CN102828070B - Protective coating material for boiler pipeline - Google Patents

Protective coating material for boiler pipeline Download PDF

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Publication number
CN102828070B
CN102828070B CN201210305846.7A CN201210305846A CN102828070B CN 102828070 B CN102828070 B CN 102828070B CN 201210305846 A CN201210305846 A CN 201210305846A CN 102828070 B CN102828070 B CN 102828070B
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coating material
coated material
protective coating
boiler
surplus
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CN102828070A (en
Inventor
戴初发
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Ningbo Sunlight Motor Parts Co Ltd
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Ningbo Sunlight Motor Parts Co Ltd
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  • Coating By Spraying Or Casting (AREA)
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Abstract

The invention discloses a protective coating material for a boiler pipeline. The protective coating material comprises the following components by weight percent: 12%-14% of Cr, 0.4%-0.6% of Mn, 2%-3% of Ti, 3%-5% of Al, 2%-4% of Si, 1%-2% of Nb, 8%-12% of Fe, 1%-3% of Co, 3%-5% of Mo, less than or equal to 0.025% of S, less than or equal to 0.035% of P and the balance of Ni.

Description

A kind of boiler tubing barrier material
Technical field
The present invention relates to coated material preparation field, particularly a kind of boiler tubing barrier material.
Background technology
In coal-fired power plant, boiler in hot environment, is subject to flue gas or is suspended in ash content effect wherein for a long time, and the high temperature corrosion that can occur in various degree comprises high temperature oxidation, vitriol high temperature corrosion, sulphur corrosion, muriate high temperature corrosion etc.High-temperature high-pressure boiler " four pipes " the high temperature corrosion phenomenon of (being water wall tube, superheater tube, reheating pipe, economizer tube) and a series of serious consequences such as such as booster of bringing are therefrom power industry difficult problems anxious to be resolved always.
Adopting hot-spraying techniques to prevent boi1er tube is the effective means in a kind of prolonged boiler normal operation cycle.At home, the main sprayed protection technology adopting has at present: aluminium-plated protection, because the fusing point low of aluminium is 660.4 ℃, under low temperature environment, effect is pretty good, its creep strength is low, wear no resistance, the component such as high-temperature high-pressure boiler " four pipe " often need to bear certain abrasive action simultaneously, and these factors make the provide protection after aluminium-plated undesirable; Surfacing Ni-W alloy coat, although spray-welding coating combination is good, abrasion and corrosion is slight, and its technique weak point is that remelting temperature is too high, causes pipe deformation, and big area is used and is had any problem; Domestic also have the aluminising of employing, chromising to protect, but hot-dip process is generally only applicable to the coating of single-element composition, and the desired higher working temperature of the method (generally between 750-1100 ℃) all can produce certain impact for organize results and the performance of body material, and protection effect is not good enough.With abroad comparing, China starts late in the work aspect boi1er tube protection, lacks the bad working environments that is applicable to boiler running and the coated material simultaneously with good resistance to high temperature corrosion performance.
Publication number is that the application for a patent for invention of CN101260487A discloses a kind of titanium-containing high-chromium-nickel alloy, its composition consists of (weight percentage): 15%≤Cr≤25%, 1%≤Ti≤5%, 1%≤Si≤6%, 0 < C%≤0.20%, 20%≤Ni≤55%, 0.5%≤Re≤6%, 0 < Al≤6%, 0 < S≤0.035%, 0 < P≤0.035%, 0 < Mn≤0.2%, surplus is Fe.Although this patent has obtained certain improvement effect, its chrome content is higher, easily causes the bonding properties of its coating bad, after using after a while, easily peels off.
Summary of the invention
For the deficiencies in the prior art, one of object of the present invention is to provide a kind of boiler tubing barrier material, and this coated material has excellent anti-oxidant, sulfuration, nitrogenize and hydrogenation property, and strong with basal body binding force, the feature of long service life.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of boiler tubing barrier material, described coated material is comprised of following component by weight percentage: Cr:12%-14%, Mn:0.4%-0.6%, Ti:2%-3%, Al:3%-5%, Si:2%-4%, Nb:1%-2%, Fe:8%-12%, Co:1%-3%, Mo:3%-5%, S≤0.025%, P≤0.035%, surplus is Ni.
Preferably, described coated material is comprised of following component by weight percentage: Cr:12.5%-13.5%, Mn:0.45%-0.55%, Ti:2.3%-2.7%, Al:3.5%-4.5%, Si:2.5%-3.5%, Nb:1.3%-1.7%, Fe:9%-11%, Co:1.5%-2.5%, Mo:3.5%-4.5%, S≤0.025%, P≤0.035%, surplus is Ni.
Most preferably, described coated material is comprised of following component by weight percentage: Cr:13%, Mn:0.5%, Ti:2.5%, Al:4%, Si:3%, Nb:1.5%, Fe:10%, Co:2%, Mo:4%, S≤0.025%, P≤0.035%, surplus is Ni.
The present invention has following beneficial effect:
1) than prior art, reduced the content of Cr, the toughness of coating is increased, increase with the bonding force of matrix; But still assurance has the content of the Cr of enough erosion resistances.
2) Ti adding in coated material and Nb refinement the crystal grain of coated material, and in use, can form on surface one deck densification, in conjunction with firmly, the sull that can also automatically heal when damaged.
3) Cr, the Si that in coated material, add, Al can form intact densification and have with oxygen the oxide film (Cr of protectiveness when high temperature 2o 3, SiO 2, Al 2o 3), matrix is shielded;
4) in coated material, add appropriate Co and Mo, the resistance to elevated temperatures of material is improved.
5) optimization design the ratio of above-mentioned each component, make its various elements reach synergistic action technique effect, make coated material there is strong resistance to high temperature oxidation, high temperature resistance SO 2, H 2s, Na 2sO 4/ K 2sO 4deng the performance of dielectric corrosion.
Embodiment
Embodiment mono-
A kind of boiler tubing barrier material, described coated material is comprised of following component by weight percentage: Cr:12%, Mn:0.6%, Ti:2%, Al:5%, Si:2%, Nb:2%, Fe:8%, Co:3%, Mo:3%, S≤0.025%, P≤0.035%, surplus is Ni.
Embodiment bis-
A kind of boiler tubing barrier material, described coated material is comprised of following component by weight percentage: Cr:14%, Mn:0.4%, Ti:3%, Al:3%, Si:4%, Nb:1%, Fe:12%, Co:1%, Mo:5%, S≤0.025%, P≤0.035%, surplus is Ni.
Embodiment tri-
A kind of boiler tubing barrier material, described coated material is comprised of following component by weight percentage: Cr:12.5%, Mn:0.55%, Ti:2.3%, Al:4.5%, Si:2.5%, Nb:1.7%, Fe:9%, Co:2.5%, Mo:3.5%, S≤0.025%, P≤0.035%, surplus is Ni.
Embodiment tetra-
A kind of boiler tubing barrier material, described coated material is comprised of following component by weight percentage: Cr:13.5%, Mn:0.45%, Ti:2.7%, Al:3.5%, Si:3.5%, Nb:1.3%, Fe:11%, Co:1.5%, Mo:4.5%, S≤0.025%, P≤0.035%, surplus is Ni.
Embodiment five
A kind of boiler tubing barrier material, described coated material is comprised of following component by weight percentage: Cr:13%, Mn:0.5%, Ti:2.5%, Al:4%, Si:3%, Nb:1.5%, Fe:10%, Co:2%, Mo:4%, S≤0.025%, P≤0.035%, surplus is Ni.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, and the selections of the equivalence replacement to the each raw material of product of the present invention and the interpolation of ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.

Claims (3)

1. a boiler tubing barrier material, is characterized in that, described coated material is comprised of following component by weight percentage: Cr:12%-14%, Mn:0.4%-0.6%, Ti:2%-3%, Al:3%-5%, Si:2%-4%, Nb:1%-2%, Fe:8%-12%, Co:1%-3%, Mo:3%-5%, S≤0.025%, P≤0.035%, surplus is Ni.
2. a kind of boiler tubing barrier material as claimed in claim 1, is characterized in that, described coated material is comprised of following component by weight percentage: Cr:12.5%-13.5%, Mn:0.45%-0.55%, Ti:2.3%-2.7%, Al:3.5%-4.5%, Si:2.5%-3.5%, Nb:1.3%-1.7%, Fe:9%-11%, Co:1.5%-2.5%, Mo:3.5%-4.5%, S≤0.025%, P≤0.035%, surplus is Ni.
3. a kind of boiler tubing barrier material as claimed in claim 1 or 2, is characterized in that, described coated material is comprised of following component by weight percentage: Cr:13%, Mn:0.5%, Ti:2.5%, Al:4%, Si:3%, Nb:1.5%, Fe:10%, Co:2%, Mo:4%, S≤0.025%, P≤0.035%, surplus is Ni.
CN201210305846.7A 2012-08-24 2012-08-24 Protective coating material for boiler pipeline Active CN102828070B (en)

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Application Number Priority Date Filing Date Title
CN201210305846.7A CN102828070B (en) 2012-08-24 2012-08-24 Protective coating material for boiler pipeline

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CN102828070B true CN102828070B (en) 2014-05-07

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Publication number Priority date Publication date Assignee Title
CN108220857A (en) * 2018-01-04 2018-06-29 西安热工研究院有限公司 The anti-chlorine corrosion double-layer structure alloy coat of waste incinerator heating surface and preparation method
CN110284094B (en) * 2019-07-04 2020-10-02 华北电力大学 Preparation of high-temperature anticorrosive coating on boiler water-cooled wall and heat treatment synergistic enhancement technology of pipe matrix
CN115233136B (en) * 2022-07-27 2024-06-18 西安热工研究院有限公司 Anti-chlorine corrosion wear-resistant coating material, composite material and preparation method thereof

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CN1037699C (en) * 1995-05-09 1998-03-11 宝山钢铁(集团)公司 Stainless corrosion-resistant conductive rolle rsleeve and making method thereof
JP4280898B2 (en) * 2002-12-18 2009-06-17 住友金属工業株式会社 Metal dusting metal material with excellent high temperature strength
DE10302989B4 (en) * 2003-01-25 2005-03-03 Schmidt + Clemens Gmbh & Co. Kg Use of a heat and corrosion resistant nickel-chromium steel alloy
SE528807C2 (en) * 2004-12-23 2007-02-20 Siemens Ag Component of a superalloy containing palladium for use in a high temperature environment and use of palladium for resistance to hydrogen embrittlement
JP4827047B2 (en) * 2005-03-22 2011-11-30 国立大学法人九州工業大学 Steel structure with corrosion resistance, wear resistance and heat crack resistance
EA022538B1 (en) * 2008-12-01 2016-01-29 Сэн-Гобэн Коутинг Солюшн Coating for a device for shaping glass material
CN101798669B (en) * 2009-02-06 2011-07-20 上海宝钢设备检修有限公司 Method for thermally spraying protective coating on surface of copper plate of continuous casting crystallizer

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Effective date: 20140410

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Address after: Yinzhou District Lianfeng road 315175 Zhejiang city of Ningbo Province, No. 889

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Applicant before: Zhu Xiaoying

CP02 Change in the address of a patent holder
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Address after: 889 Lianfeng Middle Road, Gaoqiao Town, Haishu District, Ningbo City, Zhejiang Province

Patentee after: NINGBO SUNLIGHT MOTOR PARTS Co.,Ltd.

Address before: 315175 889 Luen Fung Road, Yinzhou District, Ningbo, Zhejiang

Patentee before: NINGBO SUNLIGHT MOTOR PARTS Co.,Ltd.