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Anti-corrosion, high-strength and high-toughness submerged arc welding agent and application thereof

A submerged arc flux, high-strength and high-toughness technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., to achieve good corrosion resistance and crack resistance, easy slag removal, and the effect of ensuring welding quality

Active Publication Date: 2019-04-23
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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  • Anti-corrosion, high-strength and high-toughness submerged arc welding agent and application thereof
  • Anti-corrosion, high-strength and high-toughness submerged arc welding agent and application thereof
  • Anti-corrosion, high-strength and high-toughness submerged arc welding agent and application thereof

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

guar...

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...

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 ...

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Abstract

The invention provides an anti-corrosion, high-strength and high-toughness submerged arc welding agent and application thereof. The anti-corrosion, high-strength and high-toughness submerged arc welding agent is prepared from following components by weight parts: 5-11 parts of acidic oxides, 48-61 parts of alkaline oxides, 30-40 parts of fluoride and 0.1-0.5 part of yttrium-based rare earth. According to the anti-corrosion, high-strength and high-toughness submerged arc welding agent and the application thereof, the corrosion resistance and the cracking resistance are improved, and the anti-corrosion, high-strength and high-toughness submerged arc welding agent and the application thereof are used for welding anti-sea-atmosphere-corrosion bridge steel.

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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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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