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Special welding rod for nuclear grade dissimilar steel pipes and its preparation method

A welding rod and welding core technology, which is applied in the field of special welding rods for nuclear grade dissimilar steel pipelines, can solve the problems of incompatibility, poor welding process and welding quality, etc., and achieves small magnetic deflection, stable arc, and good all-position operability. Effect

Active Publication Date: 2021-07-02
ATLANTIC CHINA WELDING CONSUMABLES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN106346167B discloses a welding rod for martensitic heat-resistant steel welding. Although its welding performance is good, it is only suitable for martensitic heat-resistant steel welding. It is used for welding nuclear grade dissimilar steel pipelines and homogeneous steel products 06Cr17Ni12Mo2Ti, 06Cr17Ni12Mo2Nb welding, poor welding process and welding quality, not suitable for welding with this steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get welding core iron chromium nickel molybdenum manganese alloy 100Kg, each composition in the welding core is (wt%): C: 0.014, Mn: 1.95, Si: 0.22, Cr: 18.80, Ni: 11.90, Mo: 2.40, Cu: 0.042, S: 0.0052, P: 0.014, the balance being Fe and essential impurities.

[0031] Get the drug skin, the weight of each component in the drug skin is as follows: Containing CaCO 3 98.20% marble 6.0Kg; containing BaCO 3 98.70% Barium Carbonate 3.0Kg; Contains CaF 2 97.30% fluorite 4.5Kg; fluoride containing F53.7%, Na29.1% 2.0Kg; containing TiO 2 92.3% rutile 5.0Kg; containing SiO 2 46.1%, Al 2 o 3 26.5% silicate 0.8Kg; Mn99.5% electrolytic manganese 1.0Kg; Ti31.1% ferro-titanium 0.5Kg; Si45.6% ferrosilicon 1.0Kg; Fe98.5% iron powder 4.0Kg; ferrochromium containing Cr66.5% 4.0Kg; nickel powder containing Ni99.7% 2.0Kg; ferromolybdenum containing Mo56.5% 1.0Kg; ferroniobium containing Nb53.2% 1.5Kg; containing NaCl0. 35% soda ash 0.4Kg.

[0032] After the above powder is stirred a...

Embodiment 2

[0036] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.

[0037] In the present embodiment, the weight of each component in the medicine skin is as follows: Containing CaCO 3 98.20% marble 8.0Kg; containing BaCO 3 98.70% Barium Carbonate 2.0Kg; Contains CaF 2 3.5Kg of 97.30% fluorite; 3.5Kg of fluoride containing F53.7%, Na29.1%; containing TiO 2 92.3% rutile 2.5Kg; containing SiO 2 46.1%, Al 2 o 3 26.5% silicate 1.0Kg; Mn99.5% electrolytic manganese 1.2Kg; Ti31.1% ferro-titanium 1.0Kg; Si45.6% ferrosilicon 1.5Kg; Fe98.5% iron powder 3.0Kg; 3.0Kg ferrochrome containing Cr66.5%; 3.0Kg nickel powder containing Ni99.7%; 1.5Kg ferromolybdenum containing Mo56.5%; 2.0Kg ferroniobium containing Nb53.2%; containing NaCl0. 35% soda ash 0.2Kg.

[0038] The obtained austenitic stainless steel basic electrode 2 for nuclear-grade dissimilar steel pipes and homogeneous steel 06Cr17Ni12Mo2Ti and 06Cr17Ni12Mo2Nb was...

Embodiment 3

[0041] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.

[0042] In the present embodiment, the weight of each component in the medicine skin is as follows: Containing CaCO 3 98.20% marble 10.0Kg; containing BaCO 3 98.70% Barium Carbonate 1.0Kg; Contains CaF 2 2.0Kg of 97.30% fluorite; 5.0Kg of fluoride containing F53.7%, Na29.1%; containing TiO 2 92.3% rutile 0.5Kg; containing SiO 2 46.1%, Al 2 o 3 26.5% silicate 1.6Kg; Mn99.5% electrolytic manganese 1.5Kg; Ti31.1% ferro-titanium 1.5Kg; Si45.6% ferrosilicon 1.0Kg; Fe98.5% iron powder 2.0Kg; 2.5Kg ferrochrome containing Cr66.5%; 1.0Kg nickel powder containing Ni99.7%; 1.0Kg ferromolybdenum containing Mo56.5%; 2.2Kg ferroniobium containing Nb53.2%; containing NaCl0. 35% soda ash 0.5Kg.

[0043] The obtained austenitic stainless steel basic electrode 3 for nuclear-grade dissimilar steel pipes and homogeneous steel materials 06Cr17Ni12Mo2Ti and 06Cr17Ni...

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Abstract

The invention discloses a special welding rod for nuclear-grade dissimilar steel pipelines and a preparation method thereof. It is composed of a welding core and a coating covering the surface of the welding core. The composition and content of the coating are: 6-10 parts by weight of marble, barium carbonate 1‑3 parts by weight, 2‑5 parts by weight of fluorite, 0.5‑5 parts by weight of fluoride, 0.5‑5 parts by weight of rutile, 0.4‑2 parts by weight of silicate, 0.4‑1.5 parts by weight of electrolytic manganese, 0.5 parts by weight of ferrotitanium 1.5 parts by weight, 0.6-1.5 parts by weight of ferrosilicon, 2-4 parts by weight of iron powder, 2.5-4.5 parts by weight of ferrochromium, 0-3 parts by weight of nickel powder, 0-1.5 parts by weight of ferromolybdenum, 1-3 parts by weight of ferro-niobium parts, soda ash 0.2‑0.5. Compared with the existing ones, the invention has stable arc, less spatter, good slag fluidity, good slag removal, beautiful weld shape, small magnetic deflection and good operability in all positions during welding.

Description

technical field [0001] The invention relates to the technology in the field of welding materials, in particular to a special welding rod for nuclear-grade dissimilar steel pipelines, a preparation method and a welding method. Background technique [0002] The global energy is very scarce, and the environmental pollution is serious. Calling for the adoption of clean energy, green energy, and renewable energy, reducing harmful emissions has become the main way to reduce environmental pollution. In response to energy conservation, environmental protection, and emission reduction, countries around the world are vigorously accelerating the development of nuclear power energy, and my country is also rapidly developing nuclear power. , while the development trend of my country's nuclear power is the current development of pressurized water reactors, the development of fast neutron reactors in the medium term, and the development of fusion reactors in the long term. Specifically, ur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/04
CPCB23K35/3086B23K35/40
Inventor 袁宁蒋勇刘奇望徐晓龙白昶钟杰熊建坤郑亮亮吴海峰张红涛
Owner ATLANTIC CHINA WELDING CONSUMABLES
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