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Lime-titania type nuclear power nickel base covered electrode coating and preparation method thereof

A nickel-based electrode, nuclear power technology, applied in the direction of welding equipment, welding medium, manufacturing tools, etc., to achieve the effects of arc stability, excellent electrode operation performance, and excellent welding process performance

Active Publication Date: 2012-11-14
POWERCHINA SPEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a relatively simple composition with excellent welding process performance in order to solve the welding problem of the above-mentioned nuclear power Inconel 690 nickel-based material, and the weld seam can have good high temperature strength and impact toughness at the same time, Electrode covering for welding with nuclear power nickel-based materials that can withstand nuclear radiation

Method used

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  • Lime-titania type nuclear power nickel base covered electrode coating and preparation method thereof
  • Lime-titania type nuclear power nickel base covered electrode coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The titanium-calcium type nuclear power nickel-based electrode coating of this embodiment is formed by mixing solid components and liquid components, and the addition quality of the liquid components is 20% to 25% of the solid component quality; wherein

[0037] The solid components are mixed by the following raw materials in weight percentage: marble: 20%, fluorite: 9%, artificial rutile: 35%, titanium dioxide: 2%, feldspar: 3%, metal manganese: 10%, titanium iron : 5%, Soda Ash: 0.5%, CMC: 0.5%, Nickel Powder: 1%, Metal Chromium: 6%, Ferroniobium: 5%, Ice Crystal Powder: 2% and Cr 2 o 3 Powder: 1.0%. Among them, the Ti content in ferro-titanium is 27%-28%, and the Nb content in ferro-niobium is 52-55%.

[0038] The liquid component is potassium-sodium water glass with a potassium-sodium ratio of 3:1 at 40 to 42 Be' at 20°C.

[0039] After mixing the raw materials of the solid component evenly in proportion, sift through a 40-mesh sieve to obtain a dry powder of the...

Embodiment 2

[0041] The titanium-calcium type nuclear power nickel-based electrode coating of this embodiment is formed by mixing solid components and liquid components, and the addition quality of the liquid components is 20% to 25% of the solid component quality; wherein

[0042]The solid components are mixed by the following raw materials in weight percentage: marble: 16%, fluorite: 6%, artificial rutile: 39%, titanium dioxide: 3%, feldspar: 4%, metal manganese: 8%, titanium iron : 5%, Soda Ash: 0.5%, CMC: 0.5%, Nickel Powder: 1%, Metal Chromium: 6%, Ferroniobium: 5%, Ice Crystal Powder: 5% and Cr 2 o 3 Powder: 1.0%.

[0043] The liquid component is potassium-sodium water glass with a potassium-sodium ratio of 3:1 at 40 to 42 Be' at 20°C.

[0044] The electrode coating preparation method of this embodiment is the same as that of embodiment 1.

Embodiment 3

[0046] The titanium-calcium type nuclear power nickel-based electrode coating of this embodiment is formed by mixing solid components and liquid components, and the addition quality of the liquid components is 20% to 25% of the solid component quality; wherein

[0047] The solid components are mixed by the following raw materials in weight percentage: marble: 12%, fluorite: 8%, artificial rutile: 42%, titanium dioxide: 3%, feldspar: 3%, metal manganese: 12%, titanium iron : 3%, Soda Ash: 0.5%, CMC: 0.5%, Nickel Powder: 2%, Metal Chromium: 6%, Ferroniobium: 5%, Ice Crystal Powder: 4% and Cr 2 o 3 Powder: 1.0%.

[0048] The liquid component is potassium-sodium water glass with a potassium-sodium ratio of 3:1 at 40 to 42 Be' at 20°C.

[0049] The electrode coating preparation method of this embodiment is the same as that of embodiment 1.

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Abstract

The invention relates to a lime-titania type covered electrode coating in the welding technical field, in particular to a covered electrode coating used for a nickel base material Inconel 690 in nuclear power equipment. The covered electrode coating comprises solid components of, by mass, 12-20% of marble, 6-10% of fluorite, 35-42% of artificial rutile, 2-4% of titanium dioxide, 2-5% of feldspar, 8-15% of manganese metal, 3-6% of ferrotitanium, 0-1% of soda, 0-1% of CMC, 1-3% of nickel powder, 5-8% of chromium metal and 5-8% of ferroniobium, and the powder of the components are evenly mixed to produce the covered electrode coating. By aid of the technical scheme, the problem of poor welding technology of the covered electrode caused by low melting point, large metal viscosity and the like of the nuclear power nickel base material is solved completely, and deposited metal of the covered electrode is provided with good mechanical properties.

Description

technical field [0001] The invention relates to an electrode coating in the field of welding materials, in particular to an electrode coating used for nuclear power Inconel 690 nickel-based materials and a preparation method thereof. Background technique [0002] Because nuclear power equipment has to be subjected to high temperature and nuclear radiation for a long time, its materials are required to have good radiation resistance and high temperature resistance, etc. Therefore, Inconel690 nickel-based alloy with excellent nuclear radiation resistance and high temperature resistance is widely used in the key of nuclear power equipment Among the components, the corresponding electrode must also be able to withstand high temperature strength and impact toughness, and the properties of the deposited metal of the electrode after nuclear radiation can remain basically unchanged. [0003] Since the melting point of nickel-based alloys is 100-150°C lower than that of ordinary carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/365
Inventor 杨光磊仇陆弟张敏娟何国秦仁耀
Owner POWERCHINA SPEM CO LTD
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