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Corrosion-resistance stainless steel electric welding rod used for nuclear power and production method thereof

A corrosion-resistant, stainless steel technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of poor weld formation, rough weld formation, poor arc stability, etc., and achieve strong corrosion resistance, Excellent yield strength, excellent impact effect

Active Publication Date: 2014-12-03
ATLANTIC CHINA WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deficiencies of similar nuclear welding electrodes from foreign manufacturers are mainly reflected in the flat welding process, the arc is soft, the arc blowing force is small, the drug skin is red during the welding process, the weld shape is rough, and the slag removal is poor; there is slag removal during vertical welding Unclean, residues are not easy to clean up, weld formation is not smooth, etc. Other domestic manufacturers have poor arc stability, low arc blowing force, large welding spatter, narrow weld bead, poor weld formation, and Poor slag performance and other disadvantages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] The welding core composition is (wt%): C: 0.0065%, Mn: 1.91%, Si: 0.028%, Cr: 20.30%, Ni: 10.10%, Mo: 0.01%, Co: 0.0015%, Cu: 0.001%, V: 0.0155%, N: 0.008%, S: 0.0045%, P: 0.0055%, 100 kg of chromium-nickel alloy welding core with Fe and impurities as the balance.

[0087] Get the drug skin, the weight of each component in the drug skin is as follows: Containing CaCO 3 98.50% Marble 3.0kg with CaF 2 97.50% Fluorite 1.5kg with SiO 2 63.7%, Al 2 o 3 17.2%, K 2 O+Na 2 O16.2% feldspar powder 4.5kg, containing TiO 2 96.7% rutile 15.0kg with SiO 2 48.9%, Al 2 o 3 29.9%, K 2 O+Na 2 O10.5% calcined mica 3.5kg, Cr66.7% micro-carbon ferrochrome 7.8kg, Ni99.8% nickel powder 0.2kg, Mn99.95% electrolytic manganese 1.2kg, Na 2 O12.67% sodium alginate 0.4kg, iron oxide red 0.2kg.

[0088] After mixing the above powder evenly, add 5.8 kg of potassium sodium water glass with a concentration of 40°-45° and mix evenly, then send it into the plodder to wrap it on the welding c...

Embodiment 2

[0092] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.

[0093] In the present embodiment, the weight of each component in the medicine skin is as follows: Containing CaCO 3 98.50% Marble 5.0kg with CaF 2 97.50% Fluorite 2.0kg with SiO 2 63.7%, Al 2 o 3 17.2%, K 2 O+Na 2 O16.2% feldspar powder 5.0kg, containing TiO 2 96.7% rutile 13.0kg with SiO 2 48.9%, Al 2 o 3 29.9%, K 2 O+Na 2 O10.5% calcined mica 2.5kg, Cr66.7% micro-carbon ferrochrome 8.0kg, Ni99.8% nickel powder 0.3kg, Mn99.95% electrolytic manganese 1.0kg, Na 2 O12.67% sodium alginate 0.45kg, iron oxide red 0.22kg.

[0094] The obtained corrosion-resistant stainless steel welding rod for nuclear power was subjected to ultra-low carbon 022Cr19Ni10 stainless steel welding experiments, and its deposited metal composition: Cr.19.75%, Ni.9.82%, Mo.0.031%, C.0.017%, Mn.0.78%, Si.0.63%, V.0.046%, Cu.0.015%, Nb.0.019%, CO.0.014%, S.0.009%, P.0...

Embodiment 3

[0097] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.

[0098] In the present embodiment, the weight of each component in the medicine skin is as follows: Containing CaCO 3 98.50% marble 2.5kg with CaF 2 97.50% Fluorite 1.2kg with SiO 2 63.7%, Al2 o 3 17.2%, K 2 O+Na 2 O16.2% feldspar powder 4.0kg, containing TiO 2 96.7% rutile 18.0kg with SiO 2 48.9%, Al 2 o 3 29.9%, K 2 O+Na 2 O10.5% calcined mica 1.5kg, Cr66.7% micro-carbon ferrochrome 8.2kg, Ni99.8% nickel powder 0.4kg, Mn99.95% electrolytic manganese 1.2kg, Na 2 O12.67% sodium alginate 0.35kg, iron oxide red 0.18kg.

[0099] The obtained corrosion-resistant stainless steel welding rod for nuclear power was subjected to an ultra-low carbon 022Cr19Ni10 stainless steel welding experiment, and its deposited metal composition: Cr.20.20%, Ni.9.94%, Mo.0.030%, C.0.018%, Mn.0.82%, Si.0.68%, V.0.057%, Cu.0.016%, Nb.0.017%, CO.0.013%, S.0.010%, P.0...

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Abstract

The invention discloses a corrosion-resistance stainless steel electric welding rod used for nuclear power and a production method thereof, and relates to a nuclear power product. The corrosion-resistance stainless steel electric welding rod used for the nuclear power consists of a chrome-nickel alloy welding core and a coating covered on the surface of the welding core, wherein the chrome-nickel alloy welding core comprises the following ingredients: less than or equal to 0.01wt% of C, 1.00-2.50wt% of Mn, less than or equal to 0.030wt% of Si, 19.6-21.0wt% of Cr, 9.6-10.6wt% of Ni, less than or equal to 0.20wt% of Mo, less than or equal to 0.10wt% of Co, less than or equal to 0.10wt% of Cu, less than or equal to 0.10wt% of V, less than or equal to 0.035wt% of N, less than or equal to 0.015wt% of S, less than or equal to 0.012wt% of P and the balance of Fe and impurities. Compared with the prior art, the corrosion-resistance stainless steel electric welding rod used for the nuclear power, which is disclosed by the invention, has the advantages of good molten slag liquidity during welding, stable electric arc, big electric arc blowing force, even molten slag coverage, small splashing, excellent slag removal, small welding smoke, light welding line, attractive appearance, moderate welding bead height and good full-position operation performance.

Description

technical field [0001] The invention relates to an electric welding electrode, in particular to an electric welding electrode which meets the requirements of RCC-M standard and E308L-16 in the ASME standard and is mainly used for welding key parts in the nuclear power field of stainless steel with high requirements for corrosion resistance, high temperature resistance and durable strength. and methods of production thereof. Background technique [0002] Energy security is an important guarantee for national economic security, and national nuclear power is a strategic clean energy project that involves national economic security. With the continuous development of the national economy, the demand for energy is increasing. As of 2006, the steel plates and welding materials used in domestic nuclear power construction have been completely dependent on foreign imports, and they have been monopolized by a few companies. Therefore, it is particularly important to carry out the lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/365B23K35/40
Inventor 王若蒙李典钊
Owner ATLANTIC CHINA WELDING CONSUMABLES
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