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A special submerged arc horizontal welding flux for pressure storage tanks

A pressurized storage tank and flux technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of high price, improve the intergranular structure, ensure the yield ratio, refine the grain grain effect

Active Publication Date: 2017-07-28
TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, only a few foreign welding consumable factories have developed welding consumables for horizontal submerged arc welding with such properties, but they are expensive. Therefore, there is an urgent need to develop welding fluxes for horizontal submerged arc welding suitable for pressure storage tanks

Method used

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  • A special submerged arc horizontal welding flux for pressure storage tanks
  • A special submerged arc horizontal welding flux for pressure storage tanks
  • A special submerged arc horizontal welding flux for pressure storage tanks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The weight parts of various raw materials in the flux powder are as follows: (parts)

[0030] Calcium Oxide Magnesium Oxide Aluminum oxide Calcium fluoride Barium fluoride Rutile 813237912 Manganese Ore Powder Manganese Metal Ferrosilicon alloy Ferromolybdenum alloy Ferro Titanium Ferro Boron 78.56420.5

[0031] (2) The binder is high-modulus potassium sodium water glass with a modulus of 3.0-3.1 and a potassium-sodium ratio of 2:1.

[0032] (3) The submerged arc flux is made according to the above composition for testing. According to the national standard GB / T 12470-2003, with submerged arc welding wire H10Mn2 for pressure storage tanks, chemical composition analysis of deposited metal and mechanical performance 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℃.

[0033] ①Flux type: active flux.

[0034] ②S / P content of flux:

[0035] ...

Embodiment 2

[0042] (1) The weight parts of various raw materials in the flux powder are as follows: (parts)

[0043] Calcium Oxide Magnesium Oxide Aluminum oxide Calcium fluoride Barium fluoride Rutile 1414206912 Manganese Ore Powder Manganese Metal Ferrosilicon alloy Ferromolybdenum alloy Ferro Titanium Ferro Boron 77541.60.4

[0044] (2) The binder is high-modulus potassium sodium water glass with a modulus of 3.0-3.1 and a potassium-sodium ratio of 2:1.

[0045] (3) The submerged arc flux is made according to the above composition for testing. According to the national standard GB / T 12470-2003, with submerged arc welding wire H10Mn2 for pressure storage tanks, chemical composition analysis of deposited metal and mechanical performance 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℃.

[0046] ①Flux type: active flux.

[0047] ②S / P content of flux:

[0048]

[0...

Embodiment 3

[0055] (1) The weight parts of various raw materials in the flux powder are as follows: (parts)

[0056] Calcium Oxide Magnesium Oxide Aluminum oxide Calcium fluoride Barium fluoride Rutile 620208912.5 Manganese Ore Powder Manganese Metal Ferrosilicon alloy Ferromolybdenum alloy Ferro Titanium Ferro Boron 7.57531.70.3

[0057] (2) The binder is high-modulus potassium sodium water glass with a modulus of 3.0-3.1 and a potassium-sodium ratio of 2:1.

[0058] (3) The submerged arc flux is made according to the above composition for testing. According to the national standard GB / T 12470-2003, with submerged arc welding wire H10Mn2 for pressure storage tanks, chemical composition analysis of deposited metal and mechanical performance 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℃.

[0059] ①Flux type: active flux.

[0060] ②S / P content of flux:

[0061] ...

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Abstract

The invention provides a special submerged arc horizontal welding flux for a pressure-bearing storage tank. The special submerged arc horizontal welding flux comprises flux powder and adhesive. The flux powder comprises, by weight, 38-61 parts of oxides, 13-17 parts of fluorides, 12-17 parts of rutile, 7-11 parts of manganese mineral powder, 5-10 parts of metal manganese alloy, 5-8 parts of ferrosilicon, 1-5 parts of ferro-molybdenum, 0.5-2 parts of ferrotitanium and 0.1-0.5 part of ferro boron. The special submerged arc horizontal welding flux for the pressure-bearing storage tank can remarkably improve impact toughness, guarantee weld joint yield ratio, reduce the damage to the impact toughness, improve comprehensive performances of weld joints, meet the welding under large parameters, effectively perform supplementation against the burning loss of alloy elements in the welding process and guarantee that the mechanical properties of the weld joints meet the national standard requirements.

Description

Technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a special submerged arc transverse welding flux for pressure storage tanks. Background technique [0002] As the construction of large-scale pressure storage tanks in my country has entered a period of rapid development, the welding construction of pressure storage tanks is characterized by a large amount of welding tasks, high welding quality requirements, and long welding cycles of manual welding methods, which are difficult to meet large-scale production. New high-efficiency welding process is required, and the material has very high comprehensive performance index requirements. The steel used for pressure storage tanks has improved the tensile strength and low-temperature impact toughness. It also puts forward higher requirements for the tensile strength and low-temperature impact toughness of the supporting welding materials. There is an urgent need for a large number ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30
CPCB23K35/3026
Inventor 陈洋田国峰
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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