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Special submerged arc horizontal welding flux for pressure-bearing storage tank

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, achieve the effect of improving intergranular structure, improving comprehensive performance and reducing damage

Active Publication Date: 2015-08-05
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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  • Special submerged arc horizontal welding flux for pressure-bearing storage tank
  • Special submerged arc horizontal welding flux for pressure-bearing storage tank
  • Special submerged arc horizontal welding flux for pressure-bearing storage tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0030] Calcium Oxide

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

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

[0033] ① Flux type: active flux.

[0034] ②Solder S / P content:

[0035] project

[0036] ③Chemical composition of deposited metal

[0037] project

[0038] ④ Measured values ​​of ...

Embodiment 2

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

[0043] Calcium Oxide

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

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

[0046] ① Flux type: active flux.

[0047] ②Solder S / P content:

[0048]

[0049] ③Chemical composition of deposited metal

[0050] project

[0051] ④ Measured values ​​of mechanical prope...

Embodiment 3

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

[0056] Calcium Oxide

magnesium oxide

Aluminum oxide

calcium fluoride

barium fluoride

rutile

6

20

20

8

9

12.5

Manganese ore powder

Metal manganese alloy

ferrosilicon alloy

molybdenum ferroalloy

Ferro-titanium alloy

Ferro-boron alloy

7.5

7

5

3

1.7

0.3

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

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

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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, in particular to a special submerged arc horizontal welding flux for pressure storage tanks. Background technique [0002] As the construction of large-scale pressure storage tanks in my country enters a period of rapid development, the welding construction of pressure storage tanks is characterized by a large amount of welding tasks and high welding quality requirements. The manual welding method has a long welding cycle and is difficult to meet large-scale production. Automatic welding not only High-efficiency new welding process is required, and at the same time, it has very high comprehensive performance index requirements for materials. Steel for pressure storage tanks has improved tensile strength and low-temperature impact toughness, etc., and puts forward higher requirements for the tensile strength and low-temperature impact toughness of supporting welding materials. There is an urgent ne...

Claims

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Application Information

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Patent Type & Authority Applications(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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