A kind of corrosion-resistant high-strength high-toughness submerged arc welding flux and its application

A kind of buried arc welding, high -strength and tough technology, which is used in welding equipment, welding medium, welding/cutting medium/material, etc. to achieve the effects of welding tract aesthetics, ensuring welding quality, good corrosion resistance and crack resistance performance

Active Publication Date: 2021-08-24
TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early days, only Japan introduced the concept of this series of welding consumables and passed the experimental verification, while the research in this area in my country is still blank

Method used

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  • A kind of corrosion-resistant high-strength high-toughness submerged arc welding flux and its application
  • A kind of corrosion-resistant high-strength high-toughness submerged arc welding flux and its application
  • A kind of corrosion-resistant high-strength high-toughness submerged arc welding flux and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) The parts by weight of various raw materials in the flux powder are as follows: (parts / kg)

[0032]

[0033] (2) The binder is high modulus potassium sodium water glass with a modulus of 2.8-3.1 and a potassium-sodium ratio of 3:1; the weight ratio of high modulus potassium sodium water glass to flux powder is 1:4-5.

[0034] (3) The submerged arc flux is made according to the above ingredients for testing, and according to the national standard GB / T 12470-2003, with the proprietary marine atmospheric corrosion-resistant flux-cored welding wire (JQ.YJM500NH welding wire independently developed by Jinqiao) to deposit metal Chemical composition analysis, mechanical property test of deposited metal. Welding specification: The welding power supply is DC reverse connection, the welding heat input is 18-19KJ / cm, and the interpass temperature is 145-150°C.

[0035] ① Flux type: active flux.

[0036] ②Solder S / P content:

[0037] project S P guarantee ...

Embodiment 2

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

[0051]

[0052] (2) The binder is high modulus potassium sodium water glass with a modulus of 2.8-3.1 and a ratio of potassium to sodium of 3:1.

[0053] (3) The submerged arc flux is made according to the above ingredients for testing. According to the national standard GB / T 12470-2003, with the proprietary marine atmospheric corrosion-resistant flux-cored welding wire (JQ.YJM500NH welding wire independently developed by Jinqiao), the metal is deposited Chemical composition analysis, mechanical property test of deposited metal. Welding specification: The welding power supply is DC reverse connection, the welding heat input is 18-19KJ / cm, and the interpass temperature is 145-150°C.

[0054] ① Flux type: active flux.

[0055] ②Solder S / P content:

[0056] project S P guarantee value(%) ≤0.035 ≤0.040 Example value (%) 0.012 0.025

[0057] ③C...

Embodiment 3

[0068] (1) The parts by weight of various raw materials in the flux powder are as follows: (parts / kg)

[0069]

[0070] (2) The binder is high modulus potassium sodium water glass with a modulus of 2.8-3.1 and a ratio of potassium to sodium of 3:1.

[0071] (3) The submerged arc flux is made according to the above ingredients for testing, and according to the national standard GB / T 12470-2003, with the proprietary marine atmospheric corrosion-resistant flux-cored welding wire (JQ.YJM500NH welding wire independently developed by Jinqiao) to deposit metal Chemical composition analysis, mechanical property test of deposited metal. Welding specification: The welding power supply is DC reverse connection, the welding heat input is 18-19KJ / cm, and the interpass temperature is 145-150°C.

[0072] ① Flux type: active flux.

[0073] ②Solder S / P content:

[0074] project S P guarantee value(%) ≤0.035 ≤0.040 Example value (%) 0.014 0.022

[0075] ③Chem...

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Abstract

The invention provides a corrosion-resistant, high-strength, high-toughness submerged arc welding flux and its application. The submerged arc welding flux comprises the following components in parts by weight: 5-11 parts of acidic oxide, 48-61 parts of basic oxide, fluoride 30-40 parts, 0.1-0.5 parts of yttrium-based rare earth. The corrosion-resistant, high-strength and high-toughness submerged arc welding flux and its application in the present invention can improve corrosion resistance and crack resistance, and can be used for welding bridge steels resistant to marine atmospheric corrosion.

Description

technical field [0001] The invention belongs to the technical field of submerged arc welding consumables, in particular to a submerged arc welding flux with high corrosion resistance, high strength and high toughness. Background technique [0002] With the development of bridge construction in our country towards high speed, heavy load and long span, in order to ensure the safe operation and service life of bridges, the concept of weathering steel has begun to be applied in bridge construction. Today, marine atmospheric corrosion-resistant steel and welding consumables in the atmospheric-ocean climate environment will be a new development area. [0003] In recent years, as the alternative standards for marine corrosion-resistant steel have been continuously recognized, marine atmospheric corrosion-resistant steel will gradually replace coated steel and become the mainstream of corrosion protection methods for cross-sea bridges. In the early days, only Japan introduced the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
CPCB23K35/362
Inventor 侯云昌陈洋刘昕郝旭晨
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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