-2018 "High-strength steel solid welding wire, flux-cored welding wire and welding wire-flux classification and combination requirements for submerged arc welding" and GB / T47018-2017 "Submerged arc welding" Welding Materials Ordering Specifications for Pressing Equipment" to carry out the inspection of the sulfur and phosphorus content of the flux and the deposited metal, the mechanical property test of the deposited metal, as well as the radiographic flaw detection of the deposited metal and the bending test of the deposited metal.

[0053] According to the above standards, the welding test is carried out with H08MnMoA welding wire with a diameter of 4.0mm. The final indicators are as follows.

[0054] ① Flux sulfur and phosphorus content:

[0055]

...

Embodiment 2

[0064] (1) The weight parts of various raw materials in the flux powder are as follows: (parts)

[0065]

[0066] (2) The submerged arc flux was prepared according to the above-mentioned components, and the test was also carried out according to the specification of Example 1. The final indicators are as follows.

[0067] ① Flux sulfur and phosphorus content:

[0068]

[0069] ②The content of sulfur and phosphorus in the deposited metal

[0070]

[0071] ③Mechanical properties of deposited metal

[0072]

[0073] ④X-ray inspection: After X-ray inspection, the quality level is first-class.

[0074] ⑤Longitudinal bending test: both face bending and back bending are qualified.

[0075] (3) After the finished product, the particle size of the flux powder is 30-60 mesh, and the particle size of 40-50 mesh accounts for 60%.

Embodiment 3

[0077] (1) The weight parts of various raw materials in the flux powder are as follows: (parts)

[0078]

[0079] (2) The submerged arc flux was prepared according to the above-mentioned components, and the test was also carried out according to the specification of Example 1. The final indicators are as follows.

[0080] ① Flux sulfur and phosphorus content:

[0081]

[0082] ②The content of sulfur and phosphorus in the deposited metal

[0083]

[0084] ③Mechanical properties of deposited metal

[0085]

[0086] ④X-ray inspection: After X-ray inspection, the quality level is first-class.

[0087] ⑤Longitudinal bending test: both face bending and back bending are qualified.

[0088] (3) After the finished product, the particle size of the flux powder is 30-60 mesh, and the particle size of 40-50 mesh accounts for 58%.

[0089] In order to reflect the effect between the raw materials, the content of specially made elements does not conform to the comparative ex...

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Abstract

The invention provides a high-strength and high-toughness submerged arc horizontal welding flux and its preparation method and application, wherein the high-strength and high-toughness submerged arc horizontal welding flux includes flux powder and adhesive, and the flux powder includes the following parts by weight: Components: 20-25 parts of magnesium oxide, 9-15 parts of calcium oxide, 25-30 parts of aluminum oxide, 15-20 parts of barium fluoride, 5-10 parts of electrolytic manganese, 8-12 parts of silica mud, nickel Powder 1.5-2.5 parts. The high-strength and high-toughness submerged arc horizontal welding flux described in the present invention has a tensile strength of 620 MPa for the deposited metal and a high low-temperature impact energy. It is specially used for horizontal welding. welding quality.

Description

technical field [0001] The invention belongs to the field of flux in welding materials, in particular to a high-strength and high-toughness submerged arc horizontal welding flux, its preparation method and application. Background technique [0002] With the rapid development of the pressure storage tank industry, the material of the storage tank is improving day by day. Now the tensile strength of the pressure storage tank has been gradually improved. There are high-strength storage tanks using 12MnNiDR steel plate as the main material, which also makes the supporting submerged arc The performance requirements of horizontal welding consumables are improved. And under the horizontal welding process, the fluidity of the molten iron and the viscosity of the slag shell are more stringent. The fluidity of the molten iron is poor, and the K-shaped groove cannot be filled. The fluidity of the molten iron is too good, and the molten iron is prone to dripping. At the same time, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362B23K35/40B23K9/18
CPCB23K35/362B23K35/40B23K9/18
Inventor 侯云昌陈洋郝旭晨刘昕邢俊英赵娜
Owner TIANJIN YONGCHANG WELDING WIRES